Hydra can paralyse prey by
Nematocyst is the specialized cell in the tentacles of hydra. It is also called as cnidocyte and carries neurotoxin that projects in self-defense and to catch preys. When neurotoxin comes in contact with prey it paralyzes them by suppressing the activity of the nervous system.
The immediate regeneration of ATP used up during muscle contraction is facilitated by
Immediate membrane covering the mammalian egg is
Immediately after ovulation, the layer that forms around the ovum is called corona radiata. It is formed by the granulosa cells of cumulus oophorus. Corona radiata probably Increases the likelihood that the ovum will be picked up in the uterine tube.
The clitellum or cingulum in Earthworm is present in
Correct Answer :- c
Explanation : Clitellum or cingulum- It is a circular or glandular band around 14th, 15th, and 16th It secrets albumen, globulin and egg case(cocoon). It divides the body of the earthworm into pre-clitellar, clitellar and post-clitellar.