Pregunta 1
Pregunta
Where does photosynthesis occur in a rose bush?
Respuesta
-
A In the leaves
-
B In the roots
-
C In the flowers
-
D In the seeds
Pregunta 2
Pregunta
Plants often turn some of the food they make into another substance for storage.
The name of this substance is:
Respuesta
-
A glucose
-
B starch
-
C fibre
-
D pasta
Pregunta 3
Pregunta
Which of these shows the correct word equation for photosynthesis?
Respuesta
-
A glucose + carbon dioxide → water + oxygen (+ energy)
-
B glucose (+ energy) → oxygen + glycerol
-
C water + carbon dioxide → glucose + oxygen
-
D chlorophyll + carbon dioxide → water + glycogen
Pregunta 4
Pregunta
Aerobic respiration is a process which:
Respuesta
-
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.
Pregunta 5
Pregunta
Leaves are often wide (broad) so that they can:
Respuesta
-
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.
Pregunta 6
Pregunta
Gases get into and out of a leaf by:
Respuesta
-
A diffusion
-
B absorption
-
C conduction
-
D convection
Pregunta 7
Pregunta
Look at this list of substances: glucose, fat, cellulose, protein.
Which of these substances can plants make?
Respuesta
-
A glucose and cellulose only
-
B glucose, cellulose and fat only
-
C glucose, cellulose and protein only
-
D all of them
Pregunta 8
Pregunta
Plants need cellulose to:
Pregunta 9
Pregunta
The picture shows a cell from a root. What is it called?
Respuesta
-
A xylem cell
-
B root cortex cell
-
C root hair cell
-
D root palisade cell
Pregunta 10
Pregunta
If plants do not get enough water they start to:
Pregunta 11
Pregunta
One important type of mineral salt for plants is:
Respuesta
-
A nitrate
-
B sodium chloride
-
C loam
-
D clay
Pregunta 12
Pregunta
Water is carried up a plant in xylem tubes. What else do xylem tubes carry?
Respuesta
-
A glucose
-
B fibre
-
C mineral salts
-
D pollen
Pregunta 13
Pregunta
The atmosphere is about:
Respuesta
-
A 81% oxygen and 21% nitrogen.
-
B 78% nitrogen and 21% oxygen.
-
C 81% carbon dioxide and 21% oxygen.
-
D 78% carbon dioxide and 21% oxygen
Pregunta 14
Pregunta
Look at these chemical processes. photosynthesis respiration burning fuels
Which of these processes add carbon dioxide to the air?
Pregunta 15
Pregunta
Plants are important in keeping the atmosphere in balance because:
Pregunta 16
Pregunta
Which of these would NOT be a disadvantage of cutting down forests?
Respuesta
-
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.
Pregunta 17
Pregunta
Where does photosynthesis occur in a rose bush?
Pregunta 18
Pregunta
Plants often turn some of the food they make into another substance for storage. The name of this substance is:
Respuesta
-
A glucose.
-
B starch.
-
C fibre.
-
D pasta.
Pregunta 19
Pregunta
Leaves are often wide so that they can:
Respuesta
-
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.
Pregunta 20
Pregunta
Water is carried up a plant in xylem tubes. What else do xylem tubes carry?
Respuesta
-
A glucose
-
B fibre
-
C mineral salts
-
D pollen