What are the importance of seeds?
Seeds are of immense biological and economic importance. They contain high protein, starch and oil reserves that help in the early stages of growth and development in a plant. These reserves are what make many cereals and legumes major food sources for a large proportion of the world’s inhabitants.
What is spermatophytes in biology?
The spermatophytes (lit. seed-bearing plants), also known as phanerogams (taxon Phanerogamae) or phaenogams (taxon Phaenogamae), comprise those plants that produce seeds, hence the alternative name seed plants. They are a subset of the embryophytes or land plants.
What are the characteristics of spermatophytes?
General characteristics
- The plant has roots, stems, leaves and seed bearing structures.
- They produce seeds.
- They have chlorophyll hence photosynthetic.
- They have vascular tissue is highly developed with xylem tissue consisting of both xylem tissue and tracheids.
Are conifers spermatophytes?
Introduction to the Spermatophytes The spermatophytes, which means “seed plants”, are some of the most important organisms on Earth. Conifers are seed plants; they include pines, firs, yew, redwood, and many other large trees.
What is the role of the Spermatophyta plant?
Spermatophyta play an especially important role in the world’s plant cover and in man’s economic activity. Earlier, when the sexual process had not yet been sufficiently studied, Spermatophyta were called Phanerogamae, in contrast to spore plants, which were known as Cryptogamae.
Is the gametophyte reduced in the Spermatophyta?
In Spermatophyta the gametophyte, that is, the sexual generation, is reduced, especially in angiosperms, and develops on the sporophyte. Reproduction by seeds is progressive adaptation in comparison with reproduction only by spores.
Which is the fifth division of spermatophytes?
The fifth extant division is the flowering plants, also known as angiosperms or magnoliophytes, the largest and most diverse group of spermatophytes: Angiosperms, the flowering plants, possess seeds enclosed in a fruit, unlike gymnosperms.
Is the morphology of spermatophytes devoted to gymnosperms?
It is, then, with an anticipatory feeling of pleasure that one opens the first instalment of Messrs. Coulter and Chamberlain’s book on the morphology of the spermatophytes, seeing that it is entirely devoted to the gymnosperms. And it may at once be said that the authors have done their work well.