"Plants need water and inorganic salts to grow" PPT

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"Plants need water and inorganic salts to grow" PPT

Part One: Biological Exploration

(one)

Plants need water to live

Why do plants cannot live without water?

1. Water is the main component of plant cells.

2. Water is involved in plant photosynthesis, respiration and other life activities.

3. Water helps maintain normal body temperature and a certain posture of plants.

Biological Exploration (2)

plant water needs

Features

1. Do you think that a big tree and a small grass require the same amount of water in their lifetime?

Different plants have different water requirements.

2. Do corns have the same water requirements during the seedling stage and flowering and fruiting stages?

The water requirements of the same plant at different growth and development stages are also very different.

Biological Exploration (3)

The principle of water absorption and water loss in root cells

Plant growth requires water and inorganic salts PPT, part 2: practice

1. Among the root tips, the one with the strongest ability to absorb water is ( )

A. root crown

B． meristematic zone

C. elongation zone

D. Mature area

2. How water in the soil enters root hair cells ( )

A. Cell wall→cytoplasm→cell membrane→vacuole

B． Cell wall → cell membrane → cytoplasm → vacuole

C. Cell membrane → cell wall → cytoplasm → vacuole

D. Cytoplasm → cell membrane → cell wall → vacuole

3. Please infer that when a plant cell is in an environment with a high concentration of the surrounding solution, the changes that will occur in the vacuole are ( )

A. Zoom out b. swollen

C. Disappear D. normal

4. When eating tomatoes mixed with sugar in the summer, parents always leave the remaining tomato juice to their children because they love their children, thinking that the juice is the essence of nutrition. This view of parents ( )

A. Correct. Mixing tomatoes with sugar allows a large amount of nutrients to penetrate into the tomato cells.

B. Correct, tomatoes mixed with sugar taste good

C. Wrong, tomatoes mixed with sugar mainly exude inorganic salts

D. Wrong, the tomatoes mixed with sugar mainly exude water.

Plants need water and inorganic salts to grow PPT, part 3: Plants need inorganic salts to grow

Absorption of inorganic salts by roots

There are many kinds of inorganic salts in the soil. Plants need the most inorganic salts containing nitrogen, phosphorus and potassium.

In order for plants to grow well, fertilizers should be applied to the soil at the right time and in the right amount.

Reasonable fertilization:

a. According to the fertilizer requirements of crops, fertilize at the right time and in the right amount to make the plants grow vigorously and achieve the effect of low fertilizer and high efficiency.

b. Loose the soil and promote O2 respiration, thus promoting the absorption of essential mineral elements by the roots.

Plants need water and inorganic salts for growth PPT, Part 4: Self-evaluation:

1. Xiao Ming’s apples have lush branches, but the buds fall after they form. After Xiao Ming applied an appropriate amount of chemical fertilizer to the apple tree in a timely manner based on the biological knowledge he had learned, the buds no longer appeared, and they soon bloomed. May I ask what chemical fertilizer Xiao Ming applies: ( )

A.Nitrogen fertilizer B.Phosphate fertilizer C.Potassium fertilizer D.Nitrogen fertilizer and potassium fertilizer

2. The main part of plants that absorb water is ( )

A. Leaves B. bark c. petals d. root tip

3. During the tree planting process, in order to improve the survival rate of saplings, the measures that Uncle Wang should take are ( )

①Transplant with soil ②Remove some leaves and transplant

③Transplanting at noon in the scorching sun

A. ①③ B． ①② C． ②③

4. Plant life requires a variety of inorganic salts, among which the most required salts contain ( )

A. Inorganic salts of carbon, hydrogen, and oxygen B. Inorganic salts of calcium, iron and zinc

C. Inorganic salts of nitrogen, phosphorus and potassium D. Inorganic salts of phosphorus, sulfur and magnesium

5. Plants cannot live without water, and the reasons do not include ( )

A. The more water in the environment, the better the plants will grow.

B. Dry seeds must absorb enough water to germinate.

C. Plants need water for photosynthesis

D. Inorganic salts in the soil must be dissolved in water before they can be absorbed by the roots.

Keywords: Jiangsu Education Edition seventh grade biology PPT courseware free download, plant growth needs water and inorganic salt PPT download, .PPT format;

For more information about the PPT courseware "Green Plants Need Water and Inorganic Salts for Plant Growth in Their Lifetime", please click on the "Green Plants' Lifetime ppt Plant Growth Needs Water and Inorganic Salts" ppt tag.

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Update Time: 2024-09-07

This template belongs to biology courseware Jiangsu Education Edition Seventh Grade Biology Volume 1 industry PPT template

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