Corals are

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

Give reasons:
$(a)$ Animals of phylum Platyhelminthes are called flatworms.
$(b)$ Bryophytes are called amphibians of the plant kingdom.
$(c)$ Fungi are called saprophytes.
$(d)$ Bacteria and tapeworms are very different in their body design.
$(e)$ Plants like Pinus and deodar are called gymnosperms.

Classify organisms of kingdom $Protista$ on the following basis and give an example of each:
$(a)$ Based on structure for locomotion.
$(b)$ Based on mode of nutrition.

Which among the following have scales?
$(i)$ Amphibians
$(ii)$ Pisces
$(iii)$ Reptiles
$(iv)$ Mammals

$5$-Kingdom classification was given by: