Question

iv) The two pairs of insect wings are articulated with pro and mesothorax. true and false
v) The secretion of prothoracic glands regulates metamorphosis in insects.
vi) Class Xiphosura is regarded as living fossil.
vii) Development in bivalves includes trochophore and veliger larvae.
viii) The blood of cephalopods contains haemocyanin.
ix) In brittle stars tube feet aid in locomotion.
x) Aristotle's lantern is a complex chewing organ of sea urchin.​

Answer 1

All the statements are true.

Answer 2

Answer:

4. false

5. true

6.true

7. true