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Test: Structural Organisation in Animals - NEET MCQ


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10 Questions MCQ Test - Test: Structural Organisation in Animals

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Test: Structural Organisation in Animals - Question 1

Recognise the figure and find out the correct match.

Recognise the figure and find out the correct matching.

Detailed Solution for Test: Structural Organisation in Animals - Question 1

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Test: Structural Organisation in Animals - Question 2

Assertion (A): Frogs are poikilothermic animals.
Reason (R): They maintain a constant body temperature irrespective of the environment.

Detailed Solution for Test: Structural Organisation in Animals - Question 2
Frogs are cold-blooded; their body temperature varies with the environment. Hence A is correct but R is false.
Test: Structural Organisation in Animals - Question 3

Consider the following statements:
a) Frog’s RBCs are nucleated.
b) Frogs respire only through lungs.
c) Sinus venosus joins the right atrium in frog’s heart.
d) Male frog has vocal sacs.

Choose the correct option:

Detailed Solution for Test: Structural Organisation in Animals - Question 3
RBCs are nucleated, sinus venosus connects to right atrium, and male frogs have vocal sacs. Respiration is through skin, buccal cavity, and lungs (not only lungs).
Test: Structural Organisation in Animals - Question 4
Which of the following statements are true for frog’s excretory system?
a) Kidneys are dark red, bean-shaped, located on either side of vertebral column.
b) Excretory waste is ammonia.
c) Ureters in male frogs act as urinogenital ducts.
d) Cloaca is a common chamber for excretion and reproduction.
Detailed Solution for Test: Structural Organisation in Animals - Question 4
Frogs are ureotelic (excrete urea, not ammonia). Statements a, c, d are correct.
Test: Structural Organisation in Animals - Question 5

Identify correct statements about frog’s reproductive system:
a) Fertilisation is external.
b) A female lays 250–300 ova at a time.
c) Tadpole stage is present in life cycle.
d) Oviducts in females open into cloaca.

Detailed Solution for Test: Structural Organisation in Animals - Question 5

Female lays 2500–3000 ova, not 250–300. Fertilisation is external, tadpole stage occurs, and oviducts open into cloaca.

Test: Structural Organisation in Animals - Question 6
Which of the following systems in frog shows presence of both hepatic and renal portal systems?
Detailed Solution for Test: Structural Organisation in Animals - Question 6
Circulatory system includes hepatic portal (liver–intestine) and renal portal (kidney–lower body).
Test: Structural Organisation in Animals - Question 7
What is the function of the nictitating membrane in frogs?
Detailed Solution for Test: Structural Organisation in Animals - Question 7
The nictitating membrane acts as a protective covering for eyes during swimming.
Test: Structural Organisation in Animals - Question 8
Which of the following best describes the respiration in frog during hibernation?
Detailed Solution for Test: Structural Organisation in Animals - Question 8
During aestivation and hibernation, gaseous exchange takes place mainly through skin (cutaneous respiration).
Test: Structural Organisation in Animals - Question 9
Which of the following glands in frogs are endocrine in nature?
Detailed Solution for Test: Structural Organisation in Animals - Question 9
Major endocrine glands include pituitary, thyroid, parathyroid, thymus, pineal body, pancreatic islets, adrenal, and gonads.
Test: Structural Organisation in Animals - Question 10
Select the correct route for the passage of sperms in male frogs:
Detailed Solution for Test: Structural Organisation in Animals - Question 10
Sperms are produced in the testes, carried by vasa efferentia into the kidney, then enter Bidder’s canal, pass through the urinogenital duct, and finally exit through the cloaca.
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