Which nitrogen-fixing bacteria commonly associate with legume root nodules?
Correct answer: A
The symbiosis supplies biologically fixed nitrogen.
Agriculture and Rural Development
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Which activity concerns beekeeping?
Correct answer: B
Bees are managed for honey and other benefits.
Which soil property expresses acidity or alkalinity?
Correct answer: A
It influences nutrient availability and crop suitability.
Which practice stores rainwater for later use?
Correct answer: B
Collected runoff can supplement water supplies.
Which system combines trees with crops or livestock on the same land?
Correct answer: C
The components are managed together in a land-use system.
Which crop category includes mustard and groundnut?
Correct answer: B
These crops are grown mainly for oil-rich seeds.
Which agricultural term means removing unwanted plants from a field?
Correct answer: C
Weeds compete with crops for resources.
Which activity concerns breeding and rearing fish?
Correct answer: A
It is a branch of aquaculture.
Which village institution provides a forum for all registered village electors?
Correct answer: C
It enables direct participation in local governance.
Which process adds nutrients through the irrigation system?
Correct answer: C
Fertiliser is delivered with irrigation water.
Which crop category includes gram and lentil?
Correct answer: D
Pulses are harvested for their dry edible seeds.
Which agricultural activity concerns rearing silkworms?
Correct answer: D
Silkworm rearing supports silk production.
Evaluate the two proposed answers. Which are supported? I. Multiple cropping — the meaning of the practice or term: Planned sequence of different crops over time. II. Kharif crop — the meaning of the practice or term: Repeated cultivation of one crop on a field.
Correct answer: A
I is incorrect: Multiple cropping → Growing more than one crop on the same land in a year. Cropping intensity rises with additional crop cycles. II is incorrect: Kharif crop → Crop generally grown with the southwest monsoon season. Rice and maize are common examples, with regional variation.
For Seed rate, identify the meaning of the practice or term.
Correct answer: C
It depends on crop, spacing, germination and establishment method.
Evaluate the two proposed answers. Which are supported? I. Crop rotation — the meaning of the practice or term: Reducing soil disturbance to the level needed for crop establishment. II. Mixed cropping — the meaning of the practice or term: Growing crops together without a fixed row arrangement.
Correct answer: A
I is incorrect: Crop rotation → Planned sequence of different crops over time. It can interrupt pest cycles and improve nutrient management. II is correct: Mixed cropping → Growing crops together without a fixed row arrangement. It can spread production risk.
For Zero tillage, identify the meaning of the practice or term.
Correct answer: D
Special equipment can place seed through crop residues.
Evaluate the two proposed answers. Which are supported? I. Relay cropping — the meaning of the practice or term: Sowing the next crop before the standing crop is harvested. II. Multiple cropping — the meaning of the practice or term: Growing more than one crop on the same land in a year.
Correct answer: B
I is correct: Relay cropping → Sowing the next crop before the standing crop is harvested. It creates an overlap in crop growth periods. II is correct: Multiple cropping → Growing more than one crop on the same land in a year. Cropping intensity rises with additional crop cycles.
For Harvest index, identify the meaning of the practice or term.
Correct answer: A
It expresses allocation to the harvested economic product.
Evaluate the two proposed answers. Which are supported? I. Intercropping — the meaning of the practice or term: Planned sequence of different crops over time. II. Zaid crop — the meaning of the practice or term: Short-season crop grown between rabi and kharif.
Correct answer: B
I is incorrect: Intercropping → Growing crops together in a planned spatial arrangement. Row patterns allow deliberate use of resources. II is correct: Zaid crop → Short-season crop grown between rabi and kharif. Summer vegetables and fodder may be grown where water is available.
Evaluate the two proposed answers. Which are supported? I. Mixed cropping — the meaning of the practice or term: Growing crops together without a fixed row arrangement. II. Harvest index — the meaning of the practice or term: Economic yield divided by biological yield.
Correct answer: D
I is correct: Mixed cropping → Growing crops together without a fixed row arrangement. It can spread production risk. II is correct: Harvest index → Economic yield divided by biological yield. It expresses allocation to the harvested economic product.
For Plant population, identify the meaning of the practice or term.
Correct answer: A
Spacing and survival determine the achieved population.
Evaluate the two proposed answers. Which are supported? I. Intercropping — the meaning of the practice or term: Sowing the next crop before the standing crop is harvested. II. Minimum tillage — the meaning of the practice or term: Reducing soil disturbance to the level needed for crop establishment.
Correct answer: C
I is incorrect: Intercropping → Growing crops together in a planned spatial arrangement. Row patterns allow deliberate use of resources. II is correct: Minimum tillage → Reducing soil disturbance to the level needed for crop establishment. It can save energy and help conserve soil.
For Relay cropping, identify the meaning of the practice or term.
Correct answer: A
It creates an overlap in crop growth periods.
Evaluate the two proposed answers. Which are supported? I. Monocropping — the meaning of the practice or term: Repeated cultivation of one crop on a field. II. Kharif crop — the meaning of the practice or term: Crop generally sown in the cooler season and harvested in spring.
Correct answer: D
I is correct: Monocropping → Repeated cultivation of one crop on a field. It can increase dependence on a narrow set of management practices. II is incorrect: Kharif crop → Crop generally grown with the southwest monsoon season. Rice and maize are common examples, with regional variation.
For Minimum tillage, identify the meaning of the practice or term.
Correct answer: A
It can save energy and help conserve soil.