This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
Time: Three Hours] [Maximum Marks : 80
Note :
- There are seven questions in all.
- Question No. 1 is compulsory and carries 8 marks.
- Question Nos. 2 to 7 carry equal marks.
- Draw well labelled diagrams wherever necessary.
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- (A) Fill in the blanks :
- When two alleles for a trait received from the parents are different the organism is said to be ________ for this trait. ½
- Headquarter of NBPGR is ________. ½
- ________ selection has been commonly used breeding scheme applied to genetically variable and homozygous population of self pollinated crops. ½
- Extra chromosomes are present or missing in the cell; such condition is known as ________. ½
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- Individuals which contain two different chromosomes in triplicate instead of two times 2N+ 1+ 1)are called as ________. ½
- Double trisomics
- Double tetrasomic
- Double pentasomic
- Diploids
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- ________ originates spontaneously at a low frequency. ½
- Diploid
- Aneuploid
- Both
- None
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- When endospore development is ________, the condition is generally known as endosperm abortion. ½
- Maximum
- Neutral
- Poor
- None
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- Relative humidity affects seed ________ content because seeds are hygroscopic. ½
- Heat
- Air
- Soil
- Moisture
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- Which factors reduce the quality of the seed ? 1
- Define epistasis. 1
- Which rice is a gamma ray induced semidwarf mutant variety resistance to lodging ? 1
- The ratio of dihybrid cross is ? 1
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- Comment on :
- Gene interaction. 4
- Acclimatization. 4
- Law of segregation. 4
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- Quarantine. 4
- Plant introduction agencies in India. 4
- Law of independent assortment. 4
- Give detail account of artificial mutations and physical and chemical mutation. 12
OR
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Comment on :- Mass selection. 6
- Hybridization procedure in cross pollinated crops. 6
- Comment on :
- Classification of Polyploidy 4
- Causes of disease resistance 4
- Allopolyploidy. 4
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- Application of breeding for disease resistance. 4
- Anther culture. 4
- Effects of aneuploids. 4
- Comment on :
- Pollen viability. 4
- Genetic male sterility. 4
- Difference between seed and grain. 4
- Genetic purity of varieties. 4
- Factors affecting seed set. 4
- Uses of self incompatibility. 4
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- Comment on :
- Pollination for hybrid seed production. 6
- Seed village concept. 6
Give detail account of factors affecting the choice of area of seed production (any three). 12
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- Comment on :
- Selection of land for seed production. 4
- Harvesting and threshing of seeds. 4
- Seed plot technique of potato multiplication. 4
- Indian seed industries. 4
- Special agronomic management. 4
- Roughing in wheat. 4
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This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university