Explore topic-wise MCQs in General Knowledge.

This section includes 76 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.

51.

Prothrombin which helps in clotting of blood is released by

A. lymphocytes
B. erythrocytes
C. monocytes
D. blood platelets
Answer» E.
52.

Other than spreading malaria, anopheles mosquitoes are also vectors of

A. dengue fever
B. filariasis
C. encephalitis
D. yellow fever
Answer» C. encephalitis
53.

Myopia is connected with

A. ears
B. eyes
C. lungs
D. None of these
Answer» C. lungs
54.

Most of the red, blue and purple colours of plants are due to a pigment called

A. anthocyanin
B. carotene
C. chlorophyll
D. xanthophylls
Answer» B. carotene
55.

Phloem is a tissue found in

A. reproductive organs of animals
B. plants
C. insects
D. mammals
Answer» C. insects
56.

Plants that grow in saline water are called

A. halophytes
B. hydrophytes
C. mesophytes
D. thallophytes
Answer» B. hydrophytes
57.

Pyorrhoea is a disease of the

A. nose
B. gums
C. heart
D. lungs
Answer» C. heart
58.

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
Answer» E.
59.

Prokaryotic cells lack

A. nucleolus
B. nuclear membrane
C. membrane bound by organelles
D. All of these
Answer» E.
60.

Process of cell division can take place by

A. heterosis
B. fusion
C. mitosis
D. None of these
Answer» D. None of these
61.

Most highly intelligent mammals are

A. whales
B. dolphins
C. elephants
D. kangaroos
Answer» C. elephants
62.

Photo-oxidation is

A. photorespiration
B. photolysis
C. light and oxygen induced breakdown
D. All of the above
Answer» E.
63.

Plant have ____ while animals lack it.

A. starch
B. cellulose
C. protein
D. fat
Answer» C. protein
64.

Plants developing in dry conditions are

A. xerophytes
B. mesophytes
C. lithophytes
D. hydrophytes
Answer» B. mesophytes
65.

Nitrogen is fixed in ecosystems in ways stated below. Which one of the statements below is false?

A. By cyanobacteria
B. By electrical discharges in the atmosphere
C. By industrially synthesised fertilizer
D. By denitrification
Answer» E.
66.

Plant bends towards the source of light on account of the movement of curvature known as

A. geotropism
B. thigmotropism
C. chemotropism
D. phototropism
Answer» E.
67.

Ptyalin is an enzyme produced in the

A. salivary glands
B. pituitary glands
C. thyroid glands
D. pancreas
Answer» B. pituitary glands
68.

Pollination by wind is called

A. anemophily
B. hydrophily
C. zoophily
D. entomophily
Answer» B. hydrophily
69.

Pollen grains in plants are produced in

A. roots
B. leaves
C. flower
D. stem
Answer» D. stem
70.

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

A. Potassium chloride
B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate
Answer» E.
71.

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
Answer» D. increase in the thickness of ozone layer in troposphere
72.

Plants receive their nutrients mainly from

A. chlorophyll
B. atmosphere
C. light
D. soil
Answer» E.
73.

Movement of cell against concentration gradient is called

A. osmosis
B. active transport
C. diffusion
D. passive transport
Answer» C. diffusion
74.

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
Answer» C. monocotyledons
75.

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
Answer» B. germination of pollen grains
76.

Organic Substances which, in very small amounts, control growth and development called

A. vitamins
B. hormones
C. enzymes
D. None of the above
Answer» C. enzymes