Question No : 15
Which of the following is not a chordate character?
Question No : 16
Which of the following possesses electric organs and belongs to class chondrichthyes?
Question No : 17
Which of the following possesses poison sting and belongs to class chondrichthyes?
Question No : 18
In amphibians, respiration occurs through
Question No : 19
In amphibians, heart is ________ chambered.
Question No : 20
Heart is three - chambered in reptiles, except
Question No : 21
Which of the following is a poisonous snake?