Biology · Exercise 1 of 3

Biology Biology - Section 1

61 questions
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Subject: General Knowledge
Topic: Biology
Exercise: Biology - Section 1
Questions: 61

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Question 51

Plants synthesis protein from

A starch

B sugar

C amino acids

D fatty acids

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Question 52

Plants absorb dissolved nitrates from soil and convert them into

A free nitrogen

B urea

C ammonia

D proteins

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Question 53

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

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Question 54

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

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Question 55

Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes

A tetanus

B influenza

C cholera

D typhoid

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Question 56

Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

A hormones

B enzymes

C proteins

D vitamins

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Question 57

Mutation is

A a factor responsible for plant growth

B a change which affects the offspring of F2 generation only

C a change that is inherited

D a change which affects the parents

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Question 58

Pollination by wind is called

A anemophily

B hydrophily

C zoophily

D entomophily

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Question 59

Pollen grains in plants are produced in

A roots

B leaves

C flower

D stem

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Question 60

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

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