The relationship between insects and plants and their role in coevolution

Plants rely on insects to spread pollen to pistils for insemination and provide nectar and pollen to attract insects. Insects such as butterflies and bees feed on nectar or pollen.

Insects have evolved special structures (such as the fluff on the feet of bees, the sacs that collect honey, the long curling mouthparts of butterflies) to suck nectar and pass pollen.

Flowers also evolve special structures (e.g., nectar at the bottom of a long flower, which butterflies can suck in with their long mouthparts) to adapt to insect dispersal and nectar collection.

The more classic ones are figs and ficus wasps, where the fertilized female fig wasps carry pollen, burrow into the female flowers closed by figs, reproduce the wasps in them and die. The newborn wasp burrows a small hole away from the fig and proceeds to the next round of reproduction.

Co-evolution. To such an extent that figs cannot be fertilized at all without figs, and without figs, female figs cannot lay eggs.

Two-way synergy: 1. Insects' choice of plants: cabbage insects especially like cruciferous plants, especially cabbage, and lay eggs on cabbage; The same is true for silkworms, which have developed a unique ability to identify mulberry leaf alcohol in mulberry leaves, so they only eat mulberry leaves, of course, if mulberry leaf alcohol is dropped on other leaves, it will also eat correctly;

2. The plant body also resists the damage of insects to varying degrees in various forms, but it is not all toxic substances to kill insects, but it is varied, some secrete unpleasant smells to drive away insects, some quickly make the tissues in the body hard, and insects are not easy to chew, some secrete juvenile hormones to delay the molting of insects, and some produce tannin to make it difficult for insects to digest their tissues, etc.;

3. For the influence of plants, insects have evolved new abilities, and some insects have been able to resist the adverse effects of certain chemicals, and even use toxic substances in plants as a tool to resist natural enemies.

Relatively speaking, in the synergistic process of plant and insect evolution, plants are still very passive and "kind", and promote the evolution of insects.

Rape flowers, radish flowers, etc., they bloom at about the same time as insects, because as soon as they bloom, the eggs of insects also hatch, and there are pumpkin flowers, camellias, etc., they are the same as bees and butterflies.

These flowers and some insects are an interdependent relationship, flowers need to rely on them to spread their own pollen, insects also rely on flowers to obtain the substances they need for survival, the two are inseparable, so the flowering time of these flowers is very same as the time of insect activity, and when these flowers bloom, insects can also be seen.

Insects can help the flowers of plants, and when the pollen is ripe, they can use the wind to spread it, and they can also help bring the pollen pistil to the stamens while the bees collect nectar, and they can bear fruit.

Plants and insects are interdependent and mutually beneficial. All ().

a.That's right. b.Mistake.

The answer is correct: a

If there is an interest in both, a mutually beneficial symbiotic relationship will be established.

Insects choose plants as food and growing places, and insects impart pollen to plants.

Plants need insect excrement as nutrients, and plants provide food for insects.

Insects protect plants, and plants feed back insects.

Plants can decompose insect residues.

Parasitic relationship between aphids and plants is mutually beneficial and symbiotic.

A mutually beneficial symbiotic system between cephalic moth insects and abacus plants.

Different plants are different, so it should be cooperative symbiosis.

Insects pollinate, and plants provide their habitat.

Plants provide nutrients, and insects protect plants.