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

Water pollinated plants have

• Bright colour

• Fragrance

• Nectar

• Tassels

• Tassels

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

The collagenous connective tissue layer holding the muscle bundles together is 

• Pleura

• Pericardium

• Sarcolemma

• Fascia

• Fascia

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

Excretory structures in Rotifers are

• Green glands

• Malpighian tubules

• Flame cells

• Gills

• Gills

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

The central hollow portion of the human vertebra is called

• Acromion

• Centrum

• Neural canal

• Sternum

• Sternum

The granulocytes which secretes histamine, serotonin and heparin are

• Neutrophilss

• Basophils

• Eosinophils

• Lymphocytes

• Lymphocytes