7. Getting to know plants | page 1 Science class 6
7. Getting to know plants | page 1 Science class 6
page 1
CHAPTER-7. Getting to know plants
1. Herbs: Plants with green and tender stems.
2. Shrubs: Some plants have the stem branching out near the base. The stem is hard but not very thick.
3. Trees: Some plants are very tall and have hard and thick brown stems. The stems have branches in upper parts.
4. Creepers: Plants with weak stems that can’t stand upright and spread on ground.
5. Climber: Those plants that take support on neighbouring structure and climb up. Ex: - Money plants.
6. Functions of stem:
Functions of stem are following:
(I) It gives support to the plants.
(II) It transports water and minerals.
(III) It stores food for plants.
7. Functions of leaf:
Functions of leaf are following:-
(I) The process of transpiration occurs in the leaf.
(II) The process of photosynthesis occurs in the leaf.
(III) It prepares food for plants.
8. Petiole: The part of a leaf by which it is attached to the stem.
9. Lamina: The broad green part of the leaf.
10. Vein: Lines on the leaf.
11. Midrib: A thick vein is in the middle of the leaf.
12. Leaf venation: The design made by vein in the leaf.
13. Reticulate venation: The venation design is net- like on both sides of midrib
14. Parallel venation: The veins are Parallel to one another in the leaves of grass.
15. Transpiration: Water comes out of leaves in the form of vapour by a process.
16. photosynthesis: The plants prepare their food in the presence of sunlight and chlorophyll. For this they use carbon dioxide and water.
17. Raw material of photosynthesis: Water and carbon dioxide.
page 2
CHAPTER-7. Getting to know plants
Parts of Plants:
Flowers, Fruits, Leaves, stems and roots are the part of plants.
Categories of Plants:
Most plants can be classified into three categories:
(I) Herbs, (II) Shrubs and (III) Trees.
(I) Herbs: Plants with green and tender stems.
(II) Shrubs: Some plants have the stem branching out near the base. The stem is hard but not very thick.
(III) Trees: Some plants are very tall and have hard and thick brown stems. The stems have branches in upper parts.
Edible parts of plants: The parts of plant which is eaten is called edible part.
Two examples of edible root:
(i) Turnip
(ii) Carrot
Two examples of edible stem:
(i) Potato
(ii) Onion
Role of of veins and midrib in a leaf:
Veins and midrib in a leaf transport food,water and minerals in leaf.
Give an Example of climber plant:
- Money plant
Functions of roots in plants:
(i) It helps in the conduction of water and minerals from soil to stem b)it stores food
(ii) Fix the plant to the soil
(iii) Give support and prevent soil erosion
Differents between Herbs and Shrubs:
Venations: The design made by veins in a leaf is called the leaf venation.
Types of Vennation:
(a) Reticulate Venation: If this design is net-like on both sides of midrib, the venation is reticulate venation.
(b) Parallel Venation: In the leaves of grass you might have seen that the veins are parallel to one another. This is parallel venation
Transpiration: Water comes out of leaves in the form of vapour by a process called transpiration.
Role of transpiration in plants: Plants release a lot of water into the air through this process.
page 3
CHAPTER-7
1. Herbs: Plants with green and tender stems.
2. Shrubs: Some plants have the stem branching out near the base. The stem is hard but not very thick.
3. Trees: Some plants are very tall and have hard and thick brown stems. The stems have branches in upper parts.
4. Creepers: Plants with weak stems that can’t stand upright and spread on ground.
5. Climber: Those plants that take support on neighbouring structure and climb up. Ex: - Money plants.
6. Functions of stem: Functions of stem are following:-
(I) It gives support to the plants.
(II) It transports water and minerals.
(III) It stores food for plants.
7. Functions of leaf: Functions of leaf are following:-
(I) The process of transpiration occurs in the leaf.
(II) The process of photosynthesis occurs in the leaf.
(III) It prepares food for plants.
8. Petiole: The part of a leaf by which it is attached to the stem.
9. Lamina: The broad green part of the leaf.
10. Vein: Lines on the leaf.
11. Midrib: A thick vein is in the middle of the leaf.
12. Leaf venation: The design made by vein in the leaf.
13. Reticulate venation: The venation design is net- like on both sides of midrib
14. Parallel venation: The veins are Parallel to one another in the leaves of grass.
15. Transpiration: Water comes out of leaves in the form of vapour by a process.
16. photosynthesis: The plants prepare their food in the presence of sunlight and chlorophyll. For this they use carbon dioxide and water.
17. Raw material of photosynthesis: Water and carbon dioxide.
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