Explanation

• Extrapersonal communication occurs between humans and non-human entities, like animals, machines, or the environment.
• It includes signals, gestures, sounds, and technological communication.
• Important in areas like robotics, animal behavior studies, and environmental interaction.

Last verified on 03-02-2026

Explanation

• Situation analysis is the first step in planning any extension program.
• It involves understanding the current conditions, needs, and problems of the target community.
• Helps design relevant and effective programs based on real data.

Last verified on 03-02-2026

Explanation

• An opinion leader is a person who influences others to adopt new ideas or innovations.
• They are trusted and respected members of a social group.
• Their recommendations often speed up the acceptance of innovations.

Last verified on 03-02-2026

Explanation

• Oligopoly is a market dominated by a few large suppliers or firms.
• Each supplier can influence prices and market decisions.
• Common in industries with high investment costs or specialized products.

Last verified on 03-02-2026

Explanation

• Tomatoes for canning are harvested at the red ripe stage for best taste and preservation.
• At this stage, fruits have full color, flavor, and nutrients.
• Harvesting too early or late affects quality and shelf life of canned products.

Last verified on 03-02-2026

Explanation

• Refrigerants are gases used in refrigerators to absorb heat and provide cooling.
• Freon (CFCs) and ammonia are commonly used in domestic and commercial refrigeration.
• They evaporate at low temperatures, absorbing heat from the fridge interior.
  

Last verified on 03-02-2026

Explanation

• Development in fruits refers to irreversible changes in size, structure, and quality.
• It includes both quantitative (size, weight) and qualitative (taste, color, texture) changes.
• Essential for fruit to reach marketable and edible state.

Last verified on 03-02-2026

Explanation

• Mines and fisheries are natural resources that reduce output per unit when overused.
• Diminishing returns occur when each additional input produces less than the previous one.
• This principle helps manage extraction and prevent resource depletion.

Last verified on 03-02-2026

Explanation

• Modern agriculture in Pakistan relies on advanced techniques and irrigation systems.
• Traditional or rain-fed methods alone cannot meet food demand.
• Efficient water use, mechanization, and high-yield crops are essential for sustainability.

Explanation

• Net return per hectare measures the total profit a farmer earns from one hectare of land.
• It reflects the overall efficiency of land use, crop management, and inputs.
• Higher net return indicates better resource utilization and farm productivity.

Last verified on 03-02-2026