Biology Multiple Choice Questions Set – 1

Question 1.

Ordinary table salt is sodium chloride. What is baking soda?

A. Potassium chloride
B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate

D. Sodium bicarbonate


Question 2.

Movement of cell against concentration gradient is called

A. osmosis
B. active transport
C.diffusion
D. passive transport

B. active transport


Question 3.

Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

A. all gymnosperms, except conifers
B. only angiosperms
C. only conifers
D. angiosperms and all gymnosperms except conifers

C. only conifers


Question 4.

Most highly intelligent mammals are

A. whales
B. dolphins
C. elephants
D. kangaroos

B. dolphins


Question 5.

Ozone hole refers to

A. hole in ozone layer
B. decrease in the ozone layer in troposphere
C. decrease in thickness of ozone layer in stratosphere
D. increase in the thickness of ozone layer in troposphere

C. decrease in thickness of ozone layer in stratosphere


Question 6.

Photosynthesis generally takes place in which parts of the plant?

A. Leaf and other chloroplast bearing parts
B. steam and leaf
C. Roots and chloroplast bearing parts
D. Bark and leaf

A. Leaf and other chloroplast bearing parts


Question 7.

One of the following is not a function of bones.

A. Place for muscle attachment
B. Protection of vital organs
C. Secretion of hormones for calcium regulation in blood and bones
D. Production of blood corpuscles

C. Secretion of hormones for calcium regulation in blood and bones


Question 8.

Plant development is influenced by

A. quality of light only
B. quality and quantity of light
C. quality and duration of light
D. quality, quantity and duration of light

D. quality, quantity and duration of light


Question 9.

Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

A. angiosperms
B. gymnosperms
C. monocotyledons
D. dicotyledons

B. gymnosperms


Question 10.

Most fish do not sink in water because of the presence of:
I. swim bladder
II. air bladder
III. air sacs
IV. air in spongy bones

A. I and II are correct
B. I and III are correct
C. III and IV are correct
D. I, II, III and IV are correct

A. I and II are correct


Question 11.

Plants absorb most part of water needed by them through their

A. embryonic zone
B. growing point
C. root hairs
D. zone of elongation

C. root hairs


Question 12.

Prokaryotic cells lack

A. nucleolus
B. nuclear membrane
C. membrane bound by organelles
D. All of these

D. All of these


Question 13.

Pollination is best defined as

A. transfer of pollen from anther to stigma
B. germination of pollen grains
C. growth of pollen tube in ovule
D. visiting flowers by insects

A. transfer of pollen from anther to stigma


Question 14.

Plants synthesis protein from

A. starch
B. sugar
C. amino acids
D. fatty acids

C. amino acids


Question 15.

Photo-oxidation is

A. photorespiration
B. photolysis
C. light and oxygen induced breakdown
D. All of the above

D. All of the above


Question 16.

Photosynthesis takes place faster in

A. yellow light
B. white light
C. red light
D. darkness

B. white light


Question 17.

Plants receive their nutrients mainly from

A. chlorophyll
B. atmosphere
C. light
D. soil

D. soil


Question 18.

Plants absorb dissolved nitrates from soil and convert them into

A. free nitrogen
B. urea
C. ammonia
D. proteins

A. free nitrogen


Question 19.

Process of cell division can take place by

A. heterosis
B. fusion
C. mitosis
D. None of these

C. mitosis


Question 20.

Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

A. Robert Hooke
B. Robert Brown
C. Rudolf Virchow
D. Theodore Schwann

B. Robert Brown


Biology GK Questions All SET MCQ-


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