NEET MCQs Practice | Chapter 7 Structural Organisation in Animals| Biology Class 11
Here You Get So Many MCQs Questions Based On NEET Of Class 11 Biology.If You Want To Read Our Quality Notes Of Chapter 7, Structural Organisation in Animals, Click Here 🥰1. In single-celled organisms, which of the following functions is performed by the same cell?
a) Digestion only
b) Respiration only
c) Reproduction only
d) All of the above
Correct Answer: d
2. In multicellular organisms, different groups of cells perform specific functions. Such a group of similar cells is called a:
a) Tissue
b) Organ
c) Organ system
d) Cell membrane
Correct Answer: a
3. Even simple multicellular animals like Hydra have:
a) Only one type of cell
b) No organized structure
c) Different types of cells
d) Only plant-like cells
Correct Answer: c
4. In humans, cells are organized to form:
a) Only tissues
b) Tissues, organs, and organ systems
c) Only organs
d) Only bones and muscles
Correct Answer: b
5. The number of basic tissue types found in all complex animals is:
a) Two
b) Three
c) Four
d) Five
Correct Answer: c
6. Organs like stomach, lungs, heart, and kidneys are formed by:
a) Random cells
b) Blood and bones only
c) Tissues arranged in a particular way
d) Unorganized cell groups
Correct Answer: c
7. When two or more organs work together to perform a specific function, they form a/an:
a) Tissue
b) Cell system
c) Organ system
d) Organ group
Correct Answer: c
8. The organization of the human body from smallest to largest level is:
a) Organ → Tissue → Cell → Organ system
b) Cell → Tissue → Organ → Organ system
c) Tissue → Cell → Organ system → Organ
d) Cell → Organ system → Organ → Tissue
Correct Answer: b
9. The concept of “division of labour” in multicellular organisms means:
a) Only brain controls all activities
b) Every organ does the same work
c) Different organs share different functions
d) Only tissues work independently
Correct Answer: c
10. The coordination among cells, tissues, and organs in multicellular animals helps the body to:
a) Reduce size
b) Increase cell number only
c) Survive efficiently
d) Stop reproduction
Correct Answer: c
11. In multicellular organisms, organs are formed by the combination of:
a) Cells only
b) Basic tissues
c) Organ systems
d) Organs of similar function
Correct Answer: b
12. The organization of body parts from simple to complex is:
a) Cell → Organ → Tissue → Organ system
b) Tissue → Cell → Organ system → Organ
c) Cell → Tissue → Organ → Organ system
d) Organ system → Organ → Tissue → Cell
Correct Answer: c
13. The main advantage of body organization in multicellular organisms is:
a) Faster growth of cells
b) Efficient and coordinated working of cells
c) Reduced number of tissues
d) Simpler body structure
Correct Answer: b
14. Which of the following correctly represents the tissues found in the human heart?
a) Only muscular tissue
b) Only epithelial and connective tissues
c) All four main types of tissues
d) Only connective tissue
Correct Answer: c
15. The four basic types of tissues present in the human body are:
a) Muscular, skeletal, nervous, and connective
b) Epithelial, connective, muscular, and nervous
c) Connective, circulatory, glandular, and epithelial
d) Muscular, glandular, epithelial, and skeletal
Correct Answer: b
16. As we move from simple to complex animals, there is a clear pattern of:
a) Degeneration
b) Evolutionary trend
c) Structural simplification
d) Random changes
Correct Answer: b
17. The branch of biology that deals with the form or external appearance of an organism is called:
a) Physiology
b) Anatomy
c) Morphology
d) Cytology
Correct Answer: c
18. In animals, morphology mainly refers to:
a) Internal organs and their structure
b) External appearance of organs or body parts
c) Chemical composition of cells
d) Process of reproduction
Correct Answer: b
