$5$-Kingdom classification was given by:

Which one is the most striking or common character of the vertebrates?

Sehai and Sidak observed an animal in their garden. Sehai called it an insect while Sidak said it was an earthworm. Choose the character from the following which confirms that it is an insect.

Name two plants for each of the following types:
$(i)$ Vascular cryptogams
$(ii)$ Naked seeded plants
$(iii)$ Flowering plants

Real organs are absent in

State whether the following statements are True $(T)$ or False $(F)$:
$(a)$ Gymnosperms differ from Angiosperms in having covered seeds.
$(b)$ Non-flowering plants are called Cryptogamae.
$(c)$ Bryophytes have conducting tissue.
$(d)$ Funaria is a moss.
$(e)$ Compound leaves are found in many ferns.
$(f)$ Seeds contain an embryo.