Deck 10: The Anatomy and Physiology of the Eye, Light Refraction, and Cellular Processes in Biology

Question 1

The middle vascular coat that darkens the eye chamber and prevents refraction by absorbing the light rays is

A)choroid
B)sclera
C)retina
D)cornea

Answer 1

choroid

Question 2

The eye lens is a

A)transparent double-convex lens
B)transparent double-concave lens
C)transparent concavo-convex lens
D)none of these

Answer 2

transparent double-convex lens

Question 3

The eye lens contains a watery liquid called the

A)aqueous humour
B)peroxide
C)vitreous humour
D)none of these

Answer 3

aqueous humour

Question 4

Long-sightedness is caused by the eyeball being too short. It can be corrected by the use of a

A)convergent lens
B)plane mirror
C)divergent lens
D)none of these

Question 5

A lens which is thicker in the middles and thinner at the edges is called a _____ lens.

A)convex
B)concave
C)cylindrical
D)none of these

Question 6

A lens which is thinner at the middles and thicker at the edges is called a _____ lens.

A)convex
B)concave
C)cylindrical
D)none of these

Question 7

Which of the following lens is used to minimise hypermetropia?

A)convex lens
B)concave lens
C)cylindrical lens
D)none of these

Question 8

Most of the refraction of light takes place in the

A)iris
B)cornea
C)pupil
D)retina

Question 9

When the light is very bright,

A)the iris makes the pupil expand
B)the iris makes the pupil contract
C)the iris and the pupil remain as they are
D)none of these

Question 10

Who discovered by his experiments with glass prisms that white light consists of seven colours?

A)Newton
B)Faraday
C)Maxwell
D)Young

Question 11

The light which refracts most while passing through a prism is

A)red
B)violet
C)indigo
D)yellow

Question 12

The planet having the largest number of satellites amongst the following is

A)Jupiter
B)Saturn
C)Uranus
D)Mars

Question 13

In the absence of his tone proteins in prokaryotes, the an ioinic charges of each inter nucleotide phosphate in DNA is neutralized by

A)phospholipids
B)polyamines
C)polysaccharides
D)glycelipids

Question 14

Phagocytosis and pinocytosis are collectively termed as

A)endocytosis
B)suspension feeding
C)omnivores
D)mucous trap

Question 15

Which one of the following is called pacemaker of the heart?

A)SA node
B)AV node
C)Chordae tendinae
D)AV septum

Question 16

The life span of human WBCs is normally

A)12-13 days
B)80-90 days
C)100-120 days
D)20-30 days

Question 17

Oxygenated bold is carried by

A)pulmonary vein
B)pulmonary artery
C)hepatic portal vein
D)renal vein

Question 18

The reserve food in fungal cell is

A)glucose
B)fructose
C)glycogen
D)starch

Question 19

Trypanosoma is

A)bacteria
B)fungus
C)algae
D)protozoa

Question 20

Seeds are called the products of sexual reproduction due to

A)it gives rise to new plants
B)formation by fusion of pollen tubes
C)it can survive for longer periods
D)are formed by fusion of gametes

Question 21

The most essential organ for fertilization is

A)juicy fruit
B)green sepals
C)coloured petals
D)mature ovule

Question 22

BCG vaccine is used to protect a child from

A)polio
B)plague
C)dengue
D)tuberculosis

Question 23

Bulliform cells are present in

A)lower epidermis of monocot leaves
B)upper epidermis of monocot leaves
C)dicot stem
D)upper epidermis of dicot leaves