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?
9. Why is blood needed by all the parts of a body?
10. What makes the blood look red?
11. Describe the function of the heart.
12. Why is it necessary to excrete waste products?
Answers
Answer:
4. transport in plants and animals because as it absorbs all the essential substances and transport them to all parts so that they reach each and every cell of the body . The water containing minerals is called cell sap is carried by xylem vessels to all parts of the body
5. If there are no platelets the blood would not clot in case of injury this will lead to access blood loss and can even lead to death of person
6. They are pore surrounded by specialized parenchymatic cell called guard cell . stomata have 2 main functions...i) they allow for gas exchange acting as an entry way for CO2 and releasing the O2 that we breath. ii) the other main function is regulating water movement through transpiration
7. transpiration serves very important function in plant .it is the loss of water through stomata it creates transpirational pull which is responsible for the rise of water to great height of trees and other plants or trees
8. components of blood are :- plasma , RBC , WBC , and platelets
9. blood brings oxygen and nutrients to all part of the body so they can keep working blood carries CO2 , and other waste materials to the lungs , kidneys , and digestive system to be removed from the blood .blood also fights infection and carries hormones around the body