The term Angiosperm is derived from the Greek word Angelion means bottle or vessel and Sperma means seed by Paul Hermann in 1960. Angiosperms are also called flowering plants because of the presence of a Flower. The Angiosperms are also known as Fruiting plants as they produce seeds and fruits. The Angiosperms is the most diverse group that includes 64 orders, 416 families, and 3,000,000 species. Seed plants with sporophylls grouped into flowers and seeds generated inside fruits are known as angiosperms. They are the most evolved plants on the planet and make up the majority of the current vegetation. It includes trees, shrubs, vines, and herbs adapted to almost every kind of environment.
Angiosperms: Salient Features
1. They occur in ultimate environments on the earth
2. They are covered seed-bearing plants
3. Herbs, Shrubs, Trees, Twiners, Trailers, and Climbers among others make up the sporophytic plant body
4. The Gametophytic phase is highly contracted and only represented by a few cells. The free-living existence of gametophytes is absent
5. vascular tissue is well developed, xylem and phloem are present. The xylem contains tube-like structures that are vessels, tracheids, xylem parenchyma, and xylem fibers. Phloem contains a tube that is a sieve tube, companion cells, Phloem parenchyma, and Phloem fibers
Why are angiosperms so called?
ANS: The term ‘Angiosperm’ has been derived from a greek composite word (angeion-, “case” or “casing”, and Sperma, “seed”) which suggests “enclosed seeds”. Thus, angiosperms means those plants that produce seeds within an enclosure, i.e., they’re fruiting plants.
1-B 2-D 3-C 4-B 5-A 6-B 7-D
8-D 9-D 10-B 11-B 12-A 13-C 14-D