"Transportation Function" PPT

Description

"Transportation Function" PPT

Part One: Situation Import

The roots of plants are connected to the stems, and the leaves are attached to the stems and their branches. Therefore, the water and inorganic salts absorbed by the roots must be transported to the leaves and flowers through the stems. How are water and inorganic salts transported? What about the ones that go into leaves and flowers?

learning target

1. Name the parts of plant stems that transport water and inorganic salts.

2. Identify the distribution parts of xylem in the stem.

3. Determine the transport direction of water and inorganic salts in the stem.

Transportation role PPT, part 2 content: Exploration theme one

Water and inorganic salts absorbed by the roots are transported in the xylem

1. Which part of the plant absorbs water and inorganic salts?

2. Does the growth of leaves require water and inorganic salts? How do the water and inorganic salts absorbed by the roots reach the leaves?

Ask a question

Through what part of the stem are water and inorganic salts transported?

make assumptions

The entire structure of the stem is involved in transport. Either the outer bark of the stem is involved in transport, or the internal structures of the stem are involved in transport.

experimental design

What is your group’s research plan?

experiment procedure

Complete the experiment according to the experimental design

Transport function PPT, part 3 content: Discussion:

1. What does the fact that some structures inside the stem are dyed red indicate?

Tip: Water and inorganic salts are transported through the xylem of the stem

2. Name the transport path of water from the bottle to the leaves.

Tip: root → xylem of stem → leaves

Water absorbed by the roots is transported upward through the stems of the plant to leaves and other organs.

Use a scalpel to cut the stem transversely and longitudinally, use a magnifying glass to observe the cross-section and longitudinal section, and identify the parts of the stem that transport water and inorganic salts.

PPT on the role of transportation, part 4: training to meet standards

1. The transport direction of water and inorganic salts in plants is ( )

A. Transported from roots through stems to leaves and flowers

B. Transported from stomata through leaves and flowers to stems

C. Transported from stems to roots and leaves respectively

D. Transported from leaves through stems to roots

2. Which of the following can correctly describe the circulation pathway of water in the inorganic environment and biological world ( )

A. Atmosphere→Plant roots→Plant leaves→Atmosphere

B． Atmosphere→Natural precipitation→Plant roots→Plant stems and leaves→Atmosphere

C. Plant leaves → plant roots → atmosphere

D. Natural precipitation → plant stems and leaves → plant roots → atmosphere

3. Insert a branch into a bottle dripping with red ink and place it in the sun. After a while, cut the branch lengthwise. Use a magnifying glass to see which part is dyed red. ( )

A. Sieve tubes in phloem B. vessels in xylem

C. The cambium layer between phloem and xylem D. vessels in the phloem

4． When a classmate was doing an experiment to explore the transport of water and inorganic salts by stems, he performed the following operations: Take a fresh branch with leaves, insert its lower end into an Erlenmeyer flask filled with red solution, and then place it in a warm sunny place. place. Try to analyze the answer:

(1) Next, how should he conduct the inquiry?

Observe the color change of the leaf veins. After it turns reddish, take out the branch and rinse the red liquid on the surface of the branch with clean water. Then, use a blade to cut the branch crosswise or vertically, and use a magnifying glass to observe the red liquid on the cut surface. parts.

(2) Through this experiment, the conclusion that should be drawn is _______________________________.

(3) This experiment also proves that the transport direction of water and inorganic salts is __________.

(4) If all the leaves of the branches are removed in this experiment, will the experimental effect be obvious? Why?

Not obvious. After removing the leaves, transpiration cannot proceed and water cannot be transported normally.

Keywords: Beijing Normal University edition seventh grade biology PPT courseware free download, transport function PPT download, .PPT format;

For more information about the PPT courseware "The Lifestyle Transport Function of Green Flowering Plants", please click the "The Lifestyle Transport Function of Green Flowering Plants ppt" tab.

"Transportation Function" PPT download:

"Transportation" PPT download Part 1: Transport of stems Water and inorganic salts are absorbed by the roots of plants. Do the growth of leaves require water and inorganic salts? How does water absorbed by the roots reach the leaves? Think: Through what part of the stem are water and inorganic salts transported?

"Transportation Function" PPT courseware:

"Transportation" PPT courseware Scenario introduction Part of the organic matter produced by plants through photosynthesis is used to maintain life activities and part is stored. The nutrients needed by the roots are transported downward from the leaves. Which part of the stem structure is used to transport organic matter? Learning Objectives 1..

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Update Time: 2024-07-13

This template belongs to biology courseware Beijing Normal University Edition Seventh Grade Biology Volume 1 industry PPT template

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