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Which of the following crops helps in nitrogen fixation?

A. Rice

B. Wheat

C. Maize

D. Beans

Correct Answer :

D. Beans


Related Questions

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Oxygen transportation in human body takes place through
1) Blood
2) Lungs
3) Tissue
The correct sequence of transportation is

A. 1, 2 and 3

B. 3, 1 and 2

C. 2, 1 and 3

D. 1,3 and 2

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The acid that is secreted in the stomach is

A. HCI

B. H2SO4

C. H2CO3

D. HNO3

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Scrub jungle Is characterised by

A. heavy rainfall

B. no rainfall

C. poor rainfall

D. none of the above

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Agroecology relates

A. crops and productivity

B. crops and environment

C. crop productivity and physiology

D. crop resistance to climatic changes

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The spider spins its web from a liquid secreting from its

A. posterior silk gland

B. posterior abdomen glands

C. mouth

D. salivary glands

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The insects do not have blood pigments because

A. there is no blood

B. blood does not have a respiratory function

C. tissues have pigments

D. pigments are elsewhere

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The phenomenon of summer sleep by animals is called

A. hibernation

B. aestivation

C. laziness

D. lethargy

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Turner's syndrome is a disease caused by

A. bacteria

B. virus

C. fungus

D. chromosomal imbalance

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If a father has blood group A and the mother has blood group 0, which one of the blood groups may be found in their progeny?

A. A

B. AB

C. O

D. Both (a) and (c)

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The science dealing with diseases of plants is called

A. Plant anatomy

B. Plant ecology

C. Plant pathology

D. Plant morphology

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Blood of cockroach is

A. red

B. bluish

C. greenish

D. colourless

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The theory that believes that the first living organism came from another planet is known as

A. Catastrophism

B. Special creation

C. Organic evolution

D. Cosmozoic theory

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The layer of stagnant water in which light penetrates is called

A. Aphotic

B. Euphotic

C. Epilimnion

D. Disphotic

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Origin of species was published by

A. Lamarck

B. Weismann

C. de Vries

D. Charles Darwin

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The hormone that contains iodine is

A. Prolactin

B. Vasopressin

C. Thyroxine

D. Adrenalin

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Under the immunisation programme's Govt. of India is providing vaccination to prevent some vaccine-preventable diseases. Which of the following is NOT one of them?

A. Tuberculosis

B. Diphtheria

C. Tetanus

D. Plague

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A person with a blood group ____ is considered to be an universal donor.

A. A Positive

B. AB Positive

C. AB Negative

D. O Positive

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One of the following is called a feminine hormone. Which one is it?

A. Oestrogen

B. Testosterone

C. Pituitrin

D. Thyroxine

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The heart of the human embryo starts beating in the _____ week of its development.

A. second

B. third

C. fourth

D. first

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Veins carry blood

A. towards the heart

B. away from the heart

C. both to and from the heart

D. only around the heart

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Biocatalysts are

A. hormones

B. vitamins

C. enzymes

D. pheromones

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Pacemaker is the

A. Sinu-auricular node

B. Auriculo-ventricular node

C. Bundle of His

D. Purkinje fibres

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Which of the following is a disease of brain?

A. SARS

B. AlDS

C. Diabetes

D. Alzheimer's

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Development without fertilization is called

A. parthenogenesis

B. asexual reproduction

C. sporulation

D. budding

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Xerophthalmia is a deficiency disease. Deficiency of _________ causes it.

A. vitamin A

B. vitamin B

C. vitamin C

D. vitamin E

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In one minute normally the heart beats

A. 60 times

B. 80 times

C. 100 times

D. 72 times

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When one gene controls two or more different characters simultaneously, the phenomenon is called

A. Apomixis

B. Pleiotropy

C. Polyploidy

D. Polyteny

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Scurvy is prevented by vitamin

A. A

B. B

C. C

D. D

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The dinosaurs (terrible lizards) became very successful during

A. Palaeozoic era

B. Mesozoic era

C. Cenozoic era

D. Archaeozoic era

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The mode of nutrition in which particulate food is devoured is

A. holozoic

B. holophytic

C. saprophytic

D. parasitic