Explanation

• Histosols are soils rich in organic matter and usually peaty or boggy.
• Commonly found in cold, wet regions like Canada and Alaska.
• Formed in areas with poor drainage and slow decomposition.
• Important for carbon storage and wetland ecosystems.
• Often used for specialized agriculture or forestry.

Last verified on 06-02-2026

Explanation

• Tomato is rich in Vitamin C (ascorbic acid).
• Supports immune system and skin health.
• Also contains antioxidants like lycopene.
• Helps in collagen formation and wound healing.

Additional information:

• Orange – Vitamin C
• Carrot – Vitamin A
• Spinach – Vitamin K, iron
• Banana – Vitamin B6, potassium

Last verified on 06-02-2026

Explanation

• Citrus fruits (like oranges, lemons, limes) originated in the Indo-Chinese region of Southeast Asia.
• Includes parts of India, Myanmar, and Southern China.
• Cultivated for juice, flavor, and nutrition.
• Rich in vitamin C and antioxidants.
• Now widely grown in tropical and subtropical regions worldwide.

Last verified on 06-02-2026

Explanation

• American cotton (Gossypium hirsutum) is tetraploid, meaning it has four sets of chromosomes (2n = 4x = 52).
• Tetraploid cotton combines genes from two ancestral diploid species.
• Provides high fiber quality and yield.
• Commonly cultivated in USA, Pakistan, and India.
• Important for textile industry and hybrid seed production.

Last verified on 06-02-2026

Explanation

• Crops grown in hilly or mountainous areas are often low in iodine.
• Due to soil erosion and leaching of minerals in high rainfall regions.
• Can lead to iodine deficiency in local populations.
• Iodine is essential for thyroid hormone production.
• Supplementation or iodized salt is commonly recommended.

Last verified on 06-02-2026

Explanation

• Afforestation is the process of planting trees on land that was not previously forested.
  • Helps increase green cover and reduce soil erosion.
  • Important for climate change mitigation and biodiversity.
  • Commonly done in degraded, barren, or desert areas.
  • Supports environmental sustainability and carbon sequestration.

Last verified on 06-02-2026

Explanation

• Bhagnari / Sibi Bhagnari is the largest breed of Zebu cattle (Bos indicus).
• Primarily used as a draught animal for plowing and heavy work.
• Also raised for beef production.
• Originates from Sibi region in Balochistan, Pakistan.
• Known for strength, size, and adaptability to hot climates.

Explanation

• Mulching is the practice of covering the soil surface with crop residues, straw, or organic material.
  • Helps retain soil moisture and reduce evaporation.
  • Prevents weed growth and soil erosion.
  • Improves soil fertility as organic mulches decompose.
  • Common in horticulture and crop fields.

Last verified on 06-02-2026

Explanation

• Older rice refers to rice that has been stored for some time after harvest.
• Its moisture content decreases, making it less sticky when cooked.
• Often considered less fresh, so it is cheaper in price.
• Popular for certain dishes like biryani due to better separation of grains.
• Storage can improve aroma and cooking quality in some varieties.

Last verified on 06-02-2026

Explanation

• Triticum aestivum is the scientific name of common wheat.
• It is a major staple crop grown worldwide.
• Used for flour, bread, and other food products.
• Cultivated in Rabi season in countries like Pakistan.
• Belongs to the Poaceae (grass) family.

Last verified on 06-02-2026