Question

1Что такое оплодотворение 2Где образуются половые клетки у цветковых растений 3Где в цветке образуются мужские половые клетки, а где женские 4Что такое опыление 5Что такое самоопыление, перекрестное опыление ​

Answer 1

1.оплодотвроение - процесс слияния яйцеклетки со сперматозоидом

2-3.У цветковых растений половые клетки образуются в цветке: мужские — в тычинках, а женские — в пестиках

4.Опыление - это перенос пыльцы от мужской части растения к женской части растения,

5.самоопыление-это форма опыления, при которой пыльца с одного и того же растения попадает на рыльце цветка

перекрестное опыление-это процесс переноса пыльцы из пыльника одного цветка на пестик другого

Answer 2

1. What is fertilization? Fertilization is the process by which male and female gametes (reproductive cells) fuse to form a zygote, which eventually develops into an embryo. In plants, fertilization occurs when the sperm cell from the pollen grain fuses with the egg cell in the ovule. This process is essential for sexual reproduction and the production of offspring with genetic variation [[1]].

2. Where are the sex cells formed in flowering plants? In flowering plants, the sex cells, also known as gametes, are formed in specialized structures called anthers and ovaries. Anthers are part of the male reproductive organs, called stamens, and they produce pollen grains. Ovaries, on the other hand, are part of the female reproductive organs, called carpels, and they contain ovules [[2]].

3. Where are the male and female sex cells formed in a flower? In a flower, the male sex cells, or sperm cells, are formed in the anthers, which are located at the top of the stamens. The female sex cells, or egg cells, are formed in the ovules, which are located in the ovary at the base of the pistil [[3]].

4. What is pollination? Pollination is the transfer of pollen grains from the anther (male reproductive organ) to the stigma (female reproductive organ) of a flower. This transfer can occur within the same flower or between different flowers of the same or different plants. Pollination is a crucial step in the reproductive process of flowering plants, as it allows for the fertilization of the ovules and the production of seeds [[4]].

5. What is self-pollination and cross-pollination? - Self-pollination: Self-pollination occurs when the pollen from the anther of a flower is transferred to the stigma of the same flower or another flower on the same plant. This can happen through various mechanisms, such as wind, gravity, or self-fertilization. Self-pollination leads to the fusion of gametes from the same plant and results in offspring that are genetically identical or very similar to the parent plant [[5]]. - Cross-pollination: Cross-pollination occurs when the pollen from the anther of one flower is transferred to the stigma of a different flower, either on the same plant or on a different plant of the same species. This type of pollination promotes genetic diversity as it involves the fusion of gametes from different plants. Cross-pollination can be facilitated by various agents, including insects, birds, wind, or water [[6]].

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