Question

General characters of all phylum

Answer 1

Answer:

(Echinos: Spines; derma: Skin)

Kingdom: Animalia.

Habitat: These are exclusively marine.

Grade of organization: organ system grade.

Germ layer: triploblastic.

Symmetry: Adults are radially symmetrical while the larvae are bilaterally symmetrical.

Coelom: present ( coelomate)

Body without segmentation.

Answer 2

General characters of all phylum are as follows:-

• They are bilaterally symmetrical and triploblastic.
• Chordates are coelomate and show an organ system level of organisation.
• They have the characteristic notochord, dorsal nerve cord, pharyngeal slits.
• Also, they have a post-anal
• In this phylum, the nervous system is dorsal, hollow and single.
• The heart is ventral, with a closed circulatory system.
• The habitat of these animals is widespread. So we can find them in the marine environment, fresh waters as well as terrestrial environments.