Q.
What external changes are visible after the last moult of a cockroach nymph?
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
Both fore wings and hind wings develop
b
Labium develops
c
Mandibles become harder
d
Anal cerci develop.
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
In Periplaneta americana, 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.
Watch 3-min video & get full concept clarity