Explanation

• Using traps for insects is a mechanical method of pest control.
• It involves physically capturing or killing pests without chemicals.

Additional information:

• Chemical control: Use of pesticides.
• Biological control: Use of natural predators or parasites.
• Examples of traps: Sticky traps, pheromone traps, light traps.

Last verified on 19-01-2026

Explanation

• Carbon has a valency of 4, meaning it can form 4 covalent bonds with other atoms.
• This property allows carbon to form complex organic compounds.
• It is the backbone of all organic molecules.

Additional information:

Examples of Carbon Compounds (5):

1. Methane (CH₄)
2. Ethane (C₂H₆)
3. Glucose (C₆H₁₂O₆)
4. Ethanol (C₂H₅OH)
5. Carbon dioxide (CO₂)

Last verified on 19-01-2026

Explanation

• Sufaida is commonly known as Blue Gum or Eucalyptus.
• Its scientific name is Eucalyptus globulus.

Additional information:

• It is widely planted for timber, paper, and essential oils.
• Fast-growing and used in afforestation and soil conservation programs.

Last verified on 19-01-2026

Explanation

• ICARDA (International Center for Agricultural Research in the Dry Areas) maintains the barley gene bank.
• It preserves genetic diversity of barley and other crops for research and breeding.

Additional information:

• CIMMYT: Focuses on wheat and maize improvement.
• ICAR: Indian Council of Agricultural Research, national-level organization.

Last verified on 19-01-2026

Explanation

• DDT (Dichlorodiphenyltrichloroethane) is an example of an organochlorine pesticide.
• It is used to control insects in agriculture and for malaria control.

Additional information:

• Malathion: Organophosphate pesticide.
• Imidacloprid: Neonicotinoid pesticide.

Last verified on 19-01-2026

Explanation

• Cotton contributes around 2% to Pakistan’s GDP.
• It is a major cash crop.
• It forms the backbone of the textile industry.
• It is a key part of the economy.

Additional information:

• Cotton supports millions of farmers and workers in Pakistan.
• Pakistan is among the top cotton-producing countries in the world.

Last verified on 19-01-2026

Explanation

EPIDEM was the first computerized simulation model developed to predict and study plant disease epidemics.

It helps in planning control measures and understanding disease spread.

Additional information:

• DSSAT: Crop growth and yield simulation.
• APSIM: Agricultural Production Systems Simulator for cropping systems.
• CROPGRO: Part of DSSAT, for legume crops modeling.

Last verified on 19-01-2026

Explanation

• Apricot rootstock “Hari” is commonly used in Pakistan for grafting apricot trees.
• It provides strong roots and better adaptability to local soil and climate.

Additional information:

• Helps in increased fruit yield and disease resistance.
• Also used in horticulture programs to improve apricot cultivation.

Last verified on 19-01-2026

Explanation

• Cotton is Pakistan’s major export commodity.
• It contributing significantly to foreign exchange earnings.
• It is used in the textile industry for making fabrics, garments, and yarn.

Last verified on 19-01-2026

Explanation

• The word “since” refers to a specific point in the past, so the past simple tense is required.
• Correct sentence: “We haven’t seen each other since he left.”

Last verified on 19-01-2026