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4

The specific gravity of blood

A. lower than water

B. higher than water

C. same as water

D. many times that of water

Correct Answer :

B. higher than water


Related Questions

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Colour vision is made possible by the cells in the retina called

A. rods

B. cones

C. fovea

D. blind spot

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Kwashiorkar is characterised by

A. dermatitis, changes in hair pigments and retarded brain growth

B. excretion of creatine in excess

C. tyrosinosis and alcaptonuria

D. None of these

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Plants growing in sunlight are called

A. sciophytes

B. hydrophytes

C. xerophytes

D. heliophytes

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The condition in which there is abnormal decrease of white blood corpuscles is known as

A. leukaemia

B. leucoderma

C. leukopenia

D. anaemia

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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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Oxygen transport is a function of

A. white blood corpuscles

B. red blood corpuscles

C. blood platelets

D. plasma

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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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Blood plasma from which fibrinogen is removed is known as

A. serum

B. blood concentrate

C. lymph

D. antibody component

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In plants water is carried upwards by

A. phloem

B. paranchyma

C. xylem

D. meristem

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The latest drug for cancer is obtained from

A. Strychnos nuxvomica

B. Vinca rosea

C. Atropa belladona

D. Phyllanthus niruri

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Loss of blood is

A. clotting

B. receding

C. healing

D. drying up

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pH of blood remains constant due to

A. blood pressure

B. buffer action

C. perspiration

D. respiration

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The counting of RBC's can be performed by

A. Haemocytometer

B. Haemoglobinometer

C. Clinostat

D. Thermometer

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It is possible to produce seedless tomato fruits by

A. applying trace elements in tomato fields

B. spraying mineral solution on plants

C. spraying harmones on flowers

D. applying fertilizers containing radioactive elements

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Which of these is most consistently observed in Vitamin B12 deficiency?

A. Pigmentation of skin

B. Red, sore tongue with capillary atrophy

C. Megaloblastic anemia

D. Absence of tendon reflexes

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Green plants synthesise carbohydrates by the

A. holozoic method

B. holophytic method

C. saprophytic method

D. parasitic method

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Sexual selection theory was propounded by

A. Wallace

B. De Vires

C. Lamarck

D. Charles Darwin

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One of the following is often called the master gland. Which one is it?

A. Thymus

B. Islets of Langerhans

C. Pituitary

D. Thyroid

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Nekton are those organisms

A. which cannot be netted

B. which are independent of tides and waves

C. which have long necks

D. None of the above

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Lecuminous plants are recommended for rotation of crops because they

A. kill harmful insects

B. require little amount of water

C. help in Nitrogen fixation

D. are cash crops

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The function of ribosomes is

A. Secretion

B. Excretion

C. Power house of the cell

D. Protein synthesis

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The normal systolic blood pressure is

A. 140

B. 120

C. 180

D. 80

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Blood is

A. acidic

B. alkaline

C. neutral

D. like a buffer

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The disease in which blood clotting does not take place is known as

A. xerophthalmia

B. haemopoiesis

C. haemophilia

D. haemoerythrin

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Phenylketonuria is an example of an inborn error of metabolism. Thins error refers to

A. hormonal overproduction

B. atrophy of endocrine glands

C. inherited lack of an enzyme

D. nondisjuction of chromosomes

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Those small organisms which float on the surface of water are called

A. Necton

B. pH indicators

C. Plankton

D. Benthos

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Viruses have

A. DNA only

B. RNA only

C. Either DNA or RNA

D. Both DNA and RNA

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Vitamins A and C are predominantly present in

A. brinjal

B. lady's finger

C. potato

D. tomato

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In phototropism, auxins

A. Promote growth of cells

B. Inhibit cell division

C. Inhibit growth of cells

D. Stimulate differential growth of cells

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Intravascular clotting of blood is known as

A. anaemia

B. leucopenia

C. thrombosis

D. thrombin