NCERT Solution: Plant Kingdom
NCERT Exampler
Male gametophyte of pteridophyte |
Male gametophyte of gymnosperm |
(i) Distinct male gametophyte may not be present. |
(i) Distinct male gametophyte is always present. |
(ii) Antheridium is present. |
(ii) Antheridium is absent. |
(iii) Male gametes are flagellated. |
(iii) Male gametes may or may not be flagellated
|
(iv) Male gametes need water as a medium to swim up to the female gamete. |
(iv) Male gametes reach the female gamete through pollen tube. Water is not required for this purpose. |
Female gametophyte of pteridophyte
|
Female gametophyte of gymnosperm |
(i) Distinct female gamete may not be present. |
(i) Distinct female gamete is always present. |
(ii) It is largely independent. |
(ii) Female gamete is not independent fromthe parent plant.
|
(iii) It is not enclosed in an ovule. |
(iii) It is enclosed in an ovule |