Question

Write about Gymnosperms?

Answer 1

The gymnosperms, also known as Acrogymnospermae, are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes. The term "gymnosperm" comes from the Greek composite word γυμνόσπερμος, meaning "naked seeds". The name is based on the unenclosed condition of their seeds.

Answer 2

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Subkingdom Phanerogamae➫ A division of plants comprising those having reproductive organs.

➧ It's Characteristics are:-▬▬▬▬▬▬▬▬▬▬▬▬⤵

◉ It contains plants that bears flowers & seeds.

◉ It possesses only vascular plants.

◉ True root system & leaves are present.

◉ Water is not required for fertilization.

◉ Multicellular sex organ are present.

◉ These are are Autotrophic.

➧ Subkingdom Phanerogamae is divided into Two Groups:-▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃⤵

❶❫ Gymnosperms:-▬▬▬▬▬▬▬▬▬▬☟

①❭ They do not produce flowers.

②❭ Seeds are naked.

③❭ Endoderm is haploid.

④❭ 0vules are not located in the 0vary.

⑤❭ Level of all evolution is primitive group of seed-bearing plant.

⑥❭ Xylem lacks vessels & Phloem lacks companion cell.

▶Ex:- Cycas & Pinus

❷❫ Angiosperms:-▬▬▬▬▬▬▬▬▬▬☟

①❭ They produce flower & seeds.

②❭ Seeds are enclosed by the fruit wall.

③❭ Endotherms is triploid.

④❭ 0vules are enclosed in the 0vary.

⑤❭ Level of evolution is highly evolved seed-bearing plant.

⑥❭ Xylem contains vessels & Phloem contains companion cell.

▶Ex:- Mustard Plant & Grasses

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