Curriculum
Course: AQA A Level Biology 7402
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Curriculum

AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

5.3.1 Primary Producers – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
This portion of the root of a plant is responsible for the visual perception of growth:
This portion of the root of a plant is responsible for the visual perception of growth:
Zone of cell division
Vascular cylinder
Zone of elongation
Endodermis
Zone of maturation
2.
According to the comparison table in this lesson, what is the Deficiency symptom of Potassium?
According to the comparison table in this lesson, what is the Deficiency symptom of Potassium?
Plant mineral requirements
Stunted growth, yellow older leaves
Poor root growth
Yellow leaf edges
Yellow leaves (chlorosis)
3.
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 6
IGCSE Biology 12.3 Aerobic respiration, SEED GERMINATION - Question 6
A
B
C
D
4.
What is a suitable control for the seed respiration experiment?
More germinating seeds
No limewater
Boiled (dead) seeds of the same mass
Seeds in bright light
5.
A student tests whether woodlice move away from light. What is the independent variable?
Number of woodlice moving
Size of the choice chamber
Room temperature
Light intensity
6.
In an experiment on the effect of light intensity on photosynthesis rate, the dependent variable is:
light intensity
temperature
type of plant
rate of O2 production
7.
The bar chart shows energy at four trophic levels. Why is a fifth level of predator unlikely here?
Dr Dabour Hub Academy - figure 1
Energy increases at higher levels
Only about 0.8 kJ would remain — too little to support a population
Producers would run out of light
Decomposers eat all top predators
8.
The first organisms to colonise bare rock are:
Pioneer species such as lichens
Oak trees
Grasses
Shrubs
9.
In the sequence covered in this lesson, which step comes immediately after Respiration?
In the sequence covered in this lesson, which step comes immediately after Respiration?
ATP
ADP + Pi + energy
ATP regenerated
Hydrolysis
10.
Which statement best describes Nitrates?
Which statement best describes Nitrates?
Needed to make proteins for growth.
Lack of a mineral causes symptoms.
Absorb water and minerals.
Nutrients plants absorb from soil in solution.
11.

A redox indicator such as DCPIP can be used to investigate the light-dependent stage because it

gives off oxygen
absorbs carbon dioxide
is decolourised when it accepts electrons from the chloroplasts
is a pigment
12.
A pyramid of biomass can sometimes be inverted, for example in some plankton communities. True or false?
True
False
False, never
True only on land
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Part of 5. Energy Transfers In and Between Organisms (A Level only) — see every lesson and quiz in this unit.
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