Real organs are absent in

Write one difference for each of the following pairs:
$(i)$ Thallophyta and Bryophyta
$(ii)$ Nematoda and Annelida
$(iii)$ Amphibia and Reptilia

Why do we classify both snakes and turtles in the same class?

Which one is a true fish?

Name the phylum to which the following organisms belong:
$(a)$ Organisms which have a peculiar water-driven tube system that they use for moving around.
$(b)$ Organisms which have a foot that is used for moving around and have an open circulatory system.
$(c)$ These organisms have holes or pores all over the body. These lead to a canal system that helps in circulating water throughout the body.

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