Diversity in Li...

Given below are assertion and reason. Point out if both are true with reason being correct explanation (A), both true but reason not correct explanation (B), assertion true but reason wrong (C), both wrong (D).
Assertion. Lateral line system is found in fishes and aquatic larval amphibians.
Reason. Lateral line system has receptors which are the clusters of sensory cells derived from ectoderm.

Aquatic animal with prehensile tail is

Fishes with swim bladder without direct communication with exterior and where there is little separation of secretory and absorbent parts are

Shagreen is skin of:

Scoliodon is called dog fish because of its:

In fast swimming fishes, propulsion is mainly due to

Vertebrates do not possess

Veliger larva occurs in ____________.

Which of these is an ectoparasite?