What are Gymnosperms??
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WHAT ARE GYMNOSPERMS?
- Gymnosperms are mostly evergreen, perennial and woody plants.
- Their stems are without branches.
- These are the plants which bear male and female flowers on different sporophylls of the same plant.
- Seeds of these plants do not have natural coverings i.e these plants do not form fruits and are therefore called gymnosperms.
- Examples: Cycas, Picea, Thuja, Pinus,etc.
More about:
Classification of plants
Criteria for classification:
- Presence or absence of organs like roots, stem, leaves and flowers.
- Presence or absence of seperate conducting tissues for conduction of water and food.
- Presence or absence of seeds
- Whether the seeds are enclosed in the fruits or not.
At a higher level of plant classification, different characteristics are considered for classification. Example: Depending upon the absence or presence of flowers, fruits and seeds plants are classified as cryptogams or phanerogams.
Depending upon whether seeds are enclosed within a fruit or not, phanerogams are classified as gymnosperms or angiosperms.
Angiosperms are further classified as monocots and dicots depending on the number of cotyledons in seeds.
ash9630:
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Answer:
Gymnosperm
Explanation:
Gymnosperms are seed-bearing vascular plants, such as cycads, ginkgo, yews and conifers, in which the ovules or seeds are not enclosed in an ovary.
The word "gymnosperm" comes from the Greek word gymnospermos, meaning "naked seeds".
Example
Cycads.
Gnetophytes.
Ginkgo.
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