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Nov 6
1. Reproduction:
- Coniferophyta: Conifers reproduce through the production of cones, which contain seeds. The male cones produce pollen, which is carried by the wind to fertilize the female cones.
- Angiospermatophyta: Angiosperms reproduce through flowers, which contain both male and female reproductive organs. Pollination occurs when pollen is transferred from the male reproductive organs to the female reproductive organs, either by wind, insects, or other animals.
2. Seeds:
- Coniferophyta: Conifers produce seeds that are naked and not enclosed within a fruit. The seeds are typically found within the cones.
- Angiospermatophyta: Angiosperms produce seeds that are enclosed within a fruit, which develops from the ovary of the flower after fertilization.
3. Leaves:
- Coniferophyta: Conifers have needle-like or scale-like leaves that are usually evergreen.
- Angiospermatophyta: Angiosperms have a wide variety of leaf shapes and sizes, and they can be either deciduous or evergreen.
4. Vascular system:
- Coniferophyta: Conifers have a well-developed vascular system with xylem and phloem for the transport of water, nutrients, and sugars.
- Angiospermatophyta: Angiosperms also have a well-developed vascular system with xylem and phloem, but they have more complex structures such as vessels and companion cells.
5. Diversity:
- Coniferophyta: Conifers are a relatively small group of plants, with around 700 species, and they are mostly found in temperate and boreal regions.
- Angiospermatophyta: Angiosperms are the most diverse group of plants, with over 300,000 species, and they are found in a wide range of habitats worldwide.
- Coniferophyta: Conifers reproduce through the production of cones, which contain seeds. The male cones produce pollen, which is carried by the wind to fertilize the female cones.
- Angiospermatophyta: Angiosperms reproduce through flowers, which contain both male and female reproductive organs. Pollination occurs when pollen is transferred from the male reproductive organs to the female reproductive organs, either by wind, insects, or other animals.
2. Seeds:
- Coniferophyta: Conifers produce seeds that are naked and not enclosed within a fruit. The seeds are typically found within the cones.
- Angiospermatophyta: Angiosperms produce seeds that are enclosed within a fruit, which develops from the ovary of the flower after fertilization.
3. Leaves:
- Coniferophyta: Conifers have needle-like or scale-like leaves that are usually evergreen.
- Angiospermatophyta: Angiosperms have a wide variety of leaf shapes and sizes, and they can be either deciduous or evergreen.
4. Vascular system:
- Coniferophyta: Conifers have a well-developed vascular system with xylem and phloem for the transport of water, nutrients, and sugars.
- Angiospermatophyta: Angiosperms also have a well-developed vascular system with xylem and phloem, but they have more complex structures such as vessels and companion cells.
5. Diversity:
- Coniferophyta: Conifers are a relatively small group of plants, with around 700 species, and they are mostly found in temperate and boreal regions.
- Angiospermatophyta: Angiosperms are the most diverse group of plants, with over 300,000 species, and they are found in a wide range of habitats worldwide.
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Google Gemini AI
Nov 6
Coniferophyta (Gymnosperms)
- Reproduction:
- Seeds develop on the surface of cone scales (naked seeds).
- Pollen is transferred by wind.
- Ovules:
- Not enclosed in an ovary.
- Female cones contain ovules with a single integument.
- Embryo:
- Several cotyledons (seed leaves).
- No endosperm (nutritive tissue).
- Leaves:
- Typically evergreen with needle- or scale-like leaves.
- Resin ducts often present.
- Xylem:
- Tracheids present, but no vessels.
- Examples:
- Pine, fir, spruce, cedar, redwood
Angiospermatophyta (Flowering Plants)
- Reproduction:
- Seeds develop within an ovary (enclosed seeds).
- Pollination occurs through various means, including insects, wind, and birds.
- Ovules:
- Enclosed in an ovary with two integuments.
- Embryo:
- Two cotyledons or one cotyledon (monocots).
- Endosperm usually present.
- Leaves:
- Broad and flat, with various shapes and sizes.
- Stomata present on both sides of the leaf.
- Xylem:
- Tracheids and vessels present.
- Examples:
- All flowering plants, including roses, daisies, sunflowers, oaks, apples
- Reproduction:
- Seeds develop on the surface of cone scales (naked seeds).
- Pollen is transferred by wind.
- Ovules:
- Not enclosed in an ovary.
- Female cones contain ovules with a single integument.
- Embryo:
- Several cotyledons (seed leaves).
- No endosperm (nutritive tissue).
- Leaves:
- Typically evergreen with needle- or scale-like leaves.
- Resin ducts often present.
- Xylem:
- Tracheids present, but no vessels.
- Examples:
- Pine, fir, spruce, cedar, redwood
Angiospermatophyta (Flowering Plants)
- Reproduction:
- Seeds develop within an ovary (enclosed seeds).
- Pollination occurs through various means, including insects, wind, and birds.
- Ovules:
- Enclosed in an ovary with two integuments.
- Embryo:
- Two cotyledons or one cotyledon (monocots).
- Endosperm usually present.
- Leaves:
- Broad and flat, with various shapes and sizes.
- Stomata present on both sides of the leaf.
- Xylem:
- Tracheids and vessels present.
- Examples:
- All flowering plants, including roses, daisies, sunflowers, oaks, apples
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