Lesson 4.3.3.1
4.3.3.1 Detection and identification of plant diseases Quiz: AQA Biology, Unit 3
20 questions
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Lesson 4.3.3.1, Detection and identification of plant diseases: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 3: Infection and response, written with Revision Ninja.
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The 20 questions
-
(HT only) Which sign can indicate a plant disease?
- Increased seed mass
- Stunted growth
- Rapid root expansion
- Thicker bark
-
Which of the following is a physical sign used to detect plant disease?
- Thickened leaf cuticle
- Spots on leaves
- Increased transpiration rate
- Rapid root growth
-
(HT only) Areas of decay on a plant are called what?
- Cuticles
- Chloroplasts
- Rot
- Stomata
-
Besides physical plant symptoms, how can a plant disease be detected?
- Lack of sunlight
- Excessive soil water
- Presence of pests
- High soil pH
-
Which tool is used in diagnostic test kits to identify plant pathogens?
- Iodine solution
- Biuret reagent
- Benedict's reagent
- Monoclonal antibodies
-
Which pathogen type is NOT listed among plant pathogens in the specification?
- Viral
- Fungal
- Protists
- Bacterial
-
Which of these diseases affecting plants is caused by a virus?
- Rose black spot
- Downy mildew
- Tobacco mosaic virus
- Crown gall disease
-
Which fungal plant disease is named in the specification?
- Rust
- Downy mildew
- Ergot
- Black spot
-
Which ion deficiency causes stunted growth in plants?
- Calcium
- Magnesium
- Potassium
- Nitrate
-
Which ion deficiency causes chlorosis in plants?
- Chloride
- Calcium
- Sodium
- Magnesium
-
Which insect is named in the specification for plant disease?
- Aphids
- Honeybees
- Earthworms
- Ladybirds
-
A plant shows chlorosis. Which ion is the specification's likely cause?
- Chloride
- Magnesium
- Nitrate
- Sodium
-
A plant is stunted in growth. Which deficiency fits the specification?
- Nitrate
- Magnesium
- Potassium
- Calcium
-
Which symptom is a recognised sign used to detect plant disease?
- Dark green leaves
- Rapid flowering
- Stunted growth
- Thicker stem roots
-
Which kit can be used by gardeners to identify a specific plant pathogen?
- Benedict's reagent kit
- Iodine solution kit
- Monoclonal antibody kit
- Biuret test kit
-
What are nitrate ions needed for in plants to enable healthy growth?
- Glucose breakdown
- Fat storage
- Water absorption
- Protein synthesis
-
Which molecule requires magnesium ions for its synthesis in green plants?
- Starch
- Glucose
- Chlorophyll
- Cellulose
-
Besides viruses, bacteria, and fungi, which group of organisms causes plant disease?
- Mammals
- Insects
- Protozoa
- Algae
-
Why can plant diseases be difficult to identify from visual symptoms alone?
- Symptoms disappear quickly
- Plants change colour
- Pathogens mutate daily
- Symptoms overlap
-
Why are monoclonal antibody test kits useful for identifying plant pathogens?
- Specific binding
- Fast colour change
- Low cost
- Universal detection
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