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Biology - CH4- L3
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What is moisture?
The presence of water in the air
Plants food is a kind of ...
sugar
What are airplants?
- Don't have roots / - Make food by absorbing moisture from the air
Explain: Fibirous roots (2) and give examples (3)
many and spred in all directions+ grow close to surface. Examples: Grass/ pine trees/ cactus
Explain (2) : Taproots and give examples (3).
1 large root + grow deep in the soil (gravity) + carrots, beetroots, raddish
Types of roots (2)
Taproots: 1 large root + grow deep in the soil (gravity) + carrots, beetroots, raddish / Fibrous roots: many and spred in all directions+ grow close to surface
Why are roots important? (3)
1- stabilize.the plant / 2- store food made by leaves / 3- absorb water and minerals from the soil
What do chloroplasts contain?
Chlorophyll
What is the site of photosynthesis ?
Chloroplast
What's the diffrence between the stems of many plants and the stems of trees?
Plants: Green + Soft + flexible + carry out photosynthesis like leaves/ Trees and bushes: hard rigid stems
What protects the stem and prevent them from dying out?
Waxy covering
In what position do stems grow?
Up towards the light
Types of leaves:
- Most of them are flat - Clover (circle leaf pattern ) - Ash trees (opposite leaf pattern) - Grape vines ( staggered, zigzag leaf pattern)
What helps the chlorophyll in leaves catch sunlight?
The shape and positioning helps them catch sunlight to make food
Explain: Chlorophyll
- A green subtance inside of chloroplast - makes leaves green - captures energy from the sun
Explain: Chloroplast (3)
- A tiny structure containing chlorophyl - The site of photosynthesis - dak green disks connected by threadlike materials
Leaves contain.................. that contains ...........................
chloroplast // chlorophyl
What do plants release in the process of photosynthesis?
Oxygen
Explain: How plants make their food ( the process of photosynthesis )
water and minerals (roots) + Carbon dioxide (leaf) + sunlight (captured by chlorophyl) = Combine to make food in the leaves
What is the leaves' function in the process of photosynthesis?
1- Absorb carbon dioxide / 2- the chlorophyl inside of leaves captures energy from the sun
What is the roots' function in the process of photosynthesis ?
Absorb water and minerals from the soil.
What do plants need to make their food?
Sunlight / Carbon Dioxide / water
What is the meaning of "Photosynthesis" ?
The process that helps leaves make food.
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