19. The study of internal structure and organs of animals is called:
a) Morphology
b) Cytology
c) Anatomy
d) Embryology
Correct Answer: c
20. In this chapter, the organism chosen for the study of morphology and anatomy is:
a) Earthworm
b) Cockroach
c) Frog
d) Fish
Correct Answer: c
21. The frog is a member of which group of animals?
a) Invertebrates
b) Vertebrates
c) Arthropods
d) Protozoans
Correct Answer: b
22. In plants or microbes, the term morphology usually refers to:
a) External features
b) Internal organs
c) Body movements
d) Reproductive parts only
Correct Answer: a
23. Which of the following is not a type of basic tissue in animals?
a) Connective tissue
b) Muscular tissue
c) Glandular tissue
d) Nervous tissue
Correct Answer: c
24. The study of the frog’s internal organs comes under which branch of study?
a) Morphology
b) Anatomy
c) Physiology
d) Taxonomy
Correct Answer: b
25. Which feature shows an evolutionary trend among animals?
a) Increase in body temperature
b) Increase in structural and functional complexity
c) Decrease in organ number
d) Simplification of tissues
Correct Answer: b
26. Frogs can live both on land and in freshwater. Hence, they are placed in which class?
a) Pisces
b) Reptilia
c) Amphibia
d) Mammalia
Correct Answer: c
27. Frogs belong to which phylum?
a) Arthropoda
b) Chordata
c) Mollusca
d) Annelida
Correct Answer: b
28. The most common species of frog found in India is:
a) Rana hexadactyla
b) Rana tigrina
c) Rana temporaria
d) Bufo melanostictus
Correct Answer: b
29. Frogs do not maintain a constant body temperature. Such animals are called:
a) Homeothermic
b) Poikilothermic
c) Isothermic
d) Thermostatic
Correct Answer: b
30. Cold-blooded animals are those:
a) Whose body temperature remains constant
b) Which can generate their own body heat
c) Whose body temperature varies with environment
d) Which live only in cold regions
Correct Answer: c
31. The ability of frogs to change their body colour to blend with the environment is called:
a) Photosynthesis
b) Mimicry
c) Camouflage
d) Metamorphosis
Correct Answer: c
32. The main purpose of camouflage in frogs is to:
a) Control body temperature
b) Protect from enemies
c) Attract mates
d) Help in swimming
Correct Answer: b
33. The term “mimicry” refers to:
a) Production of sound by frogs
b) Change in body colour for protection
c) Laying eggs in water
d) Sleeping during winter
Correct Answer: b
34. During which season do frogs go into aestivation?
a) Summer
b) Winter
c) Rainy season
d) Spring
Correct Answer: a
35. Aestivation in frogs helps them to survive:
a) During food shortage
b) During extreme heat
c) During rainfall
d) During reproduction
Correct Answer: b
36. When frogs take shelter in deep burrows during winter, the process is called:
a) Hibernation
b) Aestivation
c) Migration
d) Metamorphosis
Correct Answer: a
37. Hibernation in frogs occurs to protect them from:
a) Excessive heat
b) Excessive cold
c) Predators
d) Shortage of oxygen
Correct Answer: b
38. The ability of frogs to survive in both aquatic and terrestrial habitats shows that they are:
a) Ectothermic animals
b) Amphibious animals
c) Endothermic animals
d) Arboreal animals
Correct Answer: b
39. The term poikilothermic refers to animals that:
a) Maintain a stable internal temperature
b) Have a fixed body colour
c) Vary body temperature with surroundings
d) Can survive only in hot environments
Correct Answer: c
40. Which of the following statements is true for frogs?
a) They are warm-blooded vertebrates
b) They live only in water
c) They undergo aestivation and hibernation
d) They have constant body temperature
Correct Answer: c
41. Frog’s skin feels smooth and slippery because it is covered with:
a) Sweat
b) Oil
c) Mucus
d) Water
Correct Answer: c
42. The moist skin of frogs is important because it helps in:
a) Excretion
b) Breathing (respiration)
