NEET2013ZoologyStructural Organisation in AnimalsActual

What external changes are visible after the last moult of a cockroach nymph?

Options

AMandibles become harder
BAnal cerci develop
CBoth fore wings and hind wings develop
DLabium develops

Correct answer

C. Both fore wings and hind wings develop

Step-by-step solution

In cockroach, development is pauro metabolous. The nymph grows by moulting about 13 times to reach the adult form. The next to last nymphal stage has wing pads but only adult cockroaches have wings. Anal cerci are a pair of jointed filamentous structures in 10th segment of both sexes. Labium is a lover lip and a pair of mandibles are present in mouthparts of cockroach.

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. 2026 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 2026 In frogs, the number of pairs of cranial nerves arising from the brain are __________. 2026 What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog? 2025 In frog, the Renal portal system is a special venous connection that acts to link : 2025 Which of the following statement is correct about location of the male frog copulatory pad? 2025 Match 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 2024 Which 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 NEET PYQs