Question

Arrange the seed processing steps in sequential order:
A. Pre-cleaning
B. Seed treatment
C. Size grading
D. Length grading
E. Seed conditioning

• A. A, E, C, D, B
• B. E, A, D, C, B
• C. B, A, C, D, E
• D. E, A, C, D, B

Hint:

Seed processing logic: Always clean first, then grade, and always treat last. You wouldn't waste expensive chemical treatment on trash or broken seeds that you are about to grade out!

Answer 1

The Correct Option is D

Concept: Seed processing is the preparation of harvested seed for marketing. It involves removing impurities, upgrading the quality, and applying protective treatments. The sequence follows a logic of "general to specific" cleaning.

Step 1: Identify the entry point.
When raw seeds (thrashed material) arrive at the plant, the first step is Seed conditioning (E) (or scalping/reception), which involves initial drying and removal of very large trash.

Step 2: Primary cleaning.
Next is Pre-cleaning (A) (air-screen cleaning), which removes the bulk of weeds, inert matter, and smaller debris based on weight and width.

Step 3: Grading based on dimensions.
After basic cleaning, the seed is upgraded. Size grading (C) (thickness/width) usually precedes Length grading (D) (done using indented cylinders to remove broken seeds).

Step 4: Final step before bagging.
The very last operation in the processing sequence, before the seed is weighed and bagged, is Seed treatment (B), where fungicides or insecticides are applied.

Step 5: Final Sequence.
The correct logical flow is E $\rightarrow$ A $\rightarrow$ C $\rightarrow$ D $\rightarrow$ B.