c) Reproduction
d) Digestion
Correct Answer: b
43. The dorsal side of a frog is generally:
a) Pale yellow with dark spots
b) Olive green with dark irregular spots
c) Brown with stripes
d) Blue-green and smooth
Correct Answer: b
44. The ventral side (belly) of a frog is:
a) Dark brown
b) Olive green
c) Pale yellow
d) Bright red
Correct Answer: c
45. Frogs do not drink water through their mouths; instead, they absorb it through:
a) Nostrils
b) Eyes
c) Skin
d) Mouth cavity
Correct Answer: c
46. The body of a frog is divided into:
a) Head, neck, and trunk
b) Head and trunk
c) Head, trunk, and tail
d) Trunk and tail
Correct Answer: b
47. Frogs do not have which of the following body parts?
a) Head
b) Neck
c) Trunk
d) Eyes
Correct Answer: b
48. The special membrane that protects a frog’s eyes underwater is called:
a) Tympanum
b) Cornea
c) Nictitating membrane
d) Retina
Correct Answer: c
49. The tympanum in frogs functions as the:
a) Nose
b) Ear
c) Eye membrane
d) Voice box
Correct Answer: b
50. The limbs that help frogs in swimming, walking, jumping, and digging are:
a) Only hind limbs
b) Only forelimbs
c) Both forelimbs and hind limbs
d) Only webbed feet
Correct Answer: c
51. The hind limbs of frogs are:
a) Smaller than forelimbs
b) Equal to forelimbs
c) Larger and more muscular than forelimbs
d) Absent
Correct Answer: c
52. The number of toes in the hind limbs of frogs is:
a) Four
b) Five
c) Six
d) Three
Correct Answer: b
53. The number of fingers in the forelimbs of frogs is:
a) Three
b) Four
c) Five
d) Six
Correct Answer: b
54. The toes of frogs are webbed to help in:
a) Jumping
b) Swimming
c) Breathing
d) Grasping
Correct Answer: b
55. Frogs show sexual dimorphism. This means:
a) They reproduce asexually
b) Males and females look different
c) They change color during mating
d) They have both sexes in one body
Correct Answer: b
56. Which of the following structures is found only in male frogs?
a) Nictitating membrane
b) Vocal sacs and copulatory pads
c) Tympanum
d) Webbed toes
Correct Answer: b
57. The copulatory pad in male frogs is located on:
a) Hind limb toes
b) First finger of forelimb
c) Tongue tip
d) Skin surface
Correct Answer: b
58. The main function of vocal sacs in male frogs is:
a) Breathing under water
b) Producing sound
c) Hearing sound
d) Absorbing water
Correct Answer: b
59. The ability of frogs to absorb water through their skin instead of drinking is called:
a) Osmotic absorption
b) Cutaneous absorption
c) Pulmonary respiration
d) Buccal absorption
Correct Answer: b
60. The nictitating membrane of frogs helps mainly in:
a) Breathing
b) Hearing
c) Protecting eyes under water
d) Swallowing food
Correct Answer: c
61. The body cavity of a frog that contains all major organ systems is called the:
a) Cloaca
b) Coelom
c) Peritoneum
d) Thorax
Correct Answer: b
62. Which of the following organ systems are present in the frog’s body cavity?
a) Only digestive and respiratory
b) Only circulatory and nervous
c) All major systems like digestive, circulatory, nervous, excretory, and reproductive
d) Only reproductive and excretory
Correct Answer: c
63. The digestive system of a frog consists of:
a) Only alimentary canal
b) Alimentary canal and digestive glands
c) Digestive glands only
d) Mouth and intestine only
Correct Answer: b
64. Frogs are:
a) Herbivores
b) Carnivores
c) Omnivores
d) Insectivores only
Correct Answer: b
65. Frogs have a short alimentary canal because:
a) They are herbivorous
b) They have slow digestion
c) Their food is easily digestible
d) They store food for long periods
Correct Answer: c
66. The alimentary canal in a frog starts from:
a) Cloaca
b) Stomach
c) Mouth
d) Intestine
Correct Answer: c
67. The correct sequence of parts in the frog’s alimentary canal is:
a) Mouth → Pharynx → Buccal cavity → Oesophagus → Stomach → Intestine → Rectum → Cloaca
b) Mouth → Buccal cavity → Pharynx → Oesophagus → Stomach → Intestine → Rectum → Cloaca
