Identify and write the names of the parts labeled as $A, B, C$ and $D$ in the given figure of a seahorse in your answer book.

Hard calcium carbonate structures are used as a skeleton by

In which group of animals is the coelom filled with blood?

$A$ plant specimen was found without differentiated roots.
$(a)$ Which plant structure helps in attaching this plant to the substratum?
$(b)$ To which group would you classify this plant?
$(c)$ Which plant could it be?

How are fungi similar and dissimilar to plants?

State reasons for the following:
$(a)$ Tapeworm does not have a digestive tract.
$(b)$ Frogs use both skin and lungs for breathing.
$(c)$ Birds have pneumatic/hollow bones.