Transportation of substances in Animals and Plants

_________ an Australian biologist discovered blood groups between__________&___________

• Karl Huygens, 1911,1912

• Karl Landsteiner, 1901,1902

• Christiaan Huygens , 1656, 1657

• None of the above

State True or False/ Yes or No

Arteries have valves in it

(a)  

Amoeba excretes through _________

• Nephredia

• Diffusion

• Both a and b

• None of the above

Veins are ________ placed under the skin

• Superficially

• Deeply

• Both superficially and deeply

• Either superficially or deeply

A liquid in the blood vessel which contains 90% of water

(a)  

Red blood cells contain __________

• Oxyhaemoglobin

• Haemoglobin

• Either Oxyhaemoglobin / Haemoglobin

• Neither Oxyhaemoglobin nor Haemoglobin

• None of the above

Give one word answer

Arteries have thick and elastic walls. Justify the statement

(a)  

Capillaries help in _________

• Exchange of Blood

• Exchange of Nutrients

• Exchange of gases

• Either Exchange of Nutrients/Exchange of gases

Pulse is called as (a)   in ancient India

The warmer the air __________is the rate of Transpiration

• Higher

• Lower

• Medium

• None of the above