c) Mouth → Oesophagus → Pharynx → Stomach → Cloaca → Rectum
d) Mouth → Pharynx → Stomach → Intestine → Cloaca
Correct Answer: b
68. The liver of frog produces:
a) Pancreatic juice
b) Gastric juice
c) Bile
d) Saliva
Correct Answer: c
69. Bile is stored in the:
a) Pancreas
b) Cloaca
c) Gall bladder
d) Stomach
Correct Answer: c
70. The pancreas of frog secretes:
a) Gastric juice
b) Bile
c) Pancreatic juice with digestive enzymes
d) Mucus
Correct Answer: c
71. Frogs use which organ to catch food?
a) Jaws
b) Bilobed tongue
c) Buccal cavity
d) Teeth
Correct Answer: b
72. Digestion in frogs begins in the:
a) Mouth
b) Stomach
c) Intestine
d) Cloaca
Correct Answer: b
73. In the frog’s stomach, food is acted upon by:
a) Bile and saliva
b) Hydrochloric acid and gastric juices
c) Enzymes from pancreas
d) Water and mucus
Correct Answer: b
74. The semi-digested food formed in the frog’s stomach is called:
a) Bolus
b) Chyme
c) Feces
d) Plasma
Correct Answer: b
75. The first part of the small intestine in a frog is the:
a) Jejunum
b) Ileum
c) Duodenum
d) Colon
Correct Answer: c
76. Bile helps mainly in the digestion of:
a) Proteins
b) Fats
c) Carbohydrates
d) Vitamins
Correct Answer: b
77. Pancreatic juice helps in digestion of:
a) Only fats
b) Only carbohydrates
c) Carbohydrates and proteins
d) Only vitamins
Correct Answer: c
78. Final digestion and absorption in frogs occur in the:
a) Stomach
b) Duodenum
c) Intestine
d) Cloaca
Correct Answer: c
79. The finger-like projections in the frog’s intestine that absorb nutrients are called:
a) Cilia
b) Microtubules
c) Villi and microvilli
d) Nodules
Correct Answer: c
80. Undigested food in frogs is expelled out through the:
a) Anus
b) Cloaca
c) Rectum
d) Mouth
Correct Answer: b
81. Frogs breathe both on land and in water, so they are:
a) Only aquatic animals
b) Only terrestrial animals
c) Amphibious animals
d) Aerial animals
Correct Answer: c
82. In water, frogs breathe mainly through:
a) Lungs
b) Buccal cavity
c) Skin
d) Gills
Correct Answer: c
83. The process of respiration through the skin is called:
a) Pulmonary respiration
b) Buccal respiration
c) Cutaneous respiration
d) Cellular respiration
Correct Answer: c
84. On land, frogs use which of the following for breathing?
a) Skin, buccal cavity, and lungs
b) Skin only
c) Lungs only
d) Buccal cavity only
Correct Answer: a
85. Lung-based respiration in frogs is called:
a) Cutaneous respiration
b) Pulmonary respiration
c) Buccopharyngeal respiration
d) Tracheal respiration
Correct Answer: b
86. The lungs of frogs are:
a) Spongy and elongated pink sacs
b) Flat and leaf-like structures
c) Small and colorless
d) Divided into multiple lobes
Correct Answer: a
87. During aestivation and hibernation, frogs continue gaseous exchange through:
a) Lungs
b) Mouth
c) Skin
d) Gills
Correct Answer: c
88. The frog’s circulatory system is:
a) Open
b) Closed
c) Partially open
d) Absent
Correct Answer: b
89. The circulatory system of frogs includes:
a) Heart and lymph
b) Heart, blood vessels, and blood
c) Only heart and arteries
d) Heart and liver
Correct Answer: b
90. The lymphatic system of frogs includes:
a) Lymph, lymph vessels, and lymph nodes
b) Blood and blood vessels
c) Heart and plasma
d) RBCs and WBCs
Correct Answer: a
91. The frog’s heart has how many chambers?
a) Two
b) Three
c) Four
d) Five
Correct Answer: b
92. The frog’s heart consists of:
a) Two atria and one ventricle
b) One atrium and two ventricles
c) Two atria and two ventricles
d) One atrium and one ventricle
Correct Answer: a
93. The heart of the frog is protected by a covering called:
a) Peritoneum
b) Pleura
c) Pericardium
d) Perimysium
Correct Answer: c
94. The sinus venosus in frogs:
a) Pumps blood to lungs
b) Joins the right atrium and collects blood from major veins
c) Receives oxygenated blood from lungs
d) Sends blood to the brain
Correct Answer: b
95. The sac-like structure connected to the ventricle on the ventral side of the frog’s heart is:
a) Conus arteriosus
b) Sinus venosus
c) Pulmonary artery
d) Aortic arch
Correct Answer: a
96. Arteries in the frog’s body:
a) Carry blood to the heart
