Question

characteristics of gymnosperms ​

Answer 1

•They do not have an outer covering or shell around their seeds.

•They do not produce flowers.

•They do not produce fruits.

•They are pollinated by the wind.

Answer 2

Answer :

Gymnosperms -

• Gymnosperms are type of plants in which ovules are not enclosed by ovary wall.
• The ovules remain exposed before and after the fertilisation.
• The seeds developed are naked.
• They include medium sized trees or tall trees and shrubs.
• The roots are generally tap roots.
• Some of them have association with fungi like Pinus.
• Stems are unbranched in some species like Cycas and branched in others like Pinus and Cedrus.
• The leaves are simple or compound.
• The plant body is differentiated into roots, stems, leaves and sporophytes.
• The gymnosperms, sequoia is said to be the tallest plant.
• The reproduction :

1. The Gymnosperms are heterosporous.
2. They produce haploid microspores and megaspores.
3. Some leaves are modified into sporophylls.
4. They are compactly and spirally arranged along on axis to form strobili.
5. The sporophylls bear sporangium in which spores are produced.