COMPONENT OF SEED QUALITY
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Question No. 1
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What is the primary purpose of maintaining genetic purity in seeds?
A.
To improve seed appearance
B.
To obtain maximum yield
C.
To reduce storage costs
D.
To facilitate machine planting
Question No. 2
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Which generation system is used for maintaining genetic purity in seed production?
A.
Foundation to Certified to Breeder
B.
Certified to Foundation to Breeder
C.
Breeder to Foundation to Certified
D.
Foundation to Breeder to Certified
Question No. 3
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What is the main difference between self-pollinated and cross-pollinated plants regarding genetic purity?
A.
Cross-pollinated plants maintain purity better
B.
Self-pollinated plants lose characters faster
C.
Self-pollinated plants maintain specific characters over generations
D.
There is no difference
Question No. 4
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What is isolation distance in seed production?
A.
Distance between storage facilities
B.
Distance to prevent cross-fertilization
C.
Distance for transportation
D.
Distance between processing units
Question No. 5
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Which crops are examples of self-pollinated plants?
A.
Maize, sorghum, cauliflower
B.
Rice, wheat, soybean
C.
Sunflower, mustard, radish
D.
Cotton, sugarcane, potato
Question No. 6
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What does physical purity refer to in seed quality?
A.
Genetic uniformity of seeds
B.
Absence of diseases and pests
C.
Freedom from weed seeds and inert matter
D.
Moisture content optimization
Question No. 7
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Why is 100% physical purity difficult to achieve?
A.
Seeds are naturally impure
B.
Contamination occurs during sowing
C.
Cleaning machines cannot remove all admixtures
D.
Storage conditions cause contamination
Question No. 8
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How is Pure Live Seed (PLS) content calculated?
A.
Germination % + Purity %
B.
Purity % - Germination %
C.
(Purity % × Germination %) ÷ 100
D.
Purity % ÷ Germination %
Question No. 9
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What does seed vigour indicate?
A.
Genetic purity level
B.
Ability to emerge in varying field environments
C.
Physical appearance of seeds
D.
Storage duration capacity
Question No. 10
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Why might seeds with similar germination percentages show different field performance?
A.
Different moisture content
B.
Vigour differences between seed lots
C.
Varying physical purity
D.
Different storage conditions
Question No. 11
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What is the most important factor influencing seed viability during storage?
A.
Temperature fluctuations
B.
Light exposure
C.
Moisture content
D.
Container type
Question No. 12
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How does moisture content affect seeds in porous containers?
A.
It remains constant
B.
It fluctuates with atmospheric humidity
C.
It decreases continuously
D.
It increases during dry seasons
Question No. 13
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Why is seed moisture content important for processing?
A.
To determine selling price
B.
To avoid embryo damage
C.
To improve appearance
D.
To reduce processing time
Question No. 14
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What should seeds be free from to maintain good health?
A.
Genetic variations
B.
Size differences
C.
Seed-borne diseases and insect infestation
D.
Moisture fluctuations
Question No. 15
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Why is uniformity of seed size important?
A.
Better storage capacity
B.
Machine sowing and precision planting
C.
Higher germination rates
D.
Reduced moisture loss
Question No. 16
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What is generally believed about bolder seeds compared to smaller seeds?
A.
They store better
B.
They yield more
C.
They have higher moisture
D.
They are more disease resistant
Question No. 17
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When was the International Seed Testing Association (ISTA) established?
A.
10 July 1924
B.
10 July 1934
C.
15 August 1924
D.
15 August 1934
Question No. 18
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How many countries approximately have ISTA membership?
A.
About 40
B.
About 60
C.
About 80
D.
About 100
Question No. 19
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What constitutes a quality control system in seed programmes?
A.
Only seed testing procedures
B.
Only certification processes
C.
All aspects of quality seed production and verification
D.
Only storage and transportation
Question No. 20
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At what stages is seed quality affected?
A.
Only during production
B.
Only during storage
C.
Production, processing, storage, and transportation
D.
Only during processing and transportation
Question No. 21
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What happens when contaminated seeds are sown?
A.
No significant effect
B.
Higher yield is obtained
C.
Lower yield is produced
D.
Only appearance is affected
Question No. 22
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What is the relationship between high germination percentage and vigour?
A.
Always directly proportional
B.
Never related
C.
Generally associated but not always true
D.
Always inversely proportional
Question No. 23
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What type of test is used to assess genetic purity?
A.
Laboratory germination test
B.
Moisture content test
C.
Field-plot test
D.
Physical purity test
Question No. 24
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Why should shrivelled seeds be removed during processing?
A.
They are too small
B.
They indicate poor quality
C.
They have high moisture
D.
They are difficult to plant
Question No. 25
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What impression do uniform, bold seeds give to buyers?
A.
Technical superiority
B.
Good psychological impression
C.
Higher price value
D.
Guaranteed performance
Question No. 26
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What is the goal of minimum quality standards in seed programmes?
A.
To set achievable targets
B.
To maintain minimum acceptable quality
C.
To work toward highest quality possible
D.
To reduce production costs
Question No. 27
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Which factor makes cross-pollinated crops more challenging for genetic purity maintenance?
A.
Slower growth rate
B.
Susceptibility to diseases
C.
Tendency to lose specific characters through cross-fertilization
D.
Higher moisture requirements
Question No. 28
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What does the degree of aliveness in seeds refer to?
A.
Germination percentage
B.
Vigour
C.
Physical purity
D.
Genetic purity
Question No. 29
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Why are seeds sold by weight significant in relation to moisture content?
A.
Heavier seeds are better
B.
Weight determines quality
C.
Moisture content indicates water being sold with seed
D.
Weight affects germination
Question No. 30
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What is the primary method for controlling genetic purity in the field?
A.
Chemical treatment
B.
Seed certification process
C.
Size grading
D.
Moisture testing
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