E. Short answer type questions
1. Why is transport of materials necessary in an animal?
2. What will happen if there are no platelets in the blood?
3. What are stomata? Give two functions of stomata.
4. What are the components of blood?
5. Why is it necessary to excrete waste products?
Answers
1. the transport of minerals is necessary in an animal as all the living beings such as plants and animals need nutrients and minerals in every part of their body for proper growth and survival.
2. if platelets are absent in the blood, a cogulum or blood clotting will not occur which results in tremendous blood loss from the body whenever one faces a minute cut or wound. lossing of huge amount blood may result in the death of the individual.
3. Stomata are the tiny pores on the surface of the leaves which helps in the process of transpiration.
the two functions of stomata are:-
• it helps in the transpiration of water from the plant.
• it is responsible for the exchange of gases for respiration and photosynthesis.
4. red blood cells, white blood cells, platelets and plasma
5. the excretion of the waste products is an important process as it protects the body from getting destroyed from the waste products produced during metabolic activities as they are toxic to the body and should not be accumulated inside.