Tag: plant breeding for disease resistance and insect resistance

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Questions Related to plant breeding for disease resistance and insect resistance

Multiple choice botany plant breeding plant breeding for disease resistance and insect resistance method of plant breeding for crop improvement plant breeding for food production

Cattle feed should contain 

  1. roughage

  2. concentrate

  3. both of these

  4. none of these.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cattle diet varies from one period to another period. Generally the diet of cattle includes 15-10% of roughage and rest of them includes concentrate and other materials.

Multiple choice botany plant breeding plant breeding for disease resistance and insect resistance method of plant breeding for crop improvement plant breeding for food production

Haploid plants are preferred over diploids for mutation study because in haploids

  1. Recessive mutations express immediately

  2. Induction of mutations is easier

  3. Culturing is easier

  4. Dominant mutations express immediately.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Haploid plants contain only one set of chromosomes. Because there is no second allele to mask the effect of a recessive mutation, any mutation that occurs will be expressed phenotypically immediately.

Multiple choice botany plant breeding plant breeding for disease resistance and insect resistance method of plant breeding for crop improvement plant breeding for food production

The increase in crop yield with green manure is approximately

  1. 1-10%

  2. 10-20%

  3. 30-50%

  4. 60-80%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The amount of humus found in the soil also increases with higher rates of decomposition, which is beneficial for the growth of the crop succeeding the green manure crop used, and its management, its approach that of soil organic matter and microbial biomass. This resulted in the increase of the yield of the crops to about 25%- 35%.

So, the correct option is '30-50%'.