Question

2. (a) Identify the given diagram.
(b) Label A, B, C and D.
(c) Name the phylum in which notochord is present.
(d) Name the subphylum in which notochord is present at some stage in life.
(e) Give an example from the subphylum Vertebrata in which animals have cartilaginous exoskeleton​

Answer 1

Answer:

(a)The diagram shows it amphioxus and it belongs to phylum-chordata nd sub-phylum-cephalohordata.it shows it's parts likes

(b)A-Anus

B-Endostyle

C-Notochord

D-Nerve chord

(c)-phylum-protochordata

(d)-cephalochordata

(e)-exoskeleton is cartilagenous.body is covered by minute Placoid scals.it example is scoliodon,Torpedo,Trygon etc.

Answer 2

Answer:

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Explanation:

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