Answer: Angiosperms.
- A Bryophytes
- B Pteridophytes
- C Gymnosperms
- D Angiosperms
Correct answer: D. Angiosperms
Explanation: In angiosperms, the male gametophyte is just a pollen grain (2-3 cells) and the female gametophyte is the 7-celled embryo sac. This represents the maximum reduction of gametophyte in plant evolution.
Plants evolved from water-dependent algae through increasingly land-adapted groups, gaining vascular tissue (Pteridophyta), then seeds (Gymnosperms), and finally fruit-enclosed seeds (Angiosperms) - each step reducing dependence on water for reproduction.
Concept context
Classification of plants from algae to angiosperms. Understanding plant diversity is essential for NEET.