Question

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Answer 1

Answer:

1.heart: pump the oxygenated blood through out the body and receive the deoxygenated blood from various prt of body

• 2. blood: transport oxygen nutrition CO2 and Nitrogenous waste
• 3.blood vessels: blood vessels, arteries and veins carry blood to all part of body

2. mammals and birds are warm blooded animal

which keeps their body temperature constant irrespective of their environment the leave .the process requires lot of oxygen for more cellular respiration. so the worm blood animal produce more energy to balance their body temperature

so it is necessary to separate oxygenated and deoxygenated blood.

3. there are two types of conducting tissue in highly organized plants

1. xylem : it contains water and minerals from roots to rest of the plant part

2. phloem : it contains food material from leaf to other parts of plant

4. xylem parts tracheil and vessels of roots stem and leaves are interconnected to form

continuous system of water conducting channel that reach all parts of plants .

5. food are transported in plants by special organ called phloem . phloem transport food material from leaf to different part of plants transportation of food in phloem is achieved by the expenditure of ATP9energy