Question

What are angiosperms?

Answer 1

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

➧ 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:- Mangoes & Apples

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Answer 2

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$\sf\pink{★<u>A</u><u>ngiospermae(angein- vessel ; sperma seed</u>}$

a) These are usually terrestrial & sporophytic.

b) Seeds are covered by fruit wall or pericarp.

c) Process of double fertilization is present.Fertilization occurs by siphonogamy ( by pollen tube formation).

d) The avory ripens into fruit which contains the seeds.

Angiosperms have been further divided into two classes:

1. Dicotyledons ( with one cotyledon) e.g. Pea, gram.
2. Monocotyledons ( with one cotyledon) e.g. Wheat, rice etc.

★ other Examples :-

Mustard, Cactus, Guava, Mango, Rose, Onion, Calotrops, Nerium & Pipal.