Name: _____________________________
Plant Biology
Section 1 – Growing Plants
Label the structure of the flower.
Functions
Part of Flower
Function
Stigma
The stigma receives the pollen from the insects.
Anther
Produces the pollen grains which are the male sex cells.
Petal
The petal attracts insects to the flower.
Ovary
Contains ovules (female sex cells)
Sepal
Protects the bud of the flower
Ovul
Female sex cell found in ovary
Nectary
Produces sugary substance to attract the insects
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Pollination and Fertilisation
Label the structures below
Describe the differences between the two plants shown above.
The insect pollinated flower has anthers that are inside the flower. The anthers of the wind
pollinated flower hang outside the flower
The wind pollinated does not have a nectary. The stigma of the wind pollinated flower is feathery.
Use the word bank below to explain the process of pollination and fertilisation
Pollen
Pollination
Ovule
Stigma
Nectar
Fertilisation
Pollen Tube
Anther
The insects are attracted to the nectar in the plant. The pollen is transferred from the anther of
one flower to the stigma of another flower by pollination. The pollen travels down the pollen tube and
fuses with the ovule, this is known as fertilisation.
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Seed Dispersal
State the methods used for seed dispersal and match them to the correct diagram.
1. Wind
2. Animal Internal
3. Animal External
4. Explosion
Function of the part of the seed
Structure
Label the diagram of the broad bean seed
Function
Protects the seed
Seed Coat
Food Store
Embryo
Provides energy
Develops into a new
plant
Germination
Describe the process of germination.
Germination is the start of growth in the seed to form a new plant. .
State three factors required for germination.
1. Water
2. Oxygen
3. Warmth
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Propagation
State what is meant by the term propagation.
Propagation is the process by which plant number is increased.
State three methods used to propagate plants
1. Runners
2. Cuttings
3. Plantlets
Section 2 – Improving Plant Growth
Organic and Intensive Farming
Advantages
Disadvantages
Organic Farming
Fewer chemicals are used
causing less harm to the
environment.
Intensive Farming
Higher crop yield is produced (more
food)
The crop yield could be lower on
organic farms (about 20% less
compared to non-organic
farming).
Intensive farming involves the use
of various kinds of chemical
fertilisers pesticides, and
insecticides.
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Section 3 - Uses of Plants
Complete the table below to explain how plants can be used for the following.
Plant Name
Foxglove
Plant Product or Use
Heart Medicine
Description of use
A medicine used to treat hear conditions.
Maize (corn)
Crops
Used as a food crop
Poppy
Medicine
Used to produce morphine
Gossypium
Textiles
Used to make cotton
Aloe vera
Cosmetics
Skin care products
Section 4 – Food Chains and Photosynthesis
Food Chains
Explain why plants are important for life on Earth.
Plants are able to absorb energy from the sun and convert this energy into
Draw a food chain below
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The arrows in a food chain/food web represent the ENERGY FLOW. In
reality all living things are part of many chains which we call a FOOD WEB.
Photosynthesis
Where does photosynthesis take place in the
plant cell?
CHLOROPLAST
What is the definition of photosynthesis?
A chemical reaction which allows GREEN plants to make food (glucose) using light energy.
Name the requirements for photosynthesis
Plants require light, carbon dioxide, chlorophyll and water for photosynthesis.
Name the products of photosynthesis
The products of photosynthesis are glucose and oxygen
Photosynthesis Equation (complete the equation for photosynthesis below)
Label the raw materials and products.
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Limiting Factors
Describe the relationship between light intensity and rate of photosynthesis.
As light intensity increases the
rate of photosynthesis increases.
The rate of photosynthesis then
levels off.
Describe the relationship between carbon dioxide concentration and rate of photosynthesis
As carbon dioxide concentration
increases the rate of
photosynthesis increases. The
rate of photosynthesis then
levels off.
Describe the relationship between temperature and rate of photosynthesis
As temperature increases the
rate of photosynthesis increases.
The rate of photosynthesis then
decreases as temperature is
increased further.
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