Which of the following is generally used for induced mutagenesis in crop plants?

Related Mcqs:

1. The plants commonly sown for crop rotation are :

   A. Cajanus and Dalbergia
   B. Cajanus and Aeschynomene
   C. Dalbergia and trigonella
   D. Trigonella and Trifolium

2. Plants growing near the sea whore are generally resistant to:

   A. Lodging
   B. Erosion
   C. Salt spray
   D. Injuries

3. The mangrove plants are generally characterised by:

   A. Mircophylly
   B. Pneumatophores and vivipary
   C. Absence of aerenchyma
   D. Poor water storage

4. Desert plants are generally:

   A. Succulents
   B. Heterophyllous
   C. Herbaceous
   D. Viviparous

5. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

6. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

7. Among the plants listed, point out one that does not fit into ecological group represented by the other plants:

   A. Acacia
   B. Aloe
   C. Euphorbia
   D. Rhizophora

8. Among the plants listed, point out one that does not fit into biological group represented by other plants

   A. Euphorbia
   B. Acacia
   C. Vallisneria
   D. Aloe

9. Flowering is induced if germinating seeds are exposed to:

   A. Low temperature
   B. High Temperature
   C. Temperature below freezing
   D. Temperature above 45 degree C

10. Spraying of DDT on crop produces pollution of:

    A. Air only
    B. Air and soil only
    C. Air, soil and water
    D. Air and water only