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Authoritative PPT Summary
"The Stems Grow Taller" PPT courseware on the growth changes of plants
Knowledge review
plant roots and leaves
Plant roots: anchor the plant and absorb water and minerals from the soil.
Plant leaves: can perform photosynthesis to produce nutrients needed for plant growth and development.
True or False
1. The first pair of "leaves" grown by impatiens are different from the leaves that grow later. ( )
2. The water required for photosynthesis of green plants is not absorbed by the roots of the plants. ( )
3. There is a pair of "leaves" growing on the stems of the newly unearthed impatiens seedlings. ( )
4. Photosynthesis of green plants is carried out in the leaves. ( )
5. In 1771, British scientist Priestley discovered that green plants can renew the air. ( )
The role of plant stems
support plants
Transport water and nutrients
How is it transported?
Transport water and minerals absorbed by the roots to all parts of the plant from the bottom up; transport nutrients produced by the green leaves to all parts of the plant from the top down.
Our experiment: Demonstrate how water is transported Take a fresh section of the beaker containing red water.
Place the peach tree branches into the beaker.
Observe the changes in the peach tree branches.
Cut a peach branch crosswise and observe its cross section.
Our experiment: Demonstrating how water is transported
Take a fresh beaker containing red water.
Place the peach tree branches into the beaker.
Observe the changes in the peach tree branches.
Cut a peach branch crosswise and observe its cross section.
Operation:
The ( ) of plants can absorb water and minerals, and can also fix plants in the soil. The ( ) of plants can produce the nutrients needed for plant growth. The ( ) of plants has the function of supporting the plant body and transporting water and nutrients. The stems of plants can transport ( ) and ( ) absorbed by the roots to all parts of the plant from bottom to top; they can transport ( ) produced by green leaves to all parts of the plant from top to bottom.
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"The Stems Grow Taller" PPT on the growth changes of plants:
"The Stems Grow Taller" PPT on the growth changes of plants. Part 1: Introduction of new knowledge. Photosynthesis can be carried out to produce nutrients needed for plant growth and development. What is the function of plant stems? Fixation, absorbing water and minerals Observation: The stems of plants occur..
"The Stems Grow Taller" PPT Courseware 4 on the Growth Changes of Plants:
"The Stems Grow Taller" PPT Courseware on Growth Changes of Plants 4 Roots and Leaves of Plants Roots of plants: can fix plants and absorb water and minerals from the soil. Plant leaves: Can carry out photosynthesis to produce nutrients needed for plant growth and development. ... ... ... ... ..
"The Stems Grow Taller" PPT Courseware 3 on the Growth Changes of Plants:
"The Stem Grows Higher" PPT Courseware 3 on the Growth Changes of Plants Discussion Summary: The role of the stem The stem supports the plant and transports water and nutrients. Observe the microstructure of the stem 1. Cut the tissue of the stem of Impatiens 2. Under the microscope Observe the structure of the neck tissue below. 3..