Worksheet: Structure and Function of Plants: Leaves

In this worksheet, we will practice identifying the function of leaves in supporting the survival, growth, behaviour, and reproduction of a plant.

Q1:

What is the main function of leaves?

  • AThey help plants make new plants (reproduce).
  • BThey help plants make food.
  • CThey help plants absorb water from the soil.
  • DThey transport water to the rest of the plant.

Q2:

Roots take in water and minerals from the ground. Use the diagram to identify two things that leaves take in to help a plant make food (sugar).

  • ALight energy and carbon dioxide
  • BWater and minerals
  • COxygen and light energy
  • DOxygen and glucose (sugar)

Q3:

Stomata close during the night and open during the day. Why is carbon dioxide unneeded at night?

  • ABecause plants do not need to take in water at night
  • BBecause photosynthesis happens during daylight
  • CBecause plants need more oxygen during the night

Q4:

The diagram shows a close-up of a stoma (hole) inside the epidermis (skin) of a leaf.

How do stomata help plants during photosynthesis?

  • AStomata take in oxygen, give off carbon dioxide, and limit water loss.
  • BStomata take in carbon dioxide, give off oxygen, and limit water loss.
  • CStomata take in carbon dioxide and water and give off oxygen.
  • DStomata take in oxygen and give off oxygen and water.

Q5:

The image shows a leaf magnified under a microscope. The green cells shown are called chloroplasts . This is where chlorophyll is made in the leaf.

How does chlorophyll help plants survive?

Leaf cells-72
  • AChlorophyll helps plants produce pollen.
  • BChlorophyll helps plants produce their own food.
  • CChlorophyll helps plants respire.
  • DChlorophyll helps plants reproduce.

Q6:

Why do leaves change color in the fall?

Autumn maple leaves-72ppl
  • AThe leaves become orange because they have been burnt by the summer sun.
  • BThe green pigment (chlorophyll) begins to break down, as there is less sunlight for the plants to use to make food.
  • CThe green pigment (chlorophyll) changes its color to increase photosynthesis and make more food.

Q7:

The Amorphophallus titanum, corpse flower, has no leaves. Plants with no leaves that cannot make chlorophyll are known as parasitic plants. Where do parasitic plants source their food?

A corpse flower (Amorphophallus titanum) - 72 ppi
  • AParasitic plants take their food (nutrients) from other dead plants.
  • BParasitic plants take in food (nutrients) from the air.
  • CParasitic plants attach themselves to other plants and take their food.
  • DParasitic plants take in food (nutrients) from the soil.

Q8:

Olivia thinks that plants without leaves can not survive. Select the best response to her statement from the answers given.

  • AOlivia is correct; plants without leaves can not survive.
  • BThis is not true; some plants like cacti can make food in other parts of the plant.

Q9:

What is chlorophyll?

  • AThe name of the food that plants produce
  • BThe green pigment in plants that helps make food
  • CThe organelle that helps in respiration
  • DThe green pigment in plants that helps in transpiration

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