Chapter 8
āĻ āϧ্āϝাāϝ় ā§Ž
How do Organisms Reproduce?
āĻীā§ąāĻŦোā§°ে āĻেāύেāĻৈ āĻŦংāĻļāĻŦৃāĻĻ্āϧি āĻā§°ে?
EXERCISES
āĻŦ্ā§াā§াāĻŽ āϏāĻŽূāĻš
1. āĻāĻĻীāϝ়āĻŽাāύ ā§° āĻā§°িāϝ়āϤে āĻ āϝৌāύ āĻĒ্ā§°āĻāύāύ āĻšāϝ়
2. Which of the following is not a part of the female reproductive system in human beings?
⧍) āϤāϞ⧰ āĻোāύāĻো āĻŽাāύুāĻšā§° āύাā§°ী āĻĒ্ā§°āĻāύāύ āϤāύ্āϤ্ā§°ā§° āĻ ংāĻļ āύāĻšāϝ়?
3. The anther contains
3. āĻāύ্āĻĨাā§°āϤ āĻĨাāĻে
(b) ovules. (āĻĄিāĻŽ্āĻŦাāĻŖু।)
4. What are the advantages of sexual reproduction over asexual reproduction?
ā§Ē/ āĻ āϝৌāύ āĻĒ্ā§°āĻāύāύāϤāĻৈ āϝৌāύ āĻĒ্ā§°āĻāύāύ⧰ āϏুāĻŦিāϧা āĻি āĻি?
5. What are the functions performed by the testis in human beings?
ā§Ģ/ āĻŽাāύুāĻšā§° āĻ āĻŖ্āĻĄāĻোāώে āĻি āĻি āĻাāĻŽ āĻā§°ে?
6. Why does menstruation occur?
ā§Ŧ/ āĻāϤুāϏ্ā§°াā§ą āĻিāϝ় āĻšāϝ় ?
7. Draw a labelled diagram of the longitudinal section of a flower.
ā§) āĻĢুāϞ āĻāĻাā§° āĻĻীā§°্āĻাāϝ়িāϤ āĻ ংāĻļā§° āϞেāĻŦেāϞāϝুāĻ্āϤ āĻĄাāϝ়েāĻ্ā§°াāĻŽ āĻঁāĻিāĻŦ।
8. What are the different methods of contraception?
ā§Ž) āĻā§°্āĻāύিā§°োāϧ⧰ āĻŦিāĻিāύ্āύ āĻĒāĻĻ্āϧāϤি āĻি āĻি?
9. How are the modes for reproduction different in unicellular and multicellular organisms?
⧝) āĻāĻāĻোāώী āĻā§°ু āĻŦāĻšুāĻোāώী āĻীā§ąāϤ āĻĒ্ā§°āĻāύāύ⧰ āϧ⧰āĻŖ āĻেāύেāĻৈ āĻŦেāϞেāĻ āĻŦেāϞেāĻ?
10. How does reproduction help in providing stability to populations of species?
ā§§ā§Ļ) āĻĒ্ā§°āĻাāϤিā§° āĻāύāϏংāĻ্āϝাāĻ āϏ্āĻĨিāϤিāĻļীāϞāϤা āĻĒ্ā§°āĻĻাāύ āĻā§°াāϤ āĻĒ্ā§°āĻāύāύে āĻেāύেāĻĻā§°ে āϏāĻšাāϝ় āĻā§°ে?
Ans-
11. What could be the reasons for adopting contraceptive methods?
ā§§ā§§) āĻā§°্āĻāύিā§°োāϧāĻ āĻĒāĻĻ্āϧāϤি āĻ্ā§°āĻšāĻŖ āĻā§°াā§° āĻাā§°āĻŖ āĻি āĻš’āĻŦ āĻĒাā§°ে?