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4

The association between leguminous plants and bacteria is

A. parasitic

B. saprophytic

C. symbiotic

D. None of the above

Correct Answer :

C. symbiotic


Related Questions

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4

What are the symptoms of retinal deficiency?

A. Dry skin

B. Rough skin

C. Night blindness

D. Sensitiveness to light and ulcers

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Formation of blood

A. Histolysis

B. Histogenesis

C. Haemopoiesis

D. Haemolysis

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4

Fusarium causes the wilting of the cotton plants by

A. clogging the vessels

B. producing toxic substance

C. causing necrosis of roots

D. killing the leaves

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4

Typhoid is a disease caused by

A. virus

B. bactena

C. fungus

D. animal

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Fibrinogen is present in

A. lymph

B. liver

C. blood plasma

D. pancreas

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The 'mad-cow disease' (Jakob-Creutzfeldt disease) is produced by certain

A. bacterium

B. virus

C. viroid

D. prion

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The grouping o( blood is based on substances called

A. antibodies

B. antigens

C. antitoxin

D. enzymes

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Biocatalysts are

A. hormones

B. vitamins

C. enzymes

D. pheromones

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Foal' is the young on of the

A. Cat

B. Lion

C. Tiger

D. Horse

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Chlorosis is the phenomenon where leaves have

A. more chlorophyll

B. less chlorophyll

C. no chlorophyll

D. patches of chlorophyll

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4

The radicle of the seeding always grows

A. towards the gravity

B. away from gravity

C. neutral to gravity

D. towards light

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4

The acid that is secreted in the stomach is

A. HCI

B. H2SO4

C. H2CO3

D. HNO3

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4

Man has ____ pairs of salivary glands.

A. 3

B. 4

C. 6

D. 8

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Haemophllia is a genetic disorder which leads to

A. decrease in haemoglobin level

B. rheumatic heart disease

C. increase in haemoglobin level

D. non-clothing of blood

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The enzyme that is necessary to bring about clotting of blood is

A. peptidase

B. amylase

C. lipase

D. thrombokinase

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Food substances are substances by

A. hormones

B. enzymes

C. vitamins

D. zymogens

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Two tall plants, each being a hybrid and carrying a recessive factor for dwarfness are crossed. What proportion of their offspring will be dwarf?

A. 0.5

B. 0.25

C. 0.75

D. 1

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The specific gravity of blood

A. lower than water

B. higher than water

C. same as water

D. many times that of water

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4

The function of a cell wall is

A. to give definite shape to the cell

B. to provide mechanical strength and protection to the cell

C. to prevent the cell from desiccation

D. All the above

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4

The mouth of a river opening into the sea is termed as

A. shore line

B. littoral zone

C. continental shelf

D. estuary

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The drug Ergot is obtained from

A. Alga

B. Fungus

C. Bacteria

D. Virus

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Nephrons are found inside

A. Liver

B. Lung

C. Brain

D. Kidneys

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Maintenance of pregnancy is under the control of

A. follicular stimulating hormone

B. growth hormone

C. estrogen

D. progesterone

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Blood plasma from which fibrinogen is removed is known as

A. serum

B. blood concentrate

C. lymph

D. antibody component

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4

Hormone promoting maleness in flowering plants is

A. Indole Acetic Acid

B. Kinetin

C. Cytokinin

D. Gibberellin

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4

Eye is an organ that can be called as

A. Phonoreceptor

B. Thigmoreceptor

C. Photoreceptors

D. Rheoreceptor

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4

Biological control is to check growth of

A. plants

B. animals

C. weeds

D. one pest by another

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4

Which among the following may carry rabies?

A. Cat

B. Dog

C. Fox

D. All the three

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4

Name the nematode which lives in lymph vessels of man.

A. Ascaris

B. Hook worm

C. Filarial worm

D. Guinea worm

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Which one of the following is essential for blood clotting?

A. RBC

B. WBC

C. Blood platelets

D. Lymph