b) Carry blood from the heart to body parts
c) Carry deoxygenated blood only
d) Carry lymph
Correct Answer: b
97. Veins in frogs perform which function?
a) Carry blood from heart to organs
b) Carry blood from organs back to heart
c) Carry lymph
d) Carry air
Correct Answer: b
98. The hepatic portal system connects which two organs?
a) Heart and lungs
b) Liver and intestine
c) Kidney and heart
d) Brain and spinal cord
Correct Answer: b
99. The renal portal system in frogs connects:
a) Lungs and liver
b) Intestine and heart
c) Kidneys and lower body parts
d) Brain and eyes
Correct Answer: c
100. The frog’s blood consists of:
a) Only plasma
b) Plasma and blood cells
c) Only red blood cells
d) Lymph only
Correct Answer: b
101. The red blood cells (RBCs) of frogs contain:
a) Chlorophyll
b) Haemoglobin
c) Enzymes only
d) Fat molecules
Correct Answer: b
102. Which of the following is absent in lymph?
a) RBCs and some proteins
b) WBCs
c) Plasma
d) Water
Correct Answer: a
103. Lymph differs from blood mainly because it:
a) Contains RBCs
b) Lacks RBCs and is colorless
c) Contains more hemoglobin
d) Contains bile pigments
Correct Answer: b
104. The main function of the lymphatic system in frogs is to:
a) Transport gases
b) Carry digested food
c) Return tissue fluid to blood circulation
d) Control heartbeat
Correct Answer: c
104. The excretory system of frogs mainly removes which type of waste?
a) Carbon dioxide
b) Nitrogenous wastes ✅
c) Excess salts
d) Water
105. The excretory system of frog includes:
a) Kidneys, lungs, and urinary bladder
b) Kidneys, ureters, urinary bladder, and cloaca ✅
c) Kidneys, gall bladder, and cloaca
d) Liver, ureters, and rectum
106. The kidneys of frogs are located:
a) In the head region
b) Along the vertebral column ✅
c) Near the lungs
d) Below the heart
107. Functional unit of a frog’s kidney is:
a) Neuron
b) Nephron ✅
c) Neurilemma
d) Nucleus
108. In male frogs, ureters act as:
a) Urinogenital ducts ✅
b) Respiratory ducts
c) Separate excretory ducts
d) Only urinary ducts
109. In female frogs, the ureters and oviducts:
a) Open into different openings
b) Open separately into the cloaca ✅
c) Merge before opening
d) Open into the bladder
110. Frogs excrete urea, hence they are called:
a) Ammonotelic
b) Uricotelic
c) Ureotelic ✅
d) Thermophilic
111. The urinary bladder in frogs is:
a) Thick-walled
b) Thin-walled ✅
c) Absent
d) Muscular and rigid
112. Blood carries nitrogenous wastes to the:
a) Liver
b) Kidneys ✅
c) Lungs
d) Heart
113. The endocrine glands help in:
a) Physical coordination
b) Chemical coordination ✅
c) Blood circulation
d) Food digestion
114. Which of the following is not an endocrine gland in frogs?
a) Pituitary gland
b) Pineal body
c) Pancreatic islets
d) Liver ✅
115. Which gland is known as the “master gland” in frogs?
a) Thyroid gland
b) Pituitary gland ✅
c) Adrenal gland
d) Parathyroid gland
116. The nervous system in frogs consists of:
a) Central and peripheral systems only
b) Central, peripheral, and autonomic systems ✅
c) Central and autonomic systems only
d) Peripheral and skeletal systems
117. The central nervous system of frog includes:
a) Brain and spinal cord ✅
b) Brain and cranial nerves
c) Brain and vertebral column
d) Spinal nerves and spinal cord
118. Number of cranial nerve pairs in frogs is:
a) 8 pairs
b) 10 pairs ✅
c) 12 pairs
d) 14 pairs
119. The frog brain is divided into:
a) Two parts
b) Three parts ✅
c) Four parts
d) Five parts
120. The three main parts of frog’s brain are:
a) Cerebrum, cerebellum, medulla
b) Forebrain, midbrain, hindbrain ✅
c) Optic lobes, olfactory lobes, spinal cord
d) Cerebrum, medulla, spinal cord
121. The forebrain of frog consists of:
a) Optic lobes
b) Olfactory lobes, cerebral hemispheres, and diencephalon ✅
c) Cerebellum and medulla
d) Only olfactory lobes
122. The midbrain of frog has:
a) Optic lobes ✅
b) Cerebellum
c) Olfactory lobes
d) Diencephalon
123. The hindbrain of frog includes:
a) Cerebrum and cerebellum
b) Cerebellum and medulla oblongata ✅
c) Olfactory lobes
d) Optic lobes and diencephalon
124. The spinal cord in frog is protected by:
a) Skull
b) Vertebral column ✅
