plant reproduction

Article Catalog

1. Plant classification

2. Asexual reproduction

3. Sexual Reproduction

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Plant reproduction is divided into asexual reproduction and sexual reproduction. Asexual reproduction refers to a method of reproduction without the combination of male and female reproductive cells, which can preserve traits and is meaningless for biological evolution. Sexual reproduction refers to the reproductive method in which male and female reproductive cells combine to develop into new individuals. This reproductive method can maintain the characteristics of the parents and is of great significance to biological evolution. Generally, algae and ferns reproduce asexually.

1. Plant classification

1. Plant classification

Plants are mainly divided into four major categories, namely algae, bryophytes, ferns and seed plants. Algae plants do not have rhizome and leaf differentiation, bryophytes have rhizome and leaf differentiation, ferns have rhizome and leaf differentiation, seed plants can be divided into angiosperms and gymnosperms, and seed plants have rhizome and leaf differentiation. Different plant types have different structures and thus different reproductive methods.

2. Asexual reproduction

Asexual reproduction refers to the reproduction method without the combination of reproductive cells of both sexes. In a sense, it is regarded as replication. There is no difference between the parent and the offspring. Asexual reproduction is also divided into budding reproduction and vegetative reproduction. Among them, ferns all reproduce asexually through spores. After the plant matures, the spores of the plant's reproductive cells develop into new individuals, which can completely maintain the shape of the previous generation. The reproductive method of algae plants is fission reproduction in asexual reproduction. The mother body splits into two new individuals. This way, the traits can be preserved and has no meaning for biological evolution.

3. Sexual Reproduction

Sexual reproduction refers to the reproductive method in which male and female germ cells combine to develop into new individuals. This reproductive method can maintain the traits of the parents and has an important impact on biological evolution. Of great significance. After the plant blooms, the pollen in the anthers falls onto the stigma of the pistil and germinates on the stigma to form two pollen tubes. The pollen splits into two sperm. The sperm combines with the egg cell to form a fertilized egg. The fertilized egg develops into an embryo. The fertilized polar nuclei form the endosperm.

2. Asexual reproduction

3. Sexual Reproduction

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