Biology, asked by isoooo, 1 year ago

Describe the important characteristics of gymnosperms.

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Answers

Answered by Nereida
16

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  • They have naked seeds
  • Do not produce flowers
  • Do not produce fruits
  • Pollinated by wind
Answered by Anonymous
36

ANSWER

Important features of gymnosperms:

⏺️The term gymnosperms refers to plants with naked seeds (gymnos-naked,sperma-seeds), i.e., the seeds of these plants are not enclosed in fruits.

⏺️The plant-body ranges from medium to tall trees and shrubs. The giant redwood tree Sequoia is one of the tallest trees in the world.

⏺️The root system consists of tap roots. The coralloid roots present in Cycas are associated with nitrogen-fixing cyanobacteria.

⏺️The stem can be branched(as in Penus & Cedrus) or un-branched (as in Cycas).

⏺️The leaves can be simple (as in Penus) or compound(pinnate-in-Cycas). The leaves are needle-like, with a thickcuticle & sunken stomata. These help in preventing water loss.

⏺️Gymnosperms are heterosporous.They bear two kinds of spores- microspores & megaspores.

⏺️Flowers are absent. The microsporophylls and megasporophylls are arranged to form compact male & female cones.

⏺️Pollination occurs mostly through wind and pollen grains reach the pollen chamber of the ovule through the micropyle.

⏺️The male & female gametophytes are dependent on the sporophyte.

⏺️The seeds contain haploid endosperms & remain uncovered.

Hope it helps ☺️

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