20 Multiple-Choice Questions (MCQs) related to Diseases Affecting Paneer Rose crops along with their corresponding answers with an explanation
20 Multiple-Choice Questions (MCQs) related to Diseases Affecting Paneer Rose crops along with their corresponding answers with an explanation
Managing Challenges in Paneer Rose Cultivation: Disease Identification and Remediation Strategies
Paneer Rose crops can suffer from yellowing leaves due to fungal infections like powdery mildew. Aphids pose a common threat, mitigated by introducing natural predators such as ladybugs. Wilting, often caused by root rot from excessive moisture, and stunted growth due to nitrogen deficiency are significant concerns. Preventive measures include proper watering, morning irrigation, and regular pruning. Treatment involves antibiotics for bacterial blight, copper-based fungicides for powdery mildew, and addressing nutrient deficiencies.
1. What is the primary cause of yellowing leaves in Paneer Rose crops?
a) Overwatering
b) Underwatering
c) Fungal infection
d) Nutrient deficiency
Answer: c) Fungal infection
Explanation: Yellowing leaves in Paneer Rose crops are often a symptom of fungal infections, such as powdery mildew or rust.
2. Which of the following pests is a common threat to Paneer Rose crops?
a) Aphids
b) Ladybugs
c) Earthworms
d) Butterflies
Answer: a) Aphids
Explanation: Aphids are known to feed on Paneer Rose plants, causing damage to the foliage and sometimes transmitting plant viruses.
3. What is the recommended method to control aphid infestation in Paneer Rose crops?
a) Chemical pesticides
b) Introducing natural predators
c) Pruning affected leaves
d) Increasing irrigation
Answer: b) Introducing natural predators
Explanation: Using natural predators like ladybugs or releasing parasitic wasps is an eco-friendly way to control aphid populations.
4. The wilting of Paneer Rose plants is often associated with:
a) Over-fertilization
b) Under-fertilization
c) Root rot
d) Lack of sunlight
Answer: c) Root rot
Explanation: Wilting in Paneer Rose crops can be a sign of root rot, usually caused by overly wet soil conditions.
5. Which nutrient deficiency can lead to stunted growth in Paneer Rose plants?
a) Nitrogen
b) Phosphorus
c) Potassium
d) Magnesium
Answer: a) Nitrogen
Explanation: Nitrogen deficiency can result in stunted growth and yellowing of lower leaves in Paneer Rose crops.
6. What is the primary symptom of bacterial blight in Paneer Rose?
a) Black spots on leaves
b) Yellow streaks on stems
c) Wilting of entire plant
d) Brown lesions on petals
Answer: c) Wilting of entire plant
Explanation: Bacterial blight often causes sudden wilting of the entire Paneer Rose plant due to blockage of water-conducting vessels.
7. Which weather condition is conducive to the development of powdery mildew in Paneer Rose crops?
a) High humidity
b) Low humidity
c) Excessive rainfall
d) Extreme temperatures
Answer: a) High humidity
Explanation: Powdery mildew thrives in high humidity conditions, leading to the characteristic white powdery growth on leaves.
8. What cultural practice can help prevent the spread of fungal diseases in Paneer Rose crops?
Overhead watering
b) Crowded planting
c) Mulching with organic matter
d) Avoiding pruning
Answer: c) Mulching with organic matter
Explanation: Mulching helps maintain soil moisture levels and prevents the splashing of fungal spores onto plant leaves.
9. The presence of tiny webs on the undersides of leaves indicates an infestation of:
a) Whiteflies
b) Spider mites
c) Thrips
d) Leafhoppers
Answer: b) Spider mites
Explanation: Spider mites create fine webs on the undersides of leaves, causing stippling and discoloration.
10. Which of the following diseases is caused by a virus in Paneer Rose plants?
a) Rust
b) Root rot
c) Rose mosaic
d) Anthracnose
Answer: c) Rose mosaic
Explanation: Rose mosaic is a viral disease that results in mottled discoloration of the leaves.
11. What is the primary vector for the transmission of Rose mosaic virus?
a) Aphids
b) Fungus gnats
c) Leafhoppers
d) Whiteflies
Answer: a) Aphids
Explanation: Aphids are common vectors for transmitting Rose mosaic virus from infected to healthy plants.
12. To control fungal diseases in Paneer Rose, which of the following should be practiced?
a) Watering in the evening
b) Watering in the morning
c) Watering during the hottest part of the day
d) Irregular watering
Answer: b) Watering in the morning
Explanation: Watering in the morning allows the foliage to dry quickly, reducing the risk of fungal diseases.
13. What is the recommended treatment for bacterial blight in Paneer Rose?
a) Fungicides
b) Antibiotics
c) Neem oil
d) Pruning affected areas
Answer: b) Antibiotics
Explanation: Bacterial blight is best controlled with the use of antibiotics specifically formulated for plant diseases.
14. Yellowing between the veins of Paneer Rose leaves may indicate a deficiency in:
a) Iron
b) Calcium
c) Zinc
d) Manganese
Answer: a) Iron
Explanation: Iron deficiency often presents as interveinal chlorosis, where the tissue between the veins turns yellow.
15. Which of the following is a cultural practice to reduce the risk of aphid infestation?
a) Regular pruning
b) Overhead irrigation
c) Applying nitrogen-rich fertilizer
d) Allowing weeds to grow freely
Answer: a) Regular pruning
Explanation: Regular pruning helps remove aphid-infested parts and encourages better air circulation, reducing aphid populations.
16. What is the primary symptom of rust infection in Paneer Rose plants?
Yellowing of leaves
b) Red or orange powdery spots on leaves
c) Wilting of stems
d) Black lesions on petals
Answer: b) Red or orange powdery spots on leaves
Explanation: Rust infections manifest as characteristic rust-colored spots on the leaves.
17. Which of the following is a natural predator of aphids?
a) Whiteflies
b) Ladybugs
c) Leafhoppers
d) Caterpillars
Answer: b) Ladybugs
Explanation: Ladybugs are beneficial insects that feed on aphids, helping to control their populations.
18. What preventive measures can be taken to avoid the spread of fungal spores in Paneer Rose crops?
a) Applying chemical fertilizers
b) Removing and disposing of infected plant debris
c) Increasing plant density
d) Avoiding proper aeration
Answer: b) Removing and disposing of infected plant debris
Explanation: Proper sanitation by removing and disposing of infected plant material helps prevent the spread of fungal spores.
19. Which of the following is a common symptom of thrips infestation in Paneer Rose flowers?
a) Yellowing of leaves
b) Distorted and discolored petals
c) Wilting of stems
d) Brown lesions on stems
Answer: b) Distorted and discolored petals
Explanation: Thrips feeding on flower buds can result in distorted and discolored petals.
20. What is the recommended treatment for powdery mildew in Paneer Rose crops?
a) Copper-based fungicides
b) Neem oil
c) Synthetic pyrethroids
d) Pruning affected leaves
Answer: a) Copper-based fungicides
Explanation: Copper-based fungicides are effective against powdery mildew in Paneer Rose crops and help prevent its further spread.