Germplasm Characterisation

Q. The collection of all the diverse alleles of all genes of a given crop is termed as itscollection.

1. germplasm
2. allele
3. genophore
4. genome

Q. The germplasm collection refers to the

1. collection of superior varieties of plants
2. collection of plants/seeds having all diverse alleles for all genes in a crop
3. collection of all plant specimens of an area
4. collection of pollen grains and embryos of species of an area

Q. (a) Write the two limitations of traditional breeding techniques that led to promotion of micropropagation.

(b) Mention two advantages of micropropagation.

(c) Give two examples where it is commercially adopted. [3]

Q. Germplasm collection is necessary because

1. Genetic variability is usually present in the wild relatives
2. Wild relatives can be present in different geographical locations
3. Desirable traits may be present in hundreds of different variants of a species
4. Only B and C

Q. What causes mutations?

1. Colchicine
2. Cosmic rays
3. Crossing over
4. Gamma rays

Q. Which of the following statements describes germplasm characterization?

1. Allows compilation of all distinguishable traits of a particular accession
2. Enables quick and easy discrimination of phenotypes
3. It is a preliminary evaluation of distinguishable traits for a crop
4. Gives information about the genetic diversity of the crop

Q. Regarding assertion and reason, which is the correct option
Assertion [A]: A breeder can manipulate the different combinations of alleles in a germplasm in order to begin the process of creating a superior plant.
Reason [R]: The main objective of germplasm collection is to preserve the genetic diversity or genetic stock.

1. Both A and R are true and R explains A
2. Both A and R are true but R does not explain A
3. A is true and R is false
4. Both A and R are false

Q. Germplasm for a particular species includes

1. Seeds
2. Plants or plant parts
3. Tissues or cells
4. Only A and B

Q. Regarding assertion and reason, which is the correct option
Assertion [A]: A breeder can manipulate the different combinations of alleles in a germplasm in order to begin the process of creating a superior plant.
Reason [R]: The main objective of germplasm collection is to preserve the genetic diversity or genetic stock.

1. Both A and R are true and R explains A
2. Both A and R are true but R does not explain A
3. A is true and R is false
4. Both A and R are false

Q. All the diverse alleles for all genes of a given crop is termed as its ___.

1. Genome
2. Genotype
3. Germplasm
4. Genophore

Q. Steps for germplasm characterization involve

1. testing crops under different environmental conditions
2. biochemical and molecular characterization
3. checking for disease resistance
4. cross breeding of plants

Q.

Why are mice commonly used as transgenic animals?

Q. Germplasm characterisation under different field conditions ensures

1. identification of new crop varieties
2. identification of gaps in the germplasm collection
3. identification of valuable germplasm for breeding programmes
4. expression of the heritable traits of the plant

Q. Germplasm characterisation under different field condition ensures

1. Expression of the heritable traits of the plant
2. Identification of gaps in the germplasm collection
3. Identification of valuable germplasm for breeding programmes
4. Identification of new crop varieties
5. A, B and C

Q. What is Conjugation? Who discovered it and in which organism?

Q.

The entire collections of plants/seeds having all diverse alleles for all the genes of a crop is called:

1. Germplasm

2. Herbarium

3. Genome

4. Gene library

Q. Which of the following statements describes germplasm characterization?

1. Allows compilation of all distinguishable traits of a particular accession
2. Enables quick and easy discrimination of phenotypes
3. It is an evaluation of distinguishable traits for a crop
4. Gives information about the genetic diversity of the crop

Q. Wild Rice / Oryza nivara helped in introducing in cultivated rice the trait of ____________.

1. High yield
2. Resistance to bacterial blight
3. Resistance to grassy stunt virus
4. Resistance to Sesame disease

Q. What do you understand by molecular probes? Explain its utility.

Q. Steps for germplasm characterization involve

1. testing crops under different environmental conditions
2. biochemical and molecular characterization
3. checking for disease resistance
4. cross breeding of plants