c) Cartilaginous plates
d) Nictitating membrane
125. Frogs possess different sense organs for:
a) Touch, taste, smell, vision, and hearing ✅
b) Taste, smell, and digestion only
c) Vision and excretion
d) Hearing and respiration only
126. The eyes of frogs are:
a) Cylindrical and compound
b) Spherical and simple in structure ✅
c) Flat and compound
d) Cylindrical and complex
127. In frogs, the external ear is:
a) Highly developed
b) Absent ✅
c) Covered with skin folds
d) Present only in females
128. The tympanum in frogs helps in:
a) Digestion
b) Respiration
c) Hearing and balance ✅
d) Reproduction
129. The male reproductive organs in frogs include:
a) A pair of testes and oviducts
b) A pair of yellowish, oval testes ✅
c) One testis and one kidney
d) A single testis and cloaca
130. The testes in male frogs are attached to:
a) The lower kidneys
b) The upper kidneys ✅
c) The liver
d) The bladder
131. The sperm in frogs passes through:
a) Vas deferens → ureter → cloaca
b) Vasa efferentia → Bidder’s canal → urinogenital duct → cloaca ✅
c) Nephrons → kidneys → cloaca
d) Seminiferous tubules → bladder → cloaca
132. Cloaca in frogs serves as a common passage for:
a) Urine only
b) Faeces only
c) Urine, faeces, and sperm ✅
d) Only reproductive materials
133. The ovaries in female frogs are:
a) Attached to the kidneys
b) Not connected to the kidneys ✅
c) Present inside the liver
d) Fused together
134. The oviducts of frogs open:
a) Into the kidneys
b) Into the bladder
c) Separately into the cloaca ✅
d) Into the stomach
135. A mature female frog can lay approximately:
a) 100–200 eggs
b) 500–1000 eggs
c) 2500–3000 eggs ✅
d) 5000–6000 eggs
136. Fertilization in frogs is:
a) Internal
b) External ✅
c) Asexual
d) Parthenogenetic
137. Development of frogs includes a larval stage known as:
a) Embryo
b) Caterpillar
c) Tadpole ✅
d) Maggot
138. Transformation of a tadpole into an adult frog is called:
a) Regeneration
b) Metamorphosis ✅
c) Fertilization
d) Differentiation
139. Frogs help farmers mainly by:
a) Eating crops
b) Eating insects ✅
c) Eating small plants
d) Spreading seeds
140. Frogs maintain ecological balance by:
a) Living both on land and water
b) Acting as an important link in the food chain and food web ✅
c) Storing water
d) Producing oxygen
141. In some countries, people eat which part of frogs as food?
a) Head
b) Legs ✅
c) Skin
d) Tail
142. In multicellular animals, cells, tissues, organs, and organ systems work together to ensure:
a) Reproduction
b) Growth only
c) Survival of the whole body ✅
d) Food production
143. The coordinated sharing of work among body parts in multicellular animals is called:
a) Evolution
b) Division of labour ✅
c) Circulation
d) Differentiation
144. A tissue is defined as:
a) A group of organs performing the same function
b) A group of similar cells with intercellular substances performing specific functions ✅
c) A single type of cell performing all functions
d) A combination of systems in the body
145. Epithelial tissues are mainly responsible for:
a) Conduction of impulses
b) Movement of body
c) Lining body surfaces and cavities ✅
d) Transport of gases
146. The cells in epithelial tissue are joined together by:
a) Junctions ✅
b) Cytoplasm
c) Ligaments
d) Capillaries
147. The common frog found in India is:
a) Rana hexadactyla
b) Rana tigrina ✅
c) Rana temporaria
d) Rana esculenta
148. The skin of a frog contains mucous glands that help in:
a) Digestion
b) Respiration both in water and on land ✅
c) Excretion
d) Vision
149. The frog’s body is divided into:
a) Head and neck
b) Head and trunk ✅
c) Head, neck, and tail
d) Head, trunk, and abdomen
150. The tongue of a frog is:
a) Rough and immovable
b) Bilobed at the tip and muscular ✅
c) Sticky but not muscular
d) Short and pointed
151. The digestive system of frog includes:
a) Mouth, oesophagus, intestine, and rectum ✅
b) Mouth, trachea, lungs, and anus
c) Mouth, liver, heart, and cloaca
d) Buccal cavity, lungs, and rectum
152. All parts of the frog’s alimentary canal open into:
a) Bladder
b) Cloaca ✅
c) Intestine
d) Rectum
153. The digestive glands in frogs are:
