NEET Solved Paper 2016 Question 55
Question: Which of the following characteristic features always holds true for the corresponding group of animals?
Options:
A) Cartilaginous endoskeleton Chondrichthyes
B) Viviparous Mammalia
C) Posses a mouth with an upper and a lower jaw Chordata
D) 3 - chambered heart with one incompletely divided ventricle Reptilia
Show Answer
Answer:
Correct Answer: A
Solution:
- Reptillia has an order crocodilian which shows 4 chambered heart. In mammals, prototheria group shows oviparity while metatheria and eutherian show viviparity. Chordates can be gnathostomata and agnatha (without jaws). Only cartilaginous fishes (chondrichthyes) show cartilaginous endoskeleton without exception.
