Class 8 Science Crop Production and Management Extra Que Ans
Multiple Choice Questions:
Which of the following is a Kharif crop?
- a) Wheat
- b) Paddy
- c) Gram
- d) Pea
Answer: b) Paddy
What is the main purpose of tilling soil?
- a) To kill insects
- b) To loosen soil and bring nutrients to the top
- c) To add water
- d) To remove weeds
Answer: b) To loosen soil and bring nutrients to the top
Which tool is used for removing weeds?
- a) Plough
- b) Seed drill
- c) Khurpi
- d) Harvester
Answer: c) Khurpi
What is the process of separating grains from chaff called?
- a) Winnowing
- b) Threshing
- c) Harvesting
- d) Sowing
Answer: b) Threshing
Which irrigation method is best for water conservation?
- a) Flood irrigation
- b) Sprinkler system
- c) Drip system
- d) Traditional moat system
Answer: c) Drip system
What do Rhizobium bacteria do?
- a) Produce fertilizers
- b) Fix atmospheric nitrogen
- c) Kill weeds
- d) Produce manure
Answer: b) Fix atmospheric nitrogen
Which of these is NOT a traditional method of irrigation?
- a) Moat
- b) Chain pump
- c) Sprinkler system
- d) Rahat
Answer: c) Sprinkler system
What percentage of a plant is water?
- a) 50%
- b) 70%
- c) 90%
- d) 60%
Answer: c) 90%
What is the main purpose of adding manure?
- a) To kill insects
- b) To add color to soil
- c) To replenish nutrients
- d) To increase soil temperature
Answer: c) To replenish nutrients
Which season are Rabi crops grown in?
- a) Rainy season
- b) Summer
- c) Winter
- d) Spring
Answer: c) Winter
Fill in the Blanks:
- The process of loosening and turning soil is called _______.
Answer: tilling or ploughing
- Crops grown in the rainy season are called _______ crops.
Answer: Kharif
- _______ is the supply of water to crops at regular intervals.
Answer: Irrigation
- Undesirable plants growing along with crop plants are called _______.
Answer: weeds
- The cutting of mature crop is called _______.
Answer: harvesting
- _______ are chemicals used to kill weeds.
Answer: Weedicides
- Growing different crops alternately is called _______.
Answer: crop rotation
- Seeds are sown using a _______.
Answer: seed drill
- _______ is an organic substance obtained from decomposition of plant or animal waste.
Answer: Manure
- The process of separating grains from chaff is called _______.
Answer: threshing
Class 8 Science Crop Production and Management Extra Que Ans
Q: What is a crop?
A: A crop is when plants of the same kind are cultivated at one place on a large scale. For example, a wheat crop means all plants grown in a field are wheat plants.
Q: What are Kharif crops?
A: Kharif crops are crops sown in the rainy season (June to September) in India. Examples include paddy, maize, soyabean, groundnut, and cotton.
Q: What are Rabi crops?
A: Rabi crops are crops grown in the winter season (October to March). Examples include wheat, gram, pea, mustard, and linseed.
Q: What is the first step in crop production?
A: The first step in crop production is preparation of soil, which involves tilling or ploughing to loosen the soil and bring nutrient-rich soil to the top.
