SciBio_Topic 7_Nutrition and Transport in Flowering Plants_MCQ

On a sunny day, bubbles of gas produced by photosynthesis are released by the green seaweed in a rock pool. Which gas is present in the highest proportion in the bubbles?

• carbon dioxide
• carbon monoxide
• oxygen
• water vapour

Under what conditions does transpiration occur the fastest?

• cold and dry
• cold and humid
• warm and dry
• warm and humid

Which word equation represents photosynthesis?

• carbon dioxide + glucose --> water + oxygen

• carbon dioxide + water --> glucose + oxygen

• glucose + oxygen --> carbon dioxide + water

• oxygen + water --> carbon dioxide + glucose

The diagram shows an image of a cross-section of a leaf, as shown through a light microscope. Which letter shows the part that is responsible for the transport of water?

• A
• B
• C
• D

Which graph shows how the rate of transpiration from the leaves of a plant varies with light intensity?

• 
• 
• 
• 

The diagram shows a cross-section of a leaf seen under a light microscope. What is the role of structure Q?

• gas exchange
• photosynthesis
• respiration
• transport

A light was placed next to a plant. The light was moved further away from the plant and the rate of photosynthesis was measured. Which graph shows the changes in the rate of photosynthesis?

• 
• 
• 
• 

How can the transpiration rate of a plant be decreased?

• increase air movement
• increase humidity
• increase light intensity
• increase temperature

The diagram shows four test tubes that are set up to investigate photosynthesis and respiration. Each test tube is filled with red hydrogencarbonate indicator solution and contains a piece of pondweed. Hydrogencarbonate indicator changes from red to purple in very low carbon dioxide concentrations and from red to yellow in high carbon dioxide concentrations. In which tube will the indicator turn purple first?

• A
• B
• C
• D

Which statement describes transpiration?

• the flow of water up the xylem
• the intake of rainwater through stomata
• the loss of water vapour through stomata
• the uptake of water into root hair cells