Q. No.Consider the given two statements:
| I: | Success of a breeding program usually depends on the creation of the desired genetic variation. |
| II: | Any character of a crop can be improved only when genetic variation is present for the character. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Which of the following steps in a plant breeding program actually brings about the improvement?
1. Germplasm collection
2. Hybridization
3. Selection of superior recombinant
4. Testing of the cultivars
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The selection in cross-pollinated crops ultimately aims at:
| 1. | selecting the most desirable pureline. |
| 2. | increasing the frequency of superior genotypes without reducing heterozygosity. |
| 3. | removing all true breeding varieties from the germplasm and hybridizing only heterozygous varieties. |
| 4. | converting purelines into apomicts to prevent segregation of desired traits. |
The sobriquet ‘Father of Green Revolution’ is used for:
| 1. | Norman Borlaug | 2. | M. S. Swaminathan |
| 3. | Gordon Conway | 4. | Elvin Stakman |
Identify the variety of sugarcane from which [with hybrids] about 70% of the sugar produced worldwide comes:
| 1. | Saccharumbarberi | 2. | Saccharumsinense |
| 3. | Saccharumofficinarum | 4. | Saccharumspontaneum |
Interspecific hybridization and chromosome doubling have led to the creation of:
I. The modern wheat, Triticum aestivum
II. The first man-made cereal, Triticale
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Consider the following statements:
| I: | Self-pollination or selfing is the extreme form of inbreeding. |
| II: | Loss of vigor associated with inbreeding is inbreeding depression. |
| III: | Self-pollinated crops do not usually show the ill effects of inbreeding. |
The correct statements are:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Consider the given two statements:
| I: | Somatic hybridization and cybridization have great potential for plant improvement. |
| II: | Somatic hybridization through protoplast fusion provides the ability to combine parent genes in higher plants to overcome sexual incompatibility among plant species or genera. |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Most plant introductions in a country like India are:
| 1. | grown directly by the farm |
| 2. | ornamental plants introduced for their aesthetic values |
| 3. | used as parents in hybridization in breeding programs |
| 4. | invasive species that cause harm to the ecosystem |
To isolate protoplast, one needs:
1. pectinase
2. cellulase
3. both pectinase and cellulase
4. chitinase.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.