"The Relationship between Organisms and the Environment" Understanding the Biosphere PPT Courseware

Description

"The Relationship between Organisms and the Environment" Understanding the Biosphere PPT Courseware

teaching objectives:

1. Give examples of ecological factors that affect the survival of living things.

2. Give examples to illustrate the close connection between living things.

3. Experience the general process of inquiry, imitate and control experimental variables and design controlled experiments.

4. Describe the adaptation and impact of organisms on the environment

5. Develop feelings of love and care for experimental animals. Able to observe and record carefully.

What to understand in this section

1. What is the biosphere?

2. What are ecological factors?

3. What factors in the environment affect the life and distribution of organisms? for example.

4. Can living things affect and change the environment? for example.

5. How do organisms adapt to their environment? for example.

1. Think about it: What are the abiotic and biotic factors that affect wheat life? (Book P13 Books 1-12)

Abiotic factors: water, soil, light, air, temperature, etc.

Biological factors: pests, beneficial insects, rats, snakes, earthworms, etc.

2. What environmental conditions are required for the normal growth of wheat?

Sunlight, water, air, nutrients, suitable temperature, a certain living space, other organisms, etc.

General steps of scientific inquiry (book P14)

Ask the question: How does light affect the life of the Rat Woman?

Make a hypothesis: Light affects the life of the Rat Woman!

Make a plan: Determine the use of experimental methods (book P14)

Implementation plan: experimental exploration and obtaining data (book P15)

Draw conclusions: Analyze data and draw conclusions

What is predation? The phenomenon of one organism feeding on another.

Competition: Two organisms live together and compete with each other for resources, space, etc. Example:

1) Rice and barnyard grass: compete for sunlight, nutrients and water

2) Mus musculus and Rattus norvegicus: compete for shelter and food

Features:

The closer the living environment and living habits are, the more intense the struggle between species.

Parasitism: Two organisms live together, one benefits and the other suffers, and the latter provides nutrients and a place to live to the former.

Symbiosis: Symbiosis means that two organisms live together, depend on each other, and benefit each other; if separated, neither or one of them can survive independently.

practise

1. Decide whether the following statements are correct. Mark √ for correct answers and × for wrong answers.

(1) The environment of living things refers to the place where living things live. ( )

(2) The only abiotic factors are sunlight, temperature and water. ( )

(3) Living things are both affected by the environment and can also affect the environment. ( )

(4) There is only a competitive relationship between individuals of the same species. ( )

2. "The beauty of April in the world is gone, and the peach blossoms in the mountain temple are beginning to bloom." Can you give a scientific explanation to the phenomenon described in this poem?

Describe the effect of temperature on plant growth

3. "Cows like to eat clover; clover depends on bumblebees for pollination; voles eat the honey and larvae of bumblebees and destroy the bumblebee nests; cats prey on voles, so cattle farmers love to raise cats." This is a creature described by Darwin. The relationship between. (1) Please use diagrams to show the relationship between the above organisms. (2) If there are fewer cats, what impact will it have on the clover?

4. Have you seen the butterfly in the picture on the right? The body color of this butterfly is basically the same as the color of the surrounding fallen leaves. What does this mean for its survival?

Saw it. Helps it find food and escape predators.

5. Cashmere is thin and soft, and the products woven into it are very expensive. Goats are easier to raise than sheep because they eat them right down to the roots. So some pastoral areas raise a large number of goats. What impact will this have on the environment?

Goats eat grass roots, affecting the growth of grass. If too many goats are kept, pasture vegetation will be destroyed.

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Update Time: 2024-07-11

This template belongs to biology courseware People's Education Edition seventh grade biology volume 1 industry PPT template

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