4. Why is transport of materials necessary in a plant or in an animal? Explain.
5. What will happen if there are no platelets in the blood?
6. What are stomata? Give two functions of stomata.
7. Does transpiration serve any useful function in the plants? Explain.
8. What are the components of blood?
12. Why is it necessary to excrete waste products?
13. Draw a diagram of the human excretory system and label the various parts.
Answers
Answer:
4 answer is
Explanation:
Transport of materials is necessary in both plants and animals as every cell needs a regular supply of nutrients and oxygen for releasing energy through respiration. The food that we eat is broken down into smaller components to be absorbed by the cells.
5 answer is
Platelets are responsible for clotting of blood. If there are no platelets, the blood would not clot in case of an injury. This will lead to excess blood loss and can even lead to the death of a person.
6 answer is
The two functions of stomata are: (i) Transpiration is possible through stomata, i.e., excess water loss from the plant. (ii) Absorption of water from the roots, when there is loss of water from the stomata creates an upward pull.
Answer:
no.5= when body have no platelets the blood cannot stop when any part cutoff
no.8 = there are 4 components of blood plasma,RBC,WBC, platelets