What are the two ways aphids can be destroyed?

Biological pest control and chemical pesticides

Which of these is NOT a way to identify plant diseases?

Taking an infected plant to the garden centre to be examined.

Why do aphids 'attack' plants?

To feed on the glucose in the phloem

Aphids also act as vectors. What does this mean?

They transfer pathogens to the plants

What happens if a plant has a magnesium deficiency?

Leaves become yellow (chlorosis) and growth slows down

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B3 Plant disease and defences TRIPLE

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Plant disease and defences quiz GCSE Biology AQA

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Questions 14

Answers

1
What are the two ways aphids can be destroyed?
Biological pest control and chemical pesticides
Burning them and chemical pesticides
Burning them and chemical fungicides
Biological pest control and chemical fungicides
2
Which of these is NOT a way to identify plant diseases?
Taking an infected plant to the garden centre to be examined.
Taking infected plants to a laboratory.
Looking in a gardening manual or website.
Using testing kits that contain monoclonal antibodies.
3
What type of barrier is : producing antibacterial chemicals
Mechanical
Physical
Chemical
4
Why do aphids 'attack' plants?
To feed on the glucose in the phloem
To feed on the water in the xylem
To kill the plant
To feed on the cellulose in the cell wall
5
Why do plants need magnesium ions?
To make proteins
To make glucose
To make cellulose
To make chlorophyll
6
What type of defence response is: drooping or curling of leaves when touched
Mechanical
Physical
Chemcial
7
Aphids also act as vectors. What does this mean?
They transfer pathogens to the plants
They heal the plant
They kill the plant
They transfer food to the plant
8
What happens if a plant has a magnesium deficiency?
Mosaic pattern of discolouration
Stunted growth
Leaves become yellow (chlorosis) and growth slows down
Purple/black spots
9
What type of barrier is :Bark on trees, layer of dead cells on the outside of stems
Chemical
Mechanical
Physical
10
What happens if a plant has a nitrate deficiency?
Mosaic pattern of discolouration
Purple/black spots
Stundted growth
Yellow leaves
11
What type of defence response is : thorns
Chemcial
Physical
Mechanical
12
What type of defence response is : poisons
Physical
Chemical
Mechanical
13
Why do plants need nitrates?
To make glucose
To make lipids
To make cellulose
To make proteins for growth
14
What type of barrier is :Cellulose cell wall strengthen cells to resist invasion from pathogens
Physical
Mechanical
Chemical

B3 Plant disease and defences TRIPLE Flashcards | StudBud