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  • Which of the following statements are true for the phylum -Chordata? (a) In a Urochrdata notochord extends from head to tail and it is present throughout their life. (b) In Vertebrata notochord is present during the embryonic period

Which of the following statements are true for the phylum -Chordata?

(a) In a Urochrdata notochord extends from head to tail and it is present throughout their life.

(b) In Vertebrata notochord is present during the embryonic period only

(c) Central nervous system is dorsal and hallow

(d) Chordata is divided into 3 subphyla: Hermichordata, Tunicata and Cephalochordata
 

Option: 1 (d) and (c)
Option: 2 (c) and (a)
Option: 3 (a) and (b)  
Option: 4 (b) and (c)

Answers (1)

best_answer

In the phylum Chordata:

In Vertebrata, the notochord is present during the embryonic stage only 

The nerve cord is dorsal and hollow.

Hence, the correct option is (d).

Posted by

Ritika Jonwal

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