Chapter - 6
Life Processes
āĻীā§ąāύ āĻĒ্ā§°āĻ্ā§°িāϝ়া
EXERCISES:-
āĻŦ্ā§াā§াāĻŽ:-
1. The kidneys in human beings are a part of the system for
ā§§/ āĻŽাāύুāĻšā§° āĻŦৃāĻ্āĻāĻŦোā§° āĻŦ্āĻ¯ā§ąāϏ্āĻĨাāĻোā§° āĻāĻা āĻ ংāĻļā§° āĻŦাāĻŦে
(a) nutrition. (b) respiration. (c) excretion. (d) transportation.
(āĻ) āĻĒুāώ্āĻি। (āĻ) āĻļ্āĻŦাāϏ-āĻĒ্ā§°āĻļ্āĻŦাāϏ। (āĻ) āύিāώ্āĻাāĻļāύ। (āĻ) āĻĒā§°িāĻŦāĻšāĻŖ।
Answer:-
2. The xylem in plants are responsible for
⧍) āĻāĻĻ্āĻিāĻĻāϤ āĻĨāĻা āĻাāĻāϞেāĻŽā§° āĻŦাāĻŦে āĻĻাāϝ়ী
(a) transport of water.
(āĻ) āĻĒাāύী āĻĒā§°িāĻŦāĻšāĻŖ।
(b) transport of food.
(āĻ) āĻাāĻĻ্āϝ āĻĒā§°িāĻŦāĻšāĻŖ।
(c) transport of amino acids.
(āĻ) āĻāĻŽিāύো āĻāĻিāĻĄā§° āĻĒā§°িāĻŦāĻšāĻŖ।
(d) transport of oxygen.
(āĻ) āĻ āĻ্āϏিāĻেāύ⧰ āĻĒā§°িāĻŦāĻšāĻŖ।
Answer:-
3.The autotrophic mode of nutrition requires
ā§Š.āĻĒুāώ্āĻিā§° āĻ āĻোāĻ্ā§°āĻĢিāĻ āϧ⧰āĻŖā§° āĻĒ্ā§°āϝ়োāĻāύ
(a) carbon dioxide and water.
(āĻ) āĻাā§°্āĻŦāύ āĻĄাāĻ āĻ āĻ্āϏাāĻāĻĄ āĻā§°ু āĻĒাāύী।
(b) chlorophyll.
(āĻ) āĻ্āϞ’ā§°’āĻĢিāϞ।
(c) sunlight.
(āĻ) āϏূā§°্āϝ্āϝ⧰ āĻĒোāĻšā§°।
(d) all of the above.
(āĻ) āĻāĻĒā§°ā§° āϏāĻāϞোāĻŦোā§°।
Answer:-
4. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
ā§Ē) āĻĒাāĻā§°ুāĻেāĻā§° āĻাāĻি āĻাā§°্āĻŦāύ āĻĄাāĻ āĻ āĻ্āϏাāĻāĻĄ, āĻĒাāύী āĻā§°ু āĻļāĻ্āϤি āĻĻিāϝ়া āĻšāϝ়
(a) cytoplasm. (b) mitochondria. (c) chloroplast. (d) nucleus.
(āĻ) āĻাāĻāĻ’āĻĒ্āϞাāĻāĻŽ। (āĻ) āĻŽাāĻāĻ’āĻāĻŖ্āĻĄ্ā§°িāϝ়া। (āĻ) āĻ্āϞ’ā§°’āĻĒ্āϞাāώ্āĻ। (āĻ) āύিāĻāĻ্āϞিāϝ়াāĻ।
Answer:-
5. How are fats digested in our bodies? Where does this process take place?
ā§Ģ/ āĻāĻŽাā§° āĻļā§°ীā§°āϤ āĻā§°্āĻŦি āĻেāύেāĻৈ āĻšāĻāĻŽ āĻšāϝ়? āĻāĻ āĻĒ্ā§°āĻ্ā§°িāϝ়াāĻো āĻ’āϤ āϏংāĻāĻিāϤ āĻšāϝ়?
