Two-chambered heart occurs in

Write the most striking features of the following phyla:
$(i)$ Arthropoda
$(ii)$ Amphibia
$(iii)$ Porifera

Fill in the blanks:
$(a)$ Five kingdom classification of living organisms is given by ..............
$(b)$ Basic smallest unit of classification is .............
$(c)$ Prokaryotes are grouped in Kingdom ...............
$(d)$ Paramecium is a protista because of its ...............
$(e)$ Fungi do not contain .............
$(f)$ $A$ fungus ............. can be seen without microscope.
$(g)$ Common fungi used in preparing the bread is ...............
$(h)$ Algae and fungi form symbiotic association called ...........

Which among the following phyla is exclusively marine?

$A$ 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?

Write appropriate terms for the following:
$(i)$ Animals that are able to maintain a constant body temperature over a wide range of environmental temperatures.
$(ii)$ Animals which have a pseudocoelom.
$(iii)$ Plants which bear naked seeds.