Write the most striking features of the following phyla:
$(i)$ Arthropoda
$(ii)$ Amphibia
$(iii)$ Porifera
$(i)$ Arthropoda
$(ii)$ Amphibia
$(iii)$ Porifera
(N/A) $(i)$ Arthropoda: They possess jointed appendages and a chitinous exoskeleton.
$(ii)$ Amphibia: They are adapted to live both in water and on land,and they typically have moist,glandular skin without scales.
$(iii)$ Porifera: They are multicellular organisms with a body characterized by numerous pores (ostia) and a canal system for water circulation.
$(ii)$ Amphibia: They are adapted to live both in water and on land,and they typically have moist,glandular skin without scales.
$(iii)$ Porifera: They are multicellular organisms with a body characterized by numerous pores (ostia) and a canal system for water circulation.
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