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Biology 10 Chapte 12 - Coordination and Control - 14
1.
Which layer contains photosensitive cells?
a) Cornea
b) Sclera
c) Retina
d) Choroid
2.
Which of the following is the photosensitive cell?
a) Fovea
b) Rods
c) Optic disc
d) None of these
3.
Which of the following is the photosensitive cell?
a) Cones
b) Fovea
c) All are correct
d) Optic disc
4.
Rods are sensitive to ..................light?
a) Bright
b) None of these
c) Dim
d) Colourful
5.
Cones are sensitive to ..................light?
a) Dim
b) Bright
c) Laser
d) None of these
6.
Which photosensitive cell distinguishes different colours?
a) Fovea
b) None of these
c) Rods
d) Cones
7.
How many points retina has?
a) Four
b) Five
c) Two
d) Three
8.
Dip in retina, directly opposite to lens is called?
a) Rods
b) Optic disc
c) Fovea
d) Cones
9.
Fovea is densely packed with ................... cells?
a) Tapetum
b) Muscular
c) Cones
d) Rods
10.
What is the point on retina called where the optic nerve enters retina?
a) Cones
b) Rods
c) Optic disc
d) Fovea
11.
What is the point called where no rods and cones are present?
a) Fovea
b) Blind spot
c) Tapetum
d) Optic disc
12.
In human eye, how many rods are present?
a) 140 lakhs
b) 130 lakhs
c) 125 lakhs
d) 135 lakhs
13.
In human eye, how many cones are present?
a) 8 lakhs
b) 9 lakhs
c) 6 lakhs
d) 7 lakhs
14.
What is the reason of the shining of eyes of cats and dogs at night?
a) Presence of more rods
b) Presence of less rods
c) Presence of more cones
d) Presence of Tapetum
15.
Into how many chambers, the cavity of eye can be divided?
a) Three
b) Five
c) Four
d) Two
16.
The anterior chamber is ......................iris?
a) In front of
b) Above
c) Below
d) Behind
17.
What is the fluid present in anterior chamber called?
a) Aqueous humour
b) Rhodopsin
c) Vitreous humour
d) Iodopsin
18.
The colour of aqueous humour is............?
a) Purple
b) Blue
c) Clear
d) None of these
19.
What is the fluid present in posterior chamber called?
a) Aqueous humour
b) Iodopsin
c) Vitreous humour
d) Rhodopsin
20.
Vitreous humour is .......................fluid?
a) Clear
b) Blue
c) Transparent
d) Jelly-like
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