Tube feet in star-fish are used for:
A.Locomotion
B.Food capturing
C.Both of these
D.None of these
Category: Phylum Echinodermata Mcqs
In which of these eye defects the lens looses its transparency and the defect occurs at the aging:
A.Hypermetropia
B.Myopia
C.Astigmatism
D.Cataract
Madreporite is present in:
A.Star-fish
B.Ascaris
C.Hydra
D.House-fly
Ring-canal is found in:
A.Cockroach
B.Sycon
C.Star-fish
D.Metridium
In bright light rhodopsin:
A.Disappears or is reduced
B.Breaks into opsin and retinine
C.Is resynthesized
D.Breaks into scotopsin and iodopsin
Tepatum fibrosum is found in the eyes of:
A.Hoofed mammals
B.Elephant
C.Whales
D.All of these
The disappearance of rhodopsin is an adaptation in:
A.Nocturnal animals
B.Diurnal animals
C.Both (a) & (b)
D.None of these
Rhodopsin is also called:
A.Visual purple
B.Visual voilet
C.Visual red
D.None of these
Pressure of vibrations received by membrane of fenestra ovalis are received by perilymph present in:
A.Scala Vestibuli
B.Organ of Corti
C.Helicotremma
D.None of these
The diameter of eye ball in an adult man is:
A.10-15 cms
B.15-20 cms
C.20-21 cms
D.None of these
