Kerala PSC Examination Expected Questions - 388

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521.Snakes recognise smell using:

Answer :- Tongue

522.The bird that can fly backwards:
Answer :- Humming bird

523.The bird which uses its wings for swimming:
Answer :- Penguin

524.The study of eye:
Answer :- Ophthalmology

525.The study of skin:

Answer :- Dermatology

526.Which part of the retina has no power of vision:
Answer :- Blind spot

527.The pigment that gives colour to Skin:
Answer :- Melanin

528.The diameter of the eye ball:
Answer :- 2.5 cm

529.Night blindness is caused by the deficiency of vitamin:
Answer :- A

530.Which organism has the highest power of olefaction?
Answer :- Shark