Ecology Plants Water

Water is transported from roots to shoots and leaves in:

• Xylem

• Phloem

• Stomata

• Cholorophyll

What is transpiration?

• The evaporation and diffusion of water from inside leaves

• The uptake of water through root hair cells

• The loss of water from leaves by osmosis

• The uptake of water through stem cells

What happens to the transpiration rate as light intensity increases?

• It changes

• It stays the same

• It decreases

• It increases

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What happens to the transpiration rate as temperature increases?

• It stays the same

• It changes

• It increases

• It decreases

Look at the diagram above!

the function of the structure A is ....

• transfer glucose

• transfer carbon dioxide

• transfer soil

• transfer water

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How do water enter the roots from the soil?

• diffusion

• osmosis

• transpiration

• active transport

Select all the functions that the root of a plant has:

• food storage for the plant

• anchors the plant to the ground

• absorb water and minerals from the soil

• keeps the plant alive in difficult conditions, when the above-ground parts die

Root hairs cells are specialised cells for plant growth because

• they keep growing until they reach water and nutrients

• they have a large surface area to allow for greater photosynthesis

• they have a large surface area for absorbing water and nutrients

• they keep growing until they reach sunlight for photosynthesis

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Give two examples of mineral salts that are needed by plants!

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Explain why a plant that does not have enough magnesium will not grow well?!

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