NEET 2016
- Exam
- NEET
- Year
- 2016
- Subject
- Botany
- Chapter
- Animal Kingdom
NEET 2016 · Botany · Animal Kingdom
Which of the following characteristic features always holds true...
Which of the following characteristic features always holds true for the corresponding group of animals?
Options
- ACartilaginous endoskeleton - Chondrichthyes
- BViviparous - All mammals
- CPossess a mouth with an upper and a lower jaw - Chordata
- D3 – chambered heart with one incompletely divided ventricle - Reptilia
Correct answer
A. Cartilaginous endoskeleton - Chondrichthyes
Step-by-step 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 (jawed organism) and agnatha (without jaws).
Only cartilaginous fishes (chondrichthyes) show cartilaginous endoskeleton without any exception.