A chemical process in which a plant cell uses the energy of sunlight to make food
100
What is hydrotropism?
Growth response toward water
100
What role do humans play in photosynthesis?
Humans give off carbon dioxide that plants need for photosynthesis.
200
What is the function of the leaves?
Absorbs sunlight to produce glucose for food
200
What are xylem?
Tubes that carry water and nutrients up from the roots.
200
What is needed for photosynthesis to happen?
Carbon dioxide,
Water,
Light energy
200
What a plant grows up a wall, what tropism is observed?
Thigmotropism
200
In what organelle does photosynthesis happen?
chloroplast
300
What is the function of the roots?
Anchors the plant to the ground and holds it up;
Takes in water and minerals from the soil; and
Some roots store food
300
What are phloem?
Tubes that moves glucose and nutrients throughout the plant in all directions
300
What are the products of photosynthesis?
Oxygen and glucose
300
What is the effect of gravitropism?
the roots grow in the direction of gravity; the stem grows in the opposite direction
300
How are cones an adaptation that helps with survival?
The hard coat helps the seed survive in harsh environments
400
What is the function of the seed?
Seeds are tiny young plants. They have a food supply to help the young plant grow and a tough outer layer to protect it.
400
Seeds are found to grow at different rates but are planted under identical conditions. What causes the different growth rates?
genetic factors
400
What elements are involved in photosynthesis?
Carbon, oxygen, hydrogen
400
What adaptations does a cactus have?
They use hydrotropism to the extreme. Their roots are LONG and shallow to seek out water
They have also modified their leaves down into to tiny thorns to keep the water from evaporating
And their thick stems are filled with vascular tissue to store water.
400
Some angiosperms do not have bright flowers. Why?
Their pollen is dispersed by the wind (not animals)
500
What gases enter and leave through the stomata?
Co2 enters, O2 exits, water vapor exits.
500
Explain the light dependent reaction of photosynthesis?
Happens only in sunlight. Produces oxygen. Occurs in thylakoid of chloroplast
500
What is the chemical equation of photosynthesis?
6CO2, 6H2O, + light energy = C6H12O6 + 6O2
500
How are bright flowers an adaptation that helps with survival?
Flowers have bright colors so that pollinators (animals) can find the plants
500
What happens during the light independent reaction of photosynthesis?
Happens in both sunlight and dark. Produces glucose. Occurs in stroma of chloroplasts. Also known as the Calvin Cycle