Which of the following organisms exhibit eith | vedclass

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(D) $1$. $Platyhelminthes$ (flatworms) are generally hermaphroditic and exhibit internal fertilization.$2$. $Mollusca$ (mollusks) exhibit both interna

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$ (B) $ and $ (C) $ both

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(D) $1$. $Platyhelminthes$ (flatworms) are generally hermaphroditic and exhibit internal fertilization.$2$. $Mollusca$ (mollusks) exhibit both internal and external fertilization depending on the class (e.g.,bivalves often show external,while cephalopods show internal).$3$. $Chordata$ (chordates) exhibit both internal and external fertilization depending on the group (e.g.,most mammals show internal,while many bony fishes and amphibians show external).$4$. Therefore,both $Mollusca$ and $Chordata$ exhibit either internal or external fertilization.

Column $X$	Column $Y$
$(1)$ Skin without scales	$(P)$ Catla
$(2)$ Placoid scales	$(Q)$ Hagfish
$(3)$ Cycloid scales	$(R)$ Chameleon
$(4)$ Epidermal scales	$(S)$ Ray-fish

Which of the following organisms exhibit either internal or external fertilization?

Similar Questions

Select the correct match for $X$ and $Y$:
Column $X$ Column $Y$
$(1)$ Skin without scales $(P)$ Catla
$(2)$ Placoid scales $(Q)$ Hagfish
$(3)$ Cycloid scales $(R)$ Chameleon
$(4)$ Epidermal scales $(S)$ Ray-fish

Which of the following are cold-blooded (poikilothermic) animals?

Match the following columns and select the correct option.
Column $-I$ | Column $-II$
$(a)$ $6-15$ pairs of gill slits | $(i)$ Trygon
$(b)$ Heterocercal caudal fin | $(ii)$ Cyclostomes
$(c)$ Air Bladder | $(iii)$ Chondrichthyes
$(d)$ Poison sting | $(iv)$ Osteichthyes

Prepare a list of some animals that are found parasitic on human beings.

Which of the following pairs is mismatched?

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