Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS2015ZoologyStructural Organisation in Animals

Assertion: The nymph of a cockroach undergoes moulting several times. Reason : There is gradual metamorphosis in cockroach.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIfboth assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

Gradual metamorphosis occurs in many insects such as cockroaches. In gradual metamorphosis, there are three stages: egg, nymph and adult. As nymphs, they moult several times (13 times in cockroach), but once they become adults they do not moult again. Nymphs are similar in shape to the adults, but smaller in size and without wings.

Practice Structural Organisation in Animals on Quantrex Academy →

More from Structural Organisation in Animals

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. 2026Choose 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 2026In frogs, the number of pairs of cranial nerves arising from the brain are __________. 2026What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog? 2025In frog, the Renal portal system is a special venous connection that acts to link : 2025Which of the following statement is correct about location of the male frog copulatory pad? 2025Match List I with List II : array |l|l|l|l| & List - I & & List - II A. & Squamous Epithelium & I. & Goblet cells of alimentary canal B. & Ciliated Epithelium & II. & Inner lining 2024Which of the following is/are present in female cockroach? A. Collateral gland B. Mushroom gland C. Spermatheca D. Anal style E. Phallic gland Choose the most appropriate answer fr 2024 Full Structural Organisation in Animals list All AIIMS PYQs