Strategies for Enhancement in Food Production - Online Test

Q1. Cutting of anthers from the bisexual flowers of female parents is called
Answer : Option B
Explaination / Solution:

Emasculation is the technique of removing anther from bisexual flower to prevent self-pollination. The stigma is further covered with butter paper to prevent air born pollination.

Q2. Which of the following variety of wheat is resistant to leaf and strip rust and hill bunt disease?
Answer : Option D
Explaination / Solution:

Himgiri wheat variety is resistant to disease like leaf and strip rust and hill bunt disease that cause great loss of productivity due to loss of plant parts.

Q3. Inbreeding is necessary if you want to evolve a
Answer : Option B
Explaination / Solution:

Pure line is necessary for carrying out breeding programmers. Pure line is obtained by inbreeding plants followed by test crossing until we get homozygous plants for particular traits.

Q4. Which of the following helps in absorption of phosphorus from soil by plants?
Answer : Option C
Explaination / Solution:

Anabaena is a photoautotrophic algae that generally grows in rice field. It increase the nitrogen in soil along with it also help in absorption of phosphorous from the soil by the plants.

Q5. Soma clones are obtained by
Answer : Option B
Explaination / Solution:

Genetic engineering is the technique of manipulating the genome of an organism. The plants produced through genetic engineering technique that are genetically identical to the original plant from which they are produced are called soma clones.

Q6. Which one of the following is commonly used in transfer of foreign DNA into crop plants?
Answer : Option B
Explaination / Solution:

Genetically modified foreign DNA is transferred into crops plants through a vector. Agrobacterium tumefaciens is most common bacterium used for this purpose.

Q7. Crosses between two plants by the same variety are called
Answer : Option B
Explaination / Solution:

The crosses between two plants of same varieties is called intravarietal cross. The hybrid obtained from intravarietal cross is more vigorous as they are heterogenic.

Q8. Heterosis means
Answer : Option D
Explaination / Solution:

Hybrid vigour is obtained from hybridization between two plants containing desired traits. Hybrid vigour is also called heterosis as it contains genes from different plants.

Q9. In which crops is the method of mass selection applied
Answer : Option B
Explaination / Solution:

In cross pollinated plants, the newly developed plants have variation and some plant have new traits. Mass selection method is used to select better variety of plants from large number of variant.

Q10. "Jaya" and "Ratna" developed for green revolution in India are the varieties of
Answer : Option D
Explaination / Solution:

Jaya and Ratna are varieties of maize developed by Indian council of agricultural research. These varieties are high yielding and resistance to disease.