"The survival of living things depends on a certain environment" PPT courseware

Description

"The survival of living things depends on a certain environment" PPT courseware

Part One: Memories and Thoughts:

1. What is environment? What is the relationship between organisms and the environment?

2. What are ecological factors?

3. What are the ecological factors in the environment?

4. What do abiotic factors include?

The survival of living things depends on a certain environment PPT, part 2: learning new knowledge

1. Without water, there would be no living things:

Can you give an example of what water does to living things?

Water is the main component of cells

Water is an essential nutrient for the human body

Water is the raw material for photosynthesis

Without water there is no life

2. Sunlight is the energy source of life

think:

1. In addition to water as a raw material, are there any other necessary conditions for photosynthesis?

2. Is light necessary only for plants?

3. Temperature limits the distribution of organisms:

Coniferous trees are suitable for living in the north, and broadleaf trees are suitable for living in the tropics. Which biological factors play a major role?

4. Organisms also affect each other (biological factors)

Including intraspecific relationships and interspecific relationships

1. Intraspecific relationship: refers to the relationship between different individuals or groups of organisms of the same species, including intraspecific mutual aid and intraspecific struggle.

2. Interspecific relationships: competition, symbiosis, parasitism, and predation

The survival of living things depends on a certain environment PPT, the third part of the courseware content: thinking and practice

1. In the following examples, which one is affected by light? ( )

A. Drought will cause plant leaves to wilt

B. The medicinal plant ginseng grows well in the shade.

C. In forests in warm zones, there are more broad-leaved forests.

D. Bananas, pineapples, etc. should not be planted in cold areas

2. Plants that like to live in a humid environment have generally large and thin leaves. Their main functions are ( )

A. Make full use of light energy B. Reduce sunlight exposure

C. Adapt to low temperature D. Adapt to humid environment

3. Masson pine forests in southern my country are often prone to serious pine hair insect pests; if masson pine and other tree species form mixed forests, the occurrence of pests and diseases can be reduced. This ecological benefit is brought about by the complex ( ).

A. Interspecific relationships B. Climatic conditions

C. Soil conditions D. Temperature conditions

Keywords: Beijing Normal University edition eighth grade biology PPT courseware for volume 2 free download, the survival of living things depends on a certain environment PPT download, .PPT format;

For more information about the PPT courseware "Ecosystems and Their Stability, the Survival of Organisms Depends on a Certain Environment", please click the Ecosystem and Its Stability ppt, The Survival of Organisms Depends on a Certain Environment ppt tag.

"The survival of living things depends on a certain environment" PPT:

"The survival of living things depends on a certain environment" PPT Part 1 content: New lesson introduction What environment do goldfish and cacti live in? What would happen if their living environments were reversed? What does this mean? Learning Objectives 1. Give an example...

File Info

Update Time: 2024-11-23

This template belongs to biology courseware Beijing Normal University Edition Eighth Grade Biology Volume 2 industry PPT template

Preview