Shifting of ammonotelism to ureotelism is seen in
fishes
protopterus
frog
snake
C.
frog
In the tadpoles, the end product of nitroger metabolism is ammonia which is easily disposed off by diffusion in water. After metamorphosis, however the frog excrete most of their nitrogen in the form of urea and only small amount as ammonia.
Tube-within-a-tube body plan is shown by
coelenterates
platyhelminthes
aschelminthes (nemathelminthes)
porifers
True coelom appeared first in the course of evolution in
Aschelminthes
Chordata
Echinodermata
Annelida
Assertion : The duck-billed Platypus and the spiny ant-eater, both are egg-laying animals yet they are grouped under mammals.
Reason : Both of them have seven cervical vertebrae and 12 pairs of cranial nerves.
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
If both Assertion and Reason are true but the Reason is not the correct explanation of the assertion
If Assertion is true but Reason is false
If both Assertion and Reason are false
Which one feature is common to leech, cockroach and scorpion
Nephridia
Cephalisation
Ventral nerve cord
Antenna
Which of the following is not found in vertebrates
Bilateral symmetry
Gill opening
Body scales
Cnidoblasts
