"The Sun, Animals and Plants" PPT Courseware 2

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"The Sun, Animals and Plants" PPT Courseware 2

Although the sun is very far away from us, it is closely related to the life activities of animals and plants on the earth.

Question: Do you know the relationship between the sun and the life activities of animals and plants?

Plant germination requires suitable temperature, moisture, and light.

The sun provides two basic conditions.

The growth of plants relies on photosynthesis to provide most of the nutrients. Plants use carbon dioxide in the air and water absorbed from the roots to produce sugars under the action of chlorophyll, and sugars are the source of most life energy. Almost everyone knows this.

Question:

What role does the sun play in the life activities of plants?

1. The sun provides energy for photosynthesis of plants. The green leaves of plants rely on the energy in sunlight, carbon dioxide and water in the air to make nutrients and release oxygen at the same time.

2. The sun provides temperature for plant growth and development. The level of temperature also affects the transpiration of plants.

discuss:

If there is no sun, can plants complete these life activities? Why?

1. If there is no sunlight, plants cannot make their own nutrients and produce oxygen. Then the plants will continue to consume oxygen until the oxygen is used up, and finally the plants can only become extinct;

2. Without the sun, the temperature of the earth will drop and plants will remain dormant forever.

What factors are related to bird migration?

The reasons for bird migration are very complex. It is generally believed that this is an instinct of birds. This instinct not only has genetic and physiological factors, but is also the result of long-term adaptation to external living conditions, and is closely related to climate, food and other living conditions. changes are closely related.

The causes of bird migration are complex. It is now generally believed that bird migration is an adaptive behavior in response to periodic changes in environmental factors. Seasonal changes in climate are the main reason for the migration of migratory birds. Due to climate changes, food shortages often occur during the cold winters in the north and the dry seasons in the tropics, forcing some individuals in the bird population to migrate to other areas where food is abundant. This behavior was eventually fixed by the force of natural selection and became an instinct in birds.

In addition, factors that affect bird migration include sunlight time, temperature, and the birds’ internal physiological factors.

The light and warmth on the earth are sent by the sun. Without the sun, the earth would be dark and cold everywhere, without wind, snow, rain, dew, grass, trees, birds, animals, and naturally there would be no humans. In a word, without the sun, there would be no beautiful and lovely world of ours; without the sun, there would be no life on the earth.

Keywords: teaching courseware on the sun and animals and plants, download the science PPT courseware for the second volume of the sixth grade in the E-education edition, download the science slide courseware for the sixth grade, download the PPT courseware on the sun and animals and plants, .PPT format;

For more information about the "Sun, Animals and Plants" PPT courseware, please click on the "Sun, Animals and Plants" ppt tag.

"The Sun, Animals and Plants" PPT courseware:

"The Sun, Animals and Plants" PPT courseware All things grow dependent on the sun. The sun is the nearest star to the earth. Although it is far away from us, it has a very close relationship with all living things on the earth. The life of the sun and plants. Compare the pictures and talk about the role of the sun in plants...

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Update Time: 2024-11-23

This template belongs to science courseware E-education edition sixth grade science volume 2 industry PPT template

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