Multiple Choice Questions

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The granulocytes which secretes histamine, serotonin and heparin are

  • Neutrophilss

  • Basophils

  • Eosinophils

  • Lymphocytes

  • Lymphocytes


B.

Basophils

Basophils secretes histamine, serotonin and heparin.


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The collagenous connective tissue layer holding the muscle bundles together is 

  • Pleura

  • Pericardium

  • Sarcolemma

  • Fascia

  • Fascia


The central hollow portion of the human vertebra is called

  • Acromion

  • Centrum

  • Neural canal

  • Sternum

  • Sternum


The main function of the lacteals in the villi of human small intestine is to absorb 

  • Fat globules

  • Water and mineral salts

  • Amino acids

  • Glucose and amino acids

  • Glucose and amino acids


Excretory structures in Rotifers are

  • Green glands

  • Malpighian tubules

  • Flame cells

  • Gills

  • Gills


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Many fresh water animals cannot live for long in sea water mainly because of the

  • Change in the atmosphere

  • Change in the levels of thermal tolerance

  • variations in light intensity

  • Osmotic problems they would face

  • Osmotic problems they would face


In a cardiac cycle, if the stoke volume is 70 ml and heart rate is 72 beats/minute, then cardiac output is

  • 142 ml/minute

  • 72 ml/minute

  • 1070 ml/minute

  • 70 ml/minute

  • 70 ml/minute


This hormone reduces cellular glucose uptake and utilization

  • Glucagon

  • Insulin

  • Aldosterone

  • Thymosin

  • Thymosin


Choose the wrong statement regarding human blood and circulatory system

  • Persons with blood group AB can receive blood from any person with any blood group

  • Calcium ions play an important role in blood clotting

  • Angina is acute chest pain when enough oxygen does not reach the brain

  • In a myogenic heart the normal activities are regulated intrinsically

  • In a myogenic heart the normal activities are regulated intrinsically


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Water pollinated plants have

  • Bright colour

  • Fragrance

  • Nectar

  • Tassels

  • Tassels