Question

In which of the following urochordatea, na larval stage is found in
their life history :
(1) Pyrosomida
(2) Enterogona
(3) Doliollda
(4) Pleurogona​

Answer 1

Answer:

There are two subphyla known as Urochordata and Cephalochordata. These two groups are known due to the absence and presence of notochord. These are the groups which are often called as protochordates. These are forms of marine animal. In the animals which are from the group of Cephalochordata, there is notochord which extends from head to tail region. The structure remains persistent throughout the life of the organism. In Urochordata, notochord is present only in larval stage in the tail.

Thus, the correct answer is option C.