What will you look for to identify the sex of | vedclass

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(D) is the correct answer.In $Ascaris$,the female has a straight tail end,while the male has a ventrally curved tail end.Anal cerci are present in bot

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Male shark - claspers borne on pelvic fins

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(D) is the correct answer.In $Ascaris$,the female has a straight tail end,while the male has a ventrally curved tail end.Anal cerci are present in both male and female cockroaches,whereas anal styles are present only in males.In frogs,the nuptial or copulatory pad is found on the first digit of the $forelimb$ (not hind limb) in males,which helps in gripping the female during mating.In male sharks,the pelvic fins are modified into structures called claspers,which are used for copulation. Thus,the presence of claspers is a reliable feature to identify a male shark.

Column-$I$	Column-$II$
$(a)$. Limulus	$(i)$. Tusk shell
$(b)$. Ophiura	$(ii)$. Tapeworm
$(c)$. Taenia	$(iii)$. Brain coral
$(d)$. Meandrina	$(iv)$. King crab
$(e)$. Dentalium	$(v)$. Brittle star

What will you look for to identify the sex of the following?

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Cleidoic eggs are a characteristic feature of which of the following?

Based on cellular mechanisms, there are two major types of regeneration found in animals. Which one of the following is the correct example of the type mentioned?

Match the animals in Column-$I$ with their common names in Column-$II$.
Column-$I$ Column-$II$
$(a)$. Limulus $(i)$. Tusk shell
$(b)$. Ophiura $(ii)$. Tapeworm
$(c)$. Taenia $(iii)$. Brain coral
$(d)$. Meandrina $(iv)$. King crab
$(e)$. Dentalium $(v)$. Brittle star

Identify the correct terms for the following analogy-based questions:
$(i)$ Porifera : Asymmetrical :: Cnidaria : .........
$(ii)$ Annelida : Coelomate :: Platyhelminthes : ......

In which phyla of animals is an open circulatory system found?

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