4. Why is transport of materials IILUU
Explain.
5. What will happen if there are no platelets in the bla
6. What are stomata? Give two functions of stomata.
7. Does transpiration serve any useful function in th
8. What are the components of blood?
9. Why is blood needed by all the parts of a body?
. What makes the blood look red?
1. Describe the function of the heart.
Why is it necessary to excrete waste products?
Answers
Explanation:
Q5.) Platelets also known as thrombocytes perform primarily the function of clotting of blood.
If there are no platelets in the blood a coagulum or a clot will not form and hence this will result in unstoppable blood loss which will lead to ultimately death of an individual.
Q6.) There are small openings on the lower surface of leaves. These pores are known as stomata.
It helps in the transpiration of water.
Stomata is responsible for interchange of gases for respiration and photosynthesis.
Q8.) Plasma,Red blood cells,White blood cells are components of blood.
Q9.) blood carries oxygen to all parts of the body and carbon dioxide back to the lungs.
It carries digested food to various parts of body for absorption.
haemoglobin makes the blood look red.
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