Some plants rely on insects to spread pollen, what do we call them?

Flowers adapted to insect pollination generally have the following characteristics:

1. Insect flowers have a special smell to attract insects. Different plants emit different odors, so the types of insects that tend to be attached are also different, some like aromatic and some like bad smells.

2. Most of the insect-borne flowers can produce honey. The nectar glands are either distributed in various parts of the flower or develop into special organs. Nectar is secreted and accumulates at the base of the flower or within the characteristic distance.

Exposed nectar is often concentrated by beetles, flies, short-snouted bees and moths; The nectar is hidden deep in the corolla and is mostly absorbed by long-snouting butterflies and moths. When insects collect nectar, pollen grains adhere to the insect body and are spread.

3. Another characteristic of insect-borne flowers is that the flowers are large and significant, and have a variety of bright colors. Generally, the flowers that bloom during the day are mostly red, yellow, purple and other colors, while the flowers that bloom at night are mostly pure white, and only nocturnal moths can identify and help pollination.

4. The structure of insect-borne flowers is often adapted to the relationship between pollinating insects, such as the size, body size, structure and behavior of insects, and the size, structure and position of nectar glands of flowers.

5. The pollen grains of insect-borne flowers are generally larger than those of wind-borne flowers; The outer wall of pollen is rough, often with spines; When the anthers crack, they are not blown away by the wind, but stick to the anthers; Insects are easy to touch when visiting flowers and collecting nectar, and attach to the periphery; The stigma of the pistil also has a lot of mucus secretion, and the pollen is stuck once it comes into contact; The amount of pollen is also far from being taught to be small.

It is the insect-borne flower that spreads pollen by insects.

It is the wind-borne flower that spreads pollen by the wind.

It is the seed plants that bloom.

Plants disperse pollen in the following ways:

1. Spread by water.

Coconut: Spread by water, when the coconut is ripe, the coconut fruit falls into the sea and drifts away with the sea.

Water lilies: The fruits of water lilies sink to the bottom of the water when they are ripe. When the peel rots, the seeds covered with a spongy outer seed coat float and float elsewhere.

2. Spread by small birds or other animals.

Cherries, wild grapes, wild ginseng: The seeds are eaten by small birds or other animals, and because they cannot be digested, they are excreted with feces and spread in all directions.

Pine nuts: They are taken away by squirrels when they store their winter food.

3. Rely on the wind to spread.

Red-skinned willow: It is the catkins that fly to spread the seeds far away.

4. There is also a method of mechanical transmission to brighten the seeds.

Impatiens: The fruit of the impatiens will bounce and shoot the seeds in all directions, which is the method of sowing seeds in the mechanical transmission hall.

There are also many legumes that use mechanical seed dispersal.

There are many types of insects that help spread pollen. The most typical and common ones are: bees, flies, butterflies, moths, noctuidaes, yellow wasps, beetles and many other small beetles.

In nature, not all flowers can spread pollen, and some of them need to rely on the help of insects to have a better effect, so what are the insects that spread pollen? Many insects can spread pollen, the main insects are moths, butterflies, bees, hummingbirds, etc., in addition to noctuidae, yellow-spotted wasps, golden turtles and butterflies, or beetles, mainly live on honey, these insects can spread pollen. In addition to this, there are some large birds, which can also spread pollen.

If insect pollination is used, and the results are not successful, it is still necessary to rely on manual pollination.

For example, bees, pink butterflies, etc.

Both bees and butterflies can help spread pollen.

There are two ways in which plants disperse pollen: self-pollination and cross-pollination.

1.Self-pollination: The process by which the mature pollen grains of a plant are transferred to the stigma of the same flower and can be fertilized and set fruit normally is called self-pollination. In production, pollination between the same plant and different flowers and the same variety is often regarded as self-pollination.

Such as rice, wheat, cotton and peaches.

2.Cross-pollination: Even if it is a hermaphroditic flower, under normal circumstances, the stamens of the same flower will not mature together, therefore, the pistil of the general flower receives the pollen of the other flower, which is cross-pollination.

In dioecious plants, the only way to produce unisexual flowers in monoecious plants is to carry out cross-pollination.

Such as rape, sunflower, apple tree, etc. are cross-pollinated plants.

Plants need to rely on the help of various external forces to spread pollen to the stigma of other flowers. Under natural conditions, cross-pollination relies mainly on insects or wind. Flowers that rely on insect pollination are called insect-borne flowers, such as apple blossoms.

Flowers that rely on wind pollination are called wind flowers, such as corn flower beds, where many kinds of flowers are grown. ）

Pollinators mainly include insects (including bees, beetles, flies and moths) and wind. Hummingbirds, bats and snails can also pollinate, and some plants pollinate through water.

There are two forms of pollination: self-pollination and cross-pollination. Pollination is a unique phenomenon of higher vascular plants, and male gametes are transported to female gametophytes through pollen tubes, so that plant fertilization is no longer mediated by water, which is of great significance for adapting to the terrestrial environment.

Plant pollination under natural conditions is mainly carried out with the help of wind and vector insects, and can also be achieved by artificial aid.