Answer:-
6. What is the role of saliva in the digestion of food?
ā§Ŧ) āĻাāĻĻ্āϝ āĻšāĻāĻŽāϤ āϞাāϞাā§° āĻূāĻŽিāĻা āĻি?
Answer:-
7. What are the necessary conditions for autotrophic nutrition and what are its by products?
ā§/ āĻ āĻোāĻ্ā§°āĻĢিāĻ āĻĒুāώ্āĻিā§° āĻŦাāĻŦে āĻĒ্ā§°āϝ়োāĻāύীāϝ় āĻā§°্āϤāϏāĻŽূāĻš āĻি āĻি āĻā§°ু āĻāϝ়াā§° āĻāĻĒāĻাāϤ āϏাāĻŽāĻ্ā§°ীāϏāĻŽূāĻš āĻি āĻি?
Answer:-
8. What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
ā§Ž) āĻā§°োāĻŦিāĻ āĻā§°ু āĻāύাā§°োāĻŦিāĻ āĻļ্āĻŦাāϏ-āĻĒ্ā§°āĻļ্āĻŦাāϏ⧰ āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ āĻি āĻি? āĻļ্āĻŦাāϏ-āĻĒ্ā§°āĻļ্āĻŦাāϏ⧰ āĻāύাā§°োāĻŦিāĻ āĻĒāĻĻ্āϧāϤি āĻŦ্āĻ¯ā§ąāĻšাā§° āĻā§°া āĻিāĻুāĻŽাāύ āĻীā§ąā§° āύাāĻŽ āϞিāĻা।
Answer:-
9. How are the alveoli designed to maximise the exchange of gases?
⧝) āĻেāĻā§° āĻŦিāύিāĻŽāϝ় āϏ⧰্āĻŦাāϧিāĻ āĻā§°িāĻŦ āĻĒā§°াāĻৈ āĻļ্āĻŦাāϏāύাāϞীāĻŦোā§° āĻেāύেāĻৈ āĻĄিāĻাāĻāύ āĻā§°া āĻšৈāĻে?
Answer:-
10. What would be the consequences of a deficiency of haemoglobin in our bodies?
ā§§ā§Ļ) āĻāĻŽাā§° āĻļā§°ীā§°āϤ āĻšিāĻŽ’āĻ্āϞāĻŦিāύ⧰ āĻ āĻাā§ą āĻš’āϞে āĻি āĻĒā§°িāĻŖāϤি āĻš’āĻŦ?
Answer:-
11. Describe double circulation in human beings. Why is it necessary?
ā§§ā§§) āĻŽাāύুāĻšā§° āĻŽাāĻāϤ āĻĻুāĻুāĻŖ āĻĒā§°িāϏāĻ্āĻাāϞāύ⧰ āĻŦā§°্āĻŖāύা āĻā§°া। āĻিāϝ় āĻĒ্ā§°āϝ়োāĻāύীāϝ়?
Answer:-
12. What are the differences between the transport of materials in xylem and phloem?
⧧⧍) āĻাāĻāϞেāĻŽ āĻā§°ু āĻĢ্āϞ’āĻāĻŽāϤ āĻĒāĻĻাā§°্āĻĨā§° āĻĒā§°িāĻŦāĻšāĻŖā§° āĻŽাāĻāϤ āĻĒাā§°্āĻĨāĻ্āϝ āĻি?
Answer:-
13. Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
ā§§ā§Š) āĻšাāĻঁāĻĢাāĻঁāϤ āĻĨāĻা āĻāϞāĻিāĻ ’āϞি āĻā§°ু āĻŦৃāĻ্āĻā§° āύেāĻĢ্ā§°āύ⧰ āĻাā§°্āϝ্āϝāĻāϞাāĻĒā§° āĻāĻ āύ āĻā§°ু āĻাā§°্āϝ্āϝāĻ্āώāĻŽāϤাā§° āϏৈāϤে āϤুāϞāύা āĻā§°া।
Answer:-
Type by - Pinku Moni bora .