Question

1. Give an example of an animal whose body is : i. Bilaterally symmetrical ii. Asymmetrical Iii .Radially symmetrical 2. Mention two features and phylum of: i. Starfish ii. Snail iii. Octopus iv. Amphioxus

Answer 1

Answer:

i.Earthworm

ii.sponges

iii.starfish

2.i.starfish:-

phylum:-echinodermata,

They are exclusively marine animals.

They exhibit organ level of organization.

They are triploblastic and have a coelomic cavity.

ii.snail:-

phylum:-mollusca

They have visceral hump.

They are bilaterally symmetrical.

iii.octopus:-

phylum:-Cephalopoda

They have three hearts and blue blood.

Octopuses are ocean creatures.

iv.Amphioxus:-

A dorsal hollow neural tube is present.

They have post anal tails.

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