Worksheets31/7 Essential Life Processes of Plants
Total questions: 15
Worksheet time: 16mins
What happens to the transpiration rate as the temperature increases?
It decreases
It stays the same
It increases
The diagram attached shows an experimental set-up. Under which of the following conditions will the rate of movement of the air bubble be the fastest?
[Humidity; Light intensity; Temperature]
high; high; low
high; low; high
low; high; high
low; low; low
Why does the rate of transpiration increase if the light intensity is increased?
The humidity increases, which makes the rate of transpiration increase
The root hair cells become more permeable to water, letting more water into the plant and through the xylem
The stomata open wider to let more carbon dioxide into the leaf for photosynthesis
The rate of photosynthesis increases and stomata are wide open which increases transpiration rate.
Which of the following is/are necessary condition(s) of germination?
(i) Light
(ii) Oxygen
(iii) Water
(iv) Carbon Dioxide
(i) only
(i) and (iii)
(ii) and (iii)
(ii) and (iv)
Seeds must carry out photosynthesis in order to germinate.
True
False
Seeds must acquire nutrients from external sources to germinate, because food cannot be stored in seeds.
True
False
Plants suck up water from the stomata in their roots.
True
False
How do root hair cells absorb water?
By osmosis
By diffusion
By active transport
By capillary action
What causes water to rise up through a plant?
photosynthesis
the pumping action of transpiration
cytoplasm
none of the above
What does the xylem transport in a plant?
Water and dissolved sugars
Water and dissolved mineral salts
Water, dissolved sugar and mineral salts
Water only
Sucrose and amino acids are transported in plants through...?
(i) the veins
(ii) the xylem
(iii) the phloem
(iv) the roots
(i) only
(iii) only
(i) and (iii)
(ii) and (iv)
Refer to the set-up attached, which is used to investigate the effect of potassium deficiency on plant growth. Which of the following is/are the reason(s) for wrapping the flask in aluminium foil?
(1) To prevent the decomposition of nutrients in the solution under sunlight
(2) To prevent the cells in the roots of the seedlings from carrying out photosynthesis
(3) To prevent the growth of algae in the solution
(1) only
(2) only
(3) only
(2) and (3) only
A plant is withering away due to the lack of protein nutrients it needs for survival. What macronutrient could be added to the soil to help with plant growth?
Nitrogen
Manganese
Copper
Carbon
Which ion is critical for the production of chlorophyll?
Potassium ion
Nitrate ion
Phosphate ion
Magnesium ion
Why do plants need phosphorus?
(i) it is part of DNA
(ii) it is part of ATP
(ii) it is used in transpiration
(i) only
(ii) only
(i) and (ii)
(i), (ii), and (iii)