a) Liver and pancreas ✅
b) Kidney and liver
c) Pancreas and bladder
d) Gall bladder and kidney
154. Frogs breathe through:
a) Only lungs
b) Only skin
c) Skin in water and lungs on land ✅
d) Mouth only
155. Frog’s circulatory system is:
a) Open with single circulation
b) Closed with single circulation ✅
c) Closed with double circulation
d) Open with double circulation
156. The red blood cells (RBCs) of frogs are:
a) Without nuclei
b) Nucleated ✅
c) Non-living
d) White in color
157. The frog’s nervous system is divided into:
a) Central, peripheral, and autonomic systems ✅
b) Central and somatic systems
c) Peripheral and skeletal systems
d) Brain and muscular systems
158. The excretory and reproductive systems in frogs share:
a) Cloacal glands
b) Urinogenital ducts ✅
c) Pancreatic ducts
d) Nephrons
159. Male frogs possess:
a) A pair of kidneys and one ovary
b) A pair of testes ✅
c) A pair of ovaries
d) One testis and one kidney
160. Female frogs have:
a) A single ovary
b) Two testes
c) A pair of ovaries ✅
d) Two copulatory pads
161. A female frog can lay approximately:
a) 500–1000 eggs
b) 2500–3000 eggs ✅
c) 5000–6000 eggs
d) 100–200 eggs
162. Fertilization and early development in frogs occur:
a) Internally
b) Externally in water ✅
c) Inside the female’s body
d) In moist soil
163. The larval stage of a frog is called:
a) Pupa
b) Tadpole ✅
c) Nymph
d) Embryo
164. Conversion of tadpole into adult frog occurs through:
a) Fertilization
b) Metamorphosis ✅
c) Regeneration
d) Germination
Q.165. A group of similar cells that perform a common function is known as:
A. Organ
B. Organ system
C. Tissue
D. Organism
✅ Ans: C. Tissue
Q.166. Which of the following tissues lines the body cavities and ducts?
A. Connective tissue
B. Muscular tissue
C. Epithelial tissue
D. Nervous tissue
✅ Ans: C. Epithelial tissue
Q.167. Which of the following is not a characteristic of epithelial tissue?
A. Cells are tightly packed
B. Cells have intercellular spaces filled with matrix
C. Cells rest on a basement membrane
D. Forms lining of organs and glands
✅ Ans: B. Cells have intercellular spaces filled with matrix
Q.168. The free surface of epithelial tissue faces:
A. Only body cavity
B. Only body fluid
C. Body fluid or external environment
D. Bone tissue
✅ Ans: C. Body fluid or external environment
Q.169. Which junction provides mechanical strength to epithelial cells?
A. Gap junction
B. Tight junction
C. Adhering junction
D. Plasmodesmata
✅ Ans: C. Adhering junction
Q.170. The Indian bullfrog is scientifically known as:
A. Rana tigrina
B. Rana hexadactyla
C. Bufo melanostictus
D. Rana temporaria
✅ Ans: A. Rana tigrina
Q.171. The skin of frog contains:
A. Sweat glands
B. Mucous glands
C. Oil glands
D. Sebaceous glands
✅ Ans: B. Mucous glands
Q.172. The mucous glands in frog’s skin help in:
A. Protection only
B. Respiration and protection
C. Reproduction
D. Excretion
✅ Ans: B. Respiration and protection
Q.173. The body of frog is divided into:
A. Head, neck, and trunk
B. Head and trunk
C. Head, trunk, and tail
D. Head, thorax, and abdomen
✅ Ans: B. Head and trunk
Q.174. The tongue of frog is:
A. Muscular, sticky, bifid
B. Muscular, non-sticky, bifid
C. Non-muscular, sticky
D. Non-muscular, non-sticky
✅ Ans: A. Muscular, sticky, bifid
Q.175. In frog, the bilobed tongue helps in:
A. Tasting food
B. Catching prey
C. Swallowing
D. Digestion
✅ Ans: B. Catching prey
Q.176. The digestive glands in frog include:
A. Salivary glands and liver
B. Pancreas and salivary glands
C. Liver and pancreas
D. Pancreas only
✅ Ans: C. Liver and pancreas
Q.177. Cloaca in frog serves as:
A. Only excretory organ
B. Only reproductive organ
C. Common opening for digestive, excretory and reproductive tracts
D. None
✅ Ans: C. Common opening for digestive, excretory and reproductive tracts
Q.178. Frog respires through lungs when:
A. In water
B. On land
C. During hibernation only
D. In tadpole stage
✅ Ans: B. On land
Q.179. Frog respires through skin when:
A. In water
B. On land
C. During jumping
D. During aestivation only
✅ Ans: A. In water
Q.180. Which of the following statements about frog’s respiration is correct?
