NCERT Class 9 Skill Education MCQ Chapter 2 Rooftop Gardening

NCERT Class 9 Skill Education MCQ Chapter 2 Rooftop Gardening English Medium As Per New Syllabus. to each chapter is provided in the list so that you can easily browse through different chapters NCERT Class 9 Skill Education MCQ Chapter 2 Rooftop Gardening and select need one. NCERT Class 9 Skill Education MCQ Chapter 2 Rooftop Gardening Download PDF. NCERT Class 9 Skill Education Objective Type Solutions.

NCERT Class 9 Skill Education MCQ Chapter 2 Rooftop Gardening

Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. CBSE Class 9 Skill Education Multiple Choice Question English Medium are part of All Subject Solutions. Here we have given NCERT Class 9 Skill Education MCQs, CBSE Class 9 Skill Education Objective Type Notes for All Chapters, You can practice these here.

Rooftop Gardening

Chapter: 2

MCQ

1. What is the expected vegetable yield from a 1 square metre space on a rooftop garden in a year?

(a) 2 kg. 

(b) 5 kg. 

(c) 10 kg. 

(d) 15 kg. 

Ans: (c) 10 kg.

2. Which of the following is a key benefit of rooftop gardening?

(a) It increases indoor air pollution. 

(b) It cools down the building’s temperature. 

(c) It significantly increases the building’s temperature. 

(d) It removes the need for pest control. 

Ans: (b) It cools down the building’s temperature.

3. What should ideally be the life cycle of the plants selected for rooftop gardening?

(a) 1–2 weeks. 

(b) 2–3 months. 

(c) 6–8 months. 

(d) 1–2 years. 

Ans: (b) 2–3 months.

4. How much direct sunlight should a sun-loving rooftop garden layout receive every day?

(a) 1–2 hours. 

(b) 3–4 hours. 

(c) 5–6 hours. 

(d) 8–10 hours. 

Ans: (c) 5–6 hours.

5. Where should heavy containers, such as large pots or cement planters, be safely placed on a roof?

(a) In the exact centre of the roof. 

(b) Hanging from the roof parapet. 

(c) Randomly placed across the roof to balance weight. 

(d) Close to the edges of the roof or above the beams.

Ans: (d) Close to the edges of the roof or above the beams.

6. What is the ideal proportion of cocopeat (or perlite), compost, and soil for a lightweight potting mixture?

(a) 1:2:1. 

(b) 1:1:1. 

(c) 2:1:1. 

(d) 1:1:2. 

Ans: (b) 1:1:1.

7. Why is using only ordinary garden soil in a rooftop pot avoided?

(a) It lacks natural nutrients. 

(b) It drains water too fast. 

(c) It becomes too dense and heavy, preventing root aeration and causing poor drainage. 

(d) It causes plants to grow too quickly. 

Ans: (c) It becomes too dense and heavy, preventing root aeration and causing poor drainage.

8. What should be added to the potting mixture if its pH is too acidic (below 6.0)?

(a) Sulphur. 

(b) Garden lime (calcium carbonate). 

(c) Organic manure. 

(d) Extra cocopeat. 

Ans: (b) Garden lime (calcium carbonate).

9. What should be added to the potting mix if its pH is found to be too alkaline (above 8.5)?

(a) Garden lime. 

(b) Calcium carbonate. 

(c) Sulphur or organic manure. 

(d) Sand. 

Ans: (c) Sulphur or organic manure.

10. Which pest primarily causes deformed leaves in plants like mustard, tomato, and roses?

(a) Spider mites. 

(b) Aphids. 

(c) Caterpillars. 

(d) Slugs. 

Ans: (b) Aphids.

11. What is an effective remedy to treat a caterpillar infestation causing chewed leaves on plants?

(a) Spraying only water to dislodge them. 

(b) Applying salt lines around the pots. 

(c) Using a neem spray and turmeric to repel. 

(d) Digging the soil to expose larvae. 

Ans: (c) Using a neem spray and turmeric to repel.

12. Which pests are responsible for causing black mould and weak, sticky leaves on plants?

(a) Chafers (beetles). 

(b) White flies. 

(c) Spider mites. 

(d) Snails. 

Ans: (b) White flies.

13. When is the recommended time of the day to harvest vegetables to reduce wilting?

(a) Early morning or late evening. 

(b) Mid-afternoon. 

(c) Exactly at noon. 

(d) Late night. 

Ans: (a) Early morning or late evening.

14. How should fruits like tomatoes and chillies be stored and transported to prevent them from rotting quickly?

(a) Sealed in airtight plastic bags. 

(b) Wrapped tightly in a damp newspaper. 

(c) Placed in a freezer immediately after harvest. 

(d) Stored in baskets, trays or ventilated corrugated cardboard boxes. 

Ans: (d) Stored in baskets, trays or ventilated corrugated cardboard boxes.

15. Why shouldn’t harvested fruits be stored in tightly sealed plastic bags?

(a) They need constant exposure to sunlight to ripen. 

(b) The bags trap moisture and ethylene gas, causing them to ripen faster and rot. 

(c) The bags cause them to permanently lose their natural colour. 

(d) The bags will dry the fruits out completely. 

Ans: (b) The bags trap moisture and ethylene gas, causing them to ripen faster and rot.