Question

1- Make two labelled drawings: 1) a lancelet, and 2) a benthic tunicate. Then discuss why both organisms are placed in the phylum Chordata.

2-Describe a) the mammal characteristics and b) the Carnivora characteristics evident in a domestic cat Felis silvestris catus.

Answer 1

Question

1.

Figure: Lancelet

Figure: Benthic tunicate

The lancelets and benthic tunicate are kept in the phylum chordata because both the organism have notochord, a hollow dorsal nerve cord and presence of phyarangeal slits. Therefore, both these marine animals are chordates.

2.

a. The mammal characterstic in a domestic cat are:

I. Presence of mammary gland.

II. Presence of functional lungs.

III. Warm-blooded.

IV. Presence of backbone.

V. Nourish the young ones with milk

VI. Presence of 4 chamber heart.

b. Carnivora characterstics in a domestic cat are:

I. Strong flexible body.

II. Have sharp teeth.

III. Have quick reflex.

IV. Have retracable claw.

V. High sense of smell