Question

(a)identify two features possessed by all chordates. (b) In which class would you place any organism which has (1)a scaly exoskelton and a bony endoskeltion (2)a scaly exoskelton and lay eggs out side the water.

Answer 1

A. Features of Chordates —
i. All chordates have a dorsal supportive notochord.
ii. The Hollow nerve chord runs dorsal to the notochord.

B. 1) Scaly exoskeleton and bony endoskeleton - Class Pieces
2) Scaly exoskeleton and lay eggs outside - Class Reptilia

Answer 2

. Features of Chordates —

i. All chordates have a dorsal supportive notochord.

ii. The Hollow nerve chord runs dorsal to the notochord.

B. 1) Scaly exoskeleton and bony endoskeleton - Class Pieces

2) Scaly exoskeleton and lay eggs outside - Class Reptilia

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