Archegonium is the female sex organ that produces the female gamete or egg. It is present in the life cycles of bryophytes, pteridophytes, and gymnosperms.

In bryophytes, the dominant phase in the life cycle is the ____ plant body but in pteridophytes, the main plant body is_____.

Gamete transfer take place through water in (A) monera, fungi, algae (B) algae, bryophytes, pteridophytes (C) bryophytes, pteridophytes, gymnosperm (D) pteridophyte, gymnosperms, angiosperms.

Write the names of male and female sex organs of angiosperms respectively:-

Which option is correct for statements - X and Y ? Statement - X : A large number of male gametes fail to reach the female gametes. Statement - Y : The number of male gametes produced is several thousand times the number of female gametes produced. (A) X and Y both are correct and Y is correct reason of X (B) X is correct and Y is wrong (C) Y is correct and X is wrong (D) X and Y both are correct and Y is not correct reason of X.

Which option is correct for statement - X and Statement - Y ? Statement - X : The sexual reproduction is characterized by the fusion of the male and female gametes of the species. Statement - Y : All sexually reproducing organisms show events and process which have fundamental similarity.

Given below are a few statements related to external fertilization. Choose the correct statements. (i) The male and female gametes are formed and released simultaneously. (ii) Only a few gametes are released into the medium. (iii) Water is the medium in a majority of organisms exhibiting external fertilization. (iv) Offspring formed as a result of external fertilization have better chance of survival than those formed inside an organism. (A) iii and iv (B) i and iii (C) ii and iv (D) i and iv