Experiments that prove that only stamens and pistils of a flower are directly related to the formati

The pistil and stamens are the main structure of the flower, the pistil includes the stigma, the flower column, the ovary, the stamens include the anthers and the pai tung trace filament, the pollen is in the anthers, a flower must go through two processes of pollination and fertilization to bear fruit, and a flower dust does not go through pollination and fertilization, even if there is a pistil, it may not be able to develop into fruit

So the answer is:

Answer D analysis: This question examines the knowledge points related to the process of flowering and fruiting, and answers the question accordingly Answer: After the flowering of green plants, the anthers of the stamens contain many pollen grains, the ovary of the pistil contains ovules, the stamens and pistils have a direct relationship with the formation of fruits and seeds, and are the main structure of the flower

Therefore, after a flower goes through the process of pollination and fertilization, the ovary of the pistil continues to develop, and finally develops into fruit

According to the condition of the pistil and stamens, the flower can be divided into two kinds: in a flower, the stamens and pistils exist at the same time, which is called a hermaphroditic flower, such as the flower of peach and silver envy wheat A flower with only stamens or only pistils is called a unisexual flower, such as pumpkin, the flower of the silk melon So it is wrong for every flower to have stamens and pistils

So the answer is:

According to the presence or absence of stamens and pistils, flowers or potatoes can be divided into hermaphroditic flowers and unisexual flowers A flower species that has both stamens and pistils is called a hermaphroditic flower, such as: peach blossom, lily, etc. A flower with only stamens or pistils in a flower is called a unisexual flower, such as cucumber, pumpkin, loofah, poplar, willow, etc

So the answer is:

According to the presence or absence of stamens and pistils, flowers can be divided into hermaphroditic flowers, unisexual flowers and asexual flowers. Flowers with only pistils or stamens in a flower are called unisexual flowers, such as: cucumber flowers; Flowers without stamens and pistils are called asexual flowers, so all plant flowers have both stamens and pistils.

So the answer is:

1) The pistil is composed of anthers and filaments, the pistil is composed of stigma, columella and ovary, and the stamens and pistils are directly related to the formation of the fruit and the seeds, so the stamens and pistils are the main parts of the flower

2) In order for fruit trees to bear fruits and seeds, they generally need to go through the four stages of flowering, pollination, fertilization, and fruiting After pollination and fertilization, the [5] ovary of the pistil will further develop into fruit, among which the imitation [6] ovule develops into seeds, and the ovary wall develops into a peel that protects the seeds;

3) After a flower is pollinated and fertilized, the fertilized egg develops into an embryo, which is the main structure of the seed and the larvae of a new generation of plant bodies

4) A flower can only bear fruit after pollination and fertilization, and the citrus fruiting rate is significantly higher after the farmer stockpiles bees in the orchard, because the bees can help the fruit trees pollinate better

So the answer is: (1) pistil; Stamen;

2) pollination; Fertilization; Outcome; Ovary; Ovule.

3) Fertilized eggs.

4) Pollination.