Tag: biology

Selaginella is a heterosporous pteridophyte that exhibits a seed-like habit and possesses a ligule, a small scale-like structure on its leaves.

Double fertilization, involving the fusion of one male gamete with the egg and another with the central cell, is a unique characteristic of angiosperms.

Angiosperm xylem typically contains both tracheids and vessels, which are essential for water transport.

Vessels and companion cells are characteristic features of the vascular tissue in angiosperms. Gymnosperms lack vessels and companion cells.

Angiosperms are defined as vascular plants that produce seeds enclosed within a fruit (flowering plants).

Secondary growth is characteristic of dicotyledonous angiosperms and gymnosperms. Riccia, Funaria, and Selaginella do not exhibit secondary growth.

Mango is a dicotyledonous plant. Coconut, sugarcane, and banana are monocots.

Dicotyledons are characterized by the presence of a tap root system, whereas monocots typically have fibrous root systems.

Double fertilization is a unique process exclusive to angiosperms, involving the fusion of one male gamete with the egg and another with the polar nuclei.

Angiosperms have the greatest extent of adaptation to various environments, allowing them to dominate almost all terrestrial ecosystems.