NEET · Biology —

Structural Organisation in Animals appeared 2 times across 1 year — 2.2% of Biology. This question is from Frog Internal Anatomy.

Year 2024 Total
Questions 2 2
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Choose the correct statements regarding frog's anatomy: A. Hepatic portal system is the special venous connection between liver and intestine. B. There are twelve pairs of cranial nerves arising from the brain. C. The ureters and oviducts open separately into the cloaca in female frogs. D. Hind-brain consists of cerebellum, medulla oblongata and optic lobes. E. Sinus venosus joins the right atrium of heart. Choose the correct answer from the options given below:

Solution & Explanation

Related Formula

Frog Anatomy: 10 pairs cranial nerves, Midbrain = Optic lobes, Hepatic portal system = Liver-Intestine connection

Core Logic

Evaluating frog anatomical statements:

  • A (Correct): Hepatic portal system connects intestine and liver.
  • B (Incorrect): Frogs have 10 pairs of cranial nerves, not 12.
  • C (Correct): In female frogs, ureters and oviducts open separately into the cloaca.
  • D (Incorrect): Optic lobes are part of the midbrain, not the hindbrain (hindbrain consists of cerebellum and medulla oblongata).
  • E (Correct): Sinus venosus is a triangular structure that opens into the right atrium.
Step 1: Conclusion

Statements A, C, and E are correct.

Pattern Recognition

Sees: "frog cranial nerves 12 pairs" (False, 10 pairs) and "hindbrain contains optic lobes" (False, midbrain). Shortcut: Eliminate options with B or D.

Chapter Mix

Class 11 Biology: Structural Organisation in Animals

Reference Study Guides

Structural Organisation In Animals

More Structural Organisation in Animals Previous-Year Questions

Q164 neet_2024_05_may_morning Frog Sexual Dimorphism
Male frogs can be distinguished from female frogs due to the presence of: A. Bulging eyes B. Vocal sacs C. Webbed digits in feet D. Copulatory pad on first digit of fore limbs E. Olive green-coloured skin with dark irregular spots Choose the correct answer from the options given below:
  • A. B and D only
  • B. B and C only
  • C. A and B only
  • D. C and E only

Solution

Related Formula

Male Frog Secondary Sexual Characteristics = Vocal Sacs + Copulatory (Amplexutory) Pad on 1st Digit of Forelimbs

Core Logic

Male frogs can be distinguished from female frogs by the presence of sound-producing vocal sacs and a copulatory (amplexutory) pad on the first digit of the forelimbs. Bulging eyes, webbed feet digits, and olive green skin with dark spots are common morphology in both male and female frogs.

Step 1: Conclusion

Only statements B and D are male-specific features.

Pattern Recognition

Sees: "male frogs distinguished female frogs". Shortcut: Vocal sacs and copulatory pad on 1st forelimb digit.

Chapter Mix

Class 11 Biology: Structural Organisation in Animals

More Structural Organisation in Animals Questions — neet_2024_05_may_morning

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