A. Cutaneous respiration only
B. Pulmonary respiration only
C. Cutaneous and pulmonary respiration both
D. None
✅ Ans: C. Cutaneous and pulmonary respiration both
Q.181. The circulatory system of frog is:
A. Open
B. Closed
C. Both
D. Absent
✅ Ans: B. Closed
Q.182. The heart of frog has:
A. Two chambers
B. Three chambers
C. Four chambers
D. Five chambers
✅ Ans: B. Three chambers
Q.183. RBCs of frog are:
A. Enucleated
B. Nucleated
C. Without haemoglobin
D. Colourless
✅ Ans: B. Nucleated
Q.184. Circulation in frog is termed as:
A. Single
B. Double incomplete
C. Double complete
D. Mixed
✅ Ans: D. Mixed
Q.185. Nervous system of frog is divided into:
A. Two parts
B. Three parts
C. Four parts
D. Five parts
✅ Ans: B. Three parts (Central, Peripheral, Autonomic)
Q.186. The excretory organ in frog is:
A. Mesonephric kidney
B. Pronephric kidney
C. Metanephric kidney
D. None
✅ Ans: A. Mesonephric kidney
Q.187. In male frog, testes are connected to kidneys by:
A. Vasa efferentia
B. Vas deferens
C. Ureter
D. Cloaca
✅ Ans: A. Vasa efferentia
Q.188. Male reproductive ducts and urinary ducts open into:
A. Cloaca
B. Urinary bladder
C. Rectum
D. Ureter
✅ Ans: A. Cloaca
Q.189. In female frog, the reproductive organ is:
A. Oviduct
B. Ovary
C. Cloaca
D. Testes
✅ Ans: B. Ovary
Q.190. A female frog can lay how many eggs at one time?
A. 100–500
B. 500–1000
C. 2500–3000
D. 4000–6000
✅ Ans: C. 2500–3000
Q.191. Fertilization in frog is:
A. Internal
B. External
C. Both
D. None
✅ Ans: B. External
Q.192. Development in frog is:
A. Direct
B. Indirect
C. Viviparous
D. Parthenogenetic
✅ Ans: B. Indirect
Q.193. The larval stage of frog is called:
A. Caterpillar
B. Nymph
C. Tadpole
D. Maggot
✅ Ans: C. Tadpole
Q.194. Tadpole breathes through:
A. Skin
B. Lungs
C. Gills
D. Cloaca
✅ Ans: C. Gills
Q.195. The transformation of tadpole into adult frog is known as:
A. Evolution
B. Fertilization
C. Metamorphosis
D. Differentiation
✅ Ans: C. Metamorphosis
Q.196. Frog’s mode of reproduction is:
A. Oviparous
B. Viviparous
C. Ovoviviparous
D. None
✅ Ans: A. Oviparous
Q.197. Which of the following helps in protecting frog’s eyes under water?
A. Nictitating membrane
B. Cornea
C. Retina
D. Lens
✅ Ans: A. Nictitating membrane
Q.198. The tympanum in frog helps in:
A. Hearing
B. Breathing
C. Vision
D. Balance
✅ Ans: A. Hearing
Q.199. Which of the following is not a function of skin in frog?
A. Respiration
B. Protection
C. Hearing
D. Moisture retention
✅ Ans: C. Hearing
Q.200. The excretory and reproductive ducts open into a common chamber called:
A. Ureter
B. Cloaca
C. Nephridia
D. Bladder
✅ Ans: B. Cloaca