Question

Angiosperms and gymnosperm is

Answer 1

Answer:

Gymnosperm : Gymnosperm are woody trees with cone like appearance. They bear no flowers, no fruits but bear seeds. The seeds are naked as they are not covered by the fruit wall.

Examples: Pinus, Cycas and Cedrus trees.

1. In gymnosperms the reproductive structures are cones which are unisexual

2. The ovules are exposed, i.e., they are not located in the ovary.

3. After fertilization, the ovules develop into naked seeds.

4. The microspores and megaspores are produced by male and female cones

5. The pollen grains fall and germinate directly on the micropyle of the ovules

6. Fertilization is simple

7. Endosperm is haploid

8. In gymnosperms the pollination is by wind alone

9. In gymnosperms, generally the xylem contains only tracheids. Vessels are absent.

10. The phloem has no companion cells.

Angiosperms : The angiosperms consists of about 2, 50,000 species of herbs, shrubs and trees. The angiosperms are divided into two classes: Dicotyledons and Monocotyledons

Examples: Grass, Bamboo, Coconut tree.

In Angiosperms, the flowers are the reproductive organs and they may be both unisexual and bisexual.

2. The ovules are enclosed in the ovary.  

3. After fertilization, the ovules develop into seeds inside the fruit.

4. The microspores are produced in anthers while the megaspores are produced in ovules of the ovary in flowers

5. The pollen grains fall on the stigma, germinate and the pollen tube carries the male gamete to the ovary  

6. Fertilization is double

7. Endosperm is triploid

8. In angiosperms, different agents like wind, insects, bats etc are involved in pollination

9. Angiosperms vessels are always are present

10. Companion cells are present.

Answer 2

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Angiosperms: The flowering plants of the Kingdom Plantae are called the Angiosperms. They are the most diverse group of terrestrial- habitat plants. They are seed-producing plants.

Angiosperms: The flowering plants of the Kingdom Plantae are called the Angiosperms. They are the most diverse group of terrestrial- habitat plants. They are seed-producing plants. Monocotyledons: The monocotyledons, also referred to as monocots. They are flowering plants or Angiosperms, which produce seeds containing only one cotyledon. Legumes are the best examples of monocotyledons.

Angiosperms: The flowering plants of the Kingdom Plantae are called the Angiosperms. They are the most diverse group of terrestrial- habitat plants. They are seed-producing plants. Monocotyledons: The monocotyledons, also referred to as monocots. They are flowering plants or Angiosperms, which produce seeds containing only one cotyledon. Legumes are the best examples of monocotyledons.Dicotyledons: The dicotyledons, also referred to as dicots. They are flowering plants or Angiosperms, which produce seeds containing two cotyledons. Grains are the best examples of dicotyledons....