Answer: Isogamy.
- A Isogamy
- B Anisogamy
- C Oogamy
- D Zoogamy
Correct answer: A. Isogamy
Explanation: When the fusing gametes look alike it is isogamy; when they differ in size it is anisogamy, and a large egg with small sperm is oogamy.
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.