Why do arthropods undergo moulting?

Arthropods lack

Arthropods lack

Given below are assertion and reason. Point out if Assertion : The nymph of Cockroach undergoes moulting several times Reason : There is gradual metamorphosis in Cockroach

Why does hnRNA to undergo splicing ? Where does splicing occur in the cell ?

Why do alkenes undergo electrophilic addition reactions ? Discuss the mechanism of electrophilic addition reactions of alkenes.

Why do alkenes prefer to undergo electrophilec addition reaction while arenes prefer electrophilic substitution reactions ? Explain.

In arthropods ecdysis is

Why do aldehydes and ketones undergo a number of addition reactions ?

About how many times does the nymph of Periplaneta americana undergo moulting before becoming an adult ?

About how many times does the nymph of Periplaneta americana undergo moulting before becoming an adult ?