• Ginger (Zingiber officinale) $\rightarrow$ (III) $2n = 44$: Diploid/tetraploid cytotype series reported in zingiberaceous crops ($2n = 22, 44$).
• Turmeric (Curcuma longa) $\rightarrow$ (I) $2n = 63$: Cultivated turmeric is an autotriploid ($2n = 3x = 63$, with basic number $x = 21$), rendering it sexually sterile.
• Coriander (Coriandrum sativum) $\rightarrow$ (IV) $2n = 22$: Belongs to family Apiaceae with standard diploid complement of $2n = 22$.
• Cumin (Cuminum cyminum) $\rightarrow$ (II) $2n = 14$: Standard diploid chromosome complement of $2n = 2x = 14$.
• Correct Combination: (A)-(III), (B)-(I), (C)-(IV), (D)-(II), matching Option 2.

Correct option: (2) (A) - (Ill), (B) - @), (C) - (IV), (B) - (Il)

• Floral Biology and Anthesis in Cashew (Anacardium occidentale, family Anacardiaceae):
• Cashew is andromonoecious, producing both staminate (male) and hermaphrodite (bisexual) flowers in the same terminal panicle.
• Time of Anthesis: Anthesis commences after sunrise. Peak opening of hermaphrodite / bisexual flowers takes place during bright morning hours between 9:00 AM and 2:00 PM, when temperatures rise and relative humidity declines, encouraging pollinator foraging (especially by bees and flies).
• Correct Option: Option 3 (9 AM to 2 PM).

• Dibbling Method of Planting:
• Involves making small holes at designated planting distances and pressing planting material into the soil.
• Standard commercial planting method for Garlic (Allium sativum), where individual disease-free cloves are placed vertically (root end down, neck up) at $2.5-5.0\text{ cm}$ depth at $15 \times 10\text{ cm}$ spacing.
• Other Crops: Small cardamom is planted using sucker clumps in pits; nutmeg is planted as grafted seedlings in large pits; coriander is sown by seed broadcasting or line sowing.
• Correct Option: Option 4 (Garlic).