Fruit Science (Pomology)

• is incorrect because grapes have a much lower share than banana and citrus.
• is correct because India contributes approximately:
  Mango (A): ~42-45% of total world production (Rank 1)
  Banana (C): ~26-28% of total world production (Rank 1)
  Citrus (D): ~8-10% of total world production (Rank 3-4)
  Grapes (B): ~3-4% of total world production

• is incorrect because 90 is less than the base square system capacity.
• is incorrect because 150 underestimates the geometric filler capacity.
• is correct because:
  1 hectare = $10,000\text{ m}^2$ with square dimensions $100\text{ m} \times 100\text{ m}$.
  Number of rows = $\frac{100}{10} = 10$, and number of plants per row = 10; thus, main square system plants = $10 \times 10 = 100$ plants.
  In the quincunx system, a filler plant is placed in the center of each square formed by 4 adjacent main trees. Number of filler spaces = $(10 - 1) \times (10 - 1) = 9 \times 9 = 81$ filler plants.
  Total plants = $100 + 81 = 181$ plants.
• is incorrect because 200 assumes double density without subtracting border boundary constraints.

Characteristics of papaya cultivar Punjab Sweet:

• Punjab Sweet is an established commercial variety of papaya (Carica papaya) developed by PAU, Ludhiana.
• It was developed through sibmating of germplasm lines introduced from Kenya.
• It is a dioecious variety, requiring male trees in the orchard for pollination.
• Its fruit weight is much larger, averaging about $1.0\text{--}1.2\text{ kg}$ ($1000\text{--}1200\text{ g}$), NOT 400 grams (400 g is characteristic of small solo types). Thus statement 4 is NOT true.
  
  Option breakdown:
• True statement: It is a papaya variety.
• True statement: Developed from Kenyan germplasm via sibmating.
• True statement: It is strictly dioecious.
• False statement: The fruit weight is around 1 kg, not 400 g.