Points about gymnosperms atleast 6 points
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Gymnosperms are a group of plants with the following unique characteristics:
They do not have an outer covering or shell around their seeds.
They do not produce flower
They do not produce fruits.
They are pollinated by the wind.
Gymnosperms were the first plants to have seeds. They are often referred to as having naked seeds because they do not have flowers, and their seeds develop on the surface of the reproductive structures of the plants rather than being contained in a specialized ovary. These seeds are often found on the surfaces of cones and short stalks.
Gymnosperms, then, are all fruitless seed plants. And they are made up of a heterogeneous group of plants characterized by the production of naked seeds. Estimates form fossil records indicate that gymnosperms must have evolved approximately 300 million years ago from non-seed producing ancestors of the extinct division of Progymnospermophyta, which were fern-like in appearance.
They lack the folded, marginally-sealed carpels that characterize the flowering plants.
The pollen-receptive structures are the ovules rather than the stigmatic portion of the carpels.
Most gymnosperms lack vessels in their xylem (unlike flowering plants which have both vessels and tracheids), except for the gnetophytes, which have vessels.
They do not have an outer covering or shell around their seeds.
They do not produce flower
They do not produce fruits.
They are pollinated by the wind.
Gymnosperms were the first plants to have seeds. They are often referred to as having naked seeds because they do not have flowers, and their seeds develop on the surface of the reproductive structures of the plants rather than being contained in a specialized ovary. These seeds are often found on the surfaces of cones and short stalks.
Gymnosperms, then, are all fruitless seed plants. And they are made up of a heterogeneous group of plants characterized by the production of naked seeds. Estimates form fossil records indicate that gymnosperms must have evolved approximately 300 million years ago from non-seed producing ancestors of the extinct division of Progymnospermophyta, which were fern-like in appearance.
They lack the folded, marginally-sealed carpels that characterize the flowering plants.
The pollen-receptive structures are the ovules rather than the stigmatic portion of the carpels.
Most gymnosperms lack vessels in their xylem (unlike flowering plants which have both vessels and tracheids), except for the gnetophytes, which have vessels.
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The points about gymnosperms are as follows
1.These plants are most primitive plants
2.They bear seeds
3.The seeds produced are naled and are not enclosed within fruits
4.Plants are usually perennial,evergreen and woody
5.Sporophylls(spores bearing structures) are aggregated to form cones, which are separated into male and female cones.
6. Examples are Cycas, pinus(pine) and Cedrus(deodar)
1.These plants are most primitive plants
2.They bear seeds
3.The seeds produced are naled and are not enclosed within fruits
4.Plants are usually perennial,evergreen and woody
5.Sporophylls(spores bearing structures) are aggregated to form cones, which are separated into male and female cones.
6. Examples are Cycas, pinus(pine) and Cedrus(deodar)
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