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.
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)
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
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.
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?
- AChlorophyll helps plants produce pollen.
- BChlorophyll helps plants produce their own food.
- CChlorophyll helps plants respire.
- DChlorophyll helps plants reproduce.
Why do leaves change color in the fall?
- 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.
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?
- 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.
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.
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