Animal Kingdom Question 62
62. Which one of the following phyla is correctly matched with its two general characteristics?
(a) Arthropoda $\hspace{3mm}$-$\hspace{3mm}$ Body divided into head, thorax and abdomen and respiration by tracheae
(b) Chordata $\hspace{3mm}$-$\hspace{3mm}$ Notochord at some stage and separate anal and urinary openings to the outside
(c) Echinodermata $\hspace{3mm}$-$\hspace{3mm}$ Pentamerous radial symmetry and mostly internal fertilization
(d) Mollusca $\hspace{3mm}$-$\hspace{3mm}$ Normally oviparous and development through a trochophore or veliger larva
Show Answer
Answer : d
Hints & Solutions
(d) Mollusca mostly oviparous and a few viviparous. The development may be direct or indirect with trochophore, velliger and glochidium.
