Match the following:
(a) Operculum (i) Ctenophora
(b) Parapodia (ii) Mollusca
(c) Scales (iii) Porifera
(d) Comb plates (iv) Reptilia
(e) Radula (v) Annelida
(f ) Hairs (vi) Cyclostomata and Chondrichthyes
(g) Choanocytes (vii) Mammalia
(h) Gill slits (viii) Osteichthyes
Segmentation in the body is first observed in which of the following:
(a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda
Could the number of eggs or young ones produced by an oviparous and
viviparous mother be equal? Why?
“All vertebrates are chordates but all chordates are not vertebrates”.
Justify the statement.
Water vascular system is the characteristic of which group of the
following:
(a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata
What are the reasons that you can think of for the arthropods to
constitute the largest group of the animal kingdom?
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