How do animals help plants? How do animals help plants reproduce? Q: How does a plant develop from a seed?

fruits travel

Question: Try to explain why fruits have to travel.

Answer: if the fruits did not travel, then there would be no settling of plants on the Earth. Each type of plant would grow in only one place, and this is bad for plants, because if plants of one type suddenly disappeared in one place, then they will not be anywhere else. For natural communities, this is bad. (example: if wheat grew only in one country and nowhere else, then bread would not be known in other countries. Potatoes in Russia were not known until Peter the Great, and when tubers traveled to Russia, potatoes became the most beloved food product)

Let's discuss!

1. Question: is the seed a living or non-living body?

Answer: the seed is a living body, it breathes, contains the future plant.

2.Question: Plant seeds are usually stored in bags. Why don't the seeds germinate?

Answer: seeds in bags are usually stored in a dry place, and moisture is needed for seed germination.

3. Question: in the spring, beehives with bees are often taken out into flowering gardens. Why do they do it?

Answer: bees collect nectar from flowers, while pollinating flowers, the plant gets the opportunity to set fruits and form a shift.

Check yourself.

1. Question: how does pollination occur in plants?

Answer: in flowers, in addition to nectar, there is pollen - the smallest yellow grains. When an insect lands on a flower, pollen remains on its body. Flying to another flower of the same plant species, the insect involuntarily transfers pollen to it - it pollinates this flower

2. Question: what is formed in place of flowers after pollination?

Answer: after pollination, an ovary is formed in place of the flowers, from which the fruit with seeds then develops.

3. Q: How are plant fruits distributed?

Answer: fruits "travel":

With the help of the wind (fruits of maple, ash, dandelion);

With the help of animals and humans (they are attached to wool clothes with special hooks - burdock, string);

With the help of birds (a bird that has eaten fruits can leave undigested seeds along with droppings many kilometers from the place where it ate the fruit);

Cultural fruit travels at the will of man.

4. Question: what conditions are needed for seed germination?

Answer: Seeds need air, moisture and heat to germinate.

5. Question: how does a plant develop from a seed?

Answer: Stages of plant development: seed - embryo - sprout with root - sprout with stalk and leaves - adult plant with flowers - adult plant with fruits and seeds.

Homework assignment:

Task 3. Prepare a story about how animals help plants reproduce (pollinate flowers, distribute fruits).

Animals play an important role in the distribution of pollen, spores, seeds, fruits of plants, while influencing their reproduction and settlement. Animal activities are usually motivated by nutritional needs, but their use of seeds, fruits, and pollen for plants is beneficial, as it contributes to their distribution.

In the flora of the Earth, flowering plants occupy a dominant position, and the flowers of most species are pollinated by animals (more often by insects, less often by birds and mammals). Animals are attracted to the flowers by the food they find here (pollen, nectar), plants that have adapted to pollination by animals have bright petals or sepals, an attractive smell, and contain nectar.

In the next lesson

Question: remember the importance of plants for animals and humans. What plants do you know that are listed in the Red Book of Russia. What plants in your area need protection?

Answer: plants are a source of food and oxygen for animals and humans, without which life is impossible.

Plants of the Red Book of Russia: flat-leaved snowdrop, Martyanov's volodushka, cheerful colchicum, Fori rhododendron, walnut lotus, mountain peony, etc.

Plants of the Red Book of the Chelyabinsk region: astragalus, venus slipper, open urchin

Peony evasive (medicinal), violet Moritz, etc.

how animals help plants reproduce

Answers:

let's say)) do not strictly judge my imagination :)) In the early morning, a bee flew to work somehow - to collect pollen from flowers. One flower lured her with its variegated color and a bee flew to him. She collected pollen from all the pollen sacs and flew to another flower. And on the little body, particles of pollen got to her, which she transferred to another flower, thereby helping the first to multiply. :) We are talking about only one small bee, and yet each of them - out of 120,000 from one hive - flies every day to work, in search of pollen for making honey. And while hard-working bees are flying somewhere in the sky, some animal on earth - the same cow - has just eaten and wants to get rid of the "garbage" in the stomach a little, that is, go to the toilet, so to speak)) and now when the cow does her business, along with this, unprocessed flower seeds will come out of her, which she probably ate with grass)) then they remain in the ground and grow :) and cats during parties cling to all sorts of weeds, like thorns, and then this "garbage" simply subsides, clings to something else, and thus the seeds spread. Appreciate my work

Instruction

First of all, the help of animals lies in the processing of organic compounds created by plants. Through other links in the food chain, they convert them into inorganic substances, due to which plants can again and again create organic matter. Thanks to this, a natural cycle occurs in nature. That is why underestimation of the importance of animals for plants often leads to irreversible changes in natural biocomplexes.

Animals also contribute to the spread of some plants. Animals and birds, for example, carry spores and seeds of various representatives of the flora over long distances. This happens in many ways. First, they eat the fruits, the seeds of which subsequently fall into the ground along with waste products. Secondly, animals often simply cling spores to their fur, feathers, as a result of which they can fall to the ground many kilometers from their birthplace. Ants and rodents, for example, often lose grains and nuts in their pantries. Once in fertile soil, the grains germinate over time.

Insects are of great importance for the continuation of the life of flowers. Bees, bumblebees and butterflies, for example, not only collect nectar from flowers to produce honey, but also pollinate them. This mode of distribution is especially important for shrubs and flowers that are not pollinated by the wind.

Individual representatives of the animal world loosen the soil and fertilize it with the products of their vital activity. Thanks to this, plants grow much better and more abundantly. Such benefits are brought by worms, ants, various small rodents.

Animals also maintain a strict ratio of some plants in relation to others, which contributes to the preservation of the natural balance. This is achieved due to the fact that each animal species feeds on a certain type of plant. If this balance is disturbed, many plants can simply disappear from the face of the Earth, and with them the animals that fed on them.

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Instruction

How do animals help plants reproduce?

those who do it
Animals are one of the ways plants reproduce, as they can cross vast areas, move thousands of kilometers, thereby spreading plant seeds to adjacent territories.
so the first way is when the seeds are involuntarily attached to the animal's fur, and together they go to their new habitat. For example, burdock.
the second way is when the seeds eaten by birds or animals come out in the form of faeces. an example is an apple tree, a cherry, and I begin my life cycle already on a new earth.
In these answers, animals help plants not to multiply, but to settle: they spread already prepared seeds.
And assistance in reproduction is the promotion of the formation of fruits and seeds, i.e. pollination. Insects (bees, bumblebees, butterflies, wasps, beetles, etc.), some birds and bats carry pollen from flower to flower, carrying out cross-pollination. As a result, seeds are formed, with the help of which plants reproduce.
Almost all.
there is some kind of tree whose seeds can only germinate after they have been eaten by birds and passed through their digestive system. they have such a hard shell that otherwise they will not germinate
for example, take the same dog, she walks on the street, plays on the grass and plant seeds clings to wool

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