All organisms that are similar enough to breed and perpetuate are called

What is the difference between Bryophyta and Pteridophyta?

Draw the diagram of $Spirogyra$ and label the following parts:
$(a)$ Cell wall $(b)$ Pyrenoid $(c)$ Nucleus $(d)$ Chloroplast.

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

State reasons for the following:
$(a)$ Protists have appendages like cilia or flagella.
$(b)$ Angiosperms are called so.
$(c)$ Fish have scales on their body.

$(a)$ State two characteristic features of nematodes.
$(b)$ Identify the phylum with the help of the following features:
$(i)$ Spiny-skinned,radially symmetrical,and have tube feet.
$(ii)$ Triploblastic,worm-like,having a segmented body.