9Ca

1       Where does photosynthesis occur in a rose bush? A       in all the parts B       in parts R and S only C       in part R only D       in part Q only

2       Plants often turn some of the food they make into another substance for storage.
The name of this substance is:

A       glucose.                          B       starch.

C       fibre.                              D      pasta.

 

3       Which of these shows the correct word equation for photosynthesis?

A       glucose  +  carbon dioxide ® water  + oxygen (+ energy)

B       glucose  (+ energy) ® oxygen +  glycerol

C       water  +  carbon dioxide (+ energy) ® glucose  +  oxygen

D       chlorophyll + carbon dioxide ® water  +  glycogen

 

4       Aerobic respiration is a process which:

A       stores chemical energy in food.

B       makes food for plants living under water.

C       does not happen in plants but only in humans when they exercise hard.

D       releases energy from food.

 

9Cb

1       Leaves are often wide so that they can:

A       absorb as much sunlight as possible.

B       catch as much rain as possible.

C       provide shelter for animals living under them.

D       float to the ground when they drop in autumn.

 

2       Gases get into and out of a leaf by:

A       diffusion.                         B       absorption.

C       conduction.                     D      convection.

 

3       Look at this list of substances. 

          glucose   fat    cellulose   protein    

          Which of these substances can plants make?

A       glucose and cellulose only

B       glucose, cellulose and fat

C       glucose, cellulose and protein

D       all of them

 

4       Plants need cellulose to:

A       store energy.

B       repair damaged cells.

C       make cell walls.

D       make cell surface membranes.

 

9Cc

1        The picture shows a cell from a root. What is it called? A       xylem cell                       B       root cortex cell C       root palisade cell             D      root hair cell

 

2       If plants do not get enough water they start to:

A       shrink.

B       grow towards the light.

C       grow bigger roots.

D       wilt.

 

3       One important type of mineral salt is:

A       nitrate.                            B       sodium chloride.

C       clay.                               D      loam.

 

4       Water is carried up a plant in xylem tubes. What else do xylem tubes carry?

A       glucose                           B       fibre

C       mineral salts                    D      pollen

 

9Cd

1       The atmosphere is about:

A       80% oxygen and 20% nitrogen.

B       80% nitrogen and 20% oxygen.

C       80% carbon dioxide and 20% oxygen.

D       80% oxygen and 20% carbon dioxide.

 

2       Look at these chemical processes.

          photosynthesis                respiration             burning fuels

          Which of these processes add carbon dioxide to the air?

A       respiration and burning

B       respiration only

C       photosynthesis and respiration

D       burning only

 

3       Plants are important in keeping the atmosphere in balance because:

A       they use up oxygen.

B       they use up carbon dioxide.

C       they provide food for animals and humans.

D       they use water.

 

4       Which of these would not be a disadvantage of cutting down forests?

A       Logging companies could make more profits.

B       There would be fewer trees to keep the atmosphere in balance.

C       Some species might become extinct.

D       Floods might wash away the soil.