MCQ on Plant Sciences

 

1. Seed multiplication ratio of maize hybrids is
   A. 1:100
   B. 1:50
   C. 1:200
   D. 1:300

2. The basic seed processing machine is
   A. Specific gravity separator
   B. Air screen cleaner
   C. Electronic colour sorter
   D. Spiral separator

3. Supplementary pollination is required for
   A. Rice
   B. Safflower
   C. Sorghum
   D. Cotton

4. The tag colour of foundation seed is
   A. Azure blue
   B. White
   C. Purple
   D. Golden yellow

5. In air screen cleaner, the top screen does the function of
   A. Grading
   B. Aspiration
   C. Scalping
   D. Blowing

6. Journal published by the ISTA is
   A. Seed Research
   B. Seed Science & Technology
   C. Crop Science
   D. Seed Science

7. The minimum germination percentage in soybean
   A. 70
   B. 60
   C. 90
   D. 80

8. The hybrid seed production method adopted in sunflower
   A. PGMS
   B. GMS
   C. CGMS
   D. CMS

9. Three generation system of seed multiplication is
   A. BS–CS–FS
   B. FS–BS–CS
   C. CS–FS–BS
   D. BS–FS–CS

10. Cob sorting in maize is done to identify
    A. Diseased cob
    B. Matured cob
    C. Big size cob
    D. Off-type cob

11. The book on seed viability was written by
    A. Basu, R.N.
    B. Ellis
    C. Frederic Nobbe
    D. Roberts, E.H.

12. The seed which will not germinate under normal environmental conditions is called as
    A. Live seed
    B. Dead seed
    C. Dormant seed
    D. Rejected seed

13. Inflorescence in carrot flower is called as
    A. Protandrous
    B. Compound umbel
    C. Protogynous
    D. Raceme

14. A certificate from recognised plant quarantine service that indicates that a sample is free from disease or pest is called as
    A. DUS certificate
    B. Certification
    C. Quarantine
    D. Phytosanitary certificate

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