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Which one plant movement is unidirectional?
1. Phototaxis
2. Chemotaxis
3. Both (A) and (B)
4. Thigmotrophism
2. Chemotaxis
3. Both (A) and (B)
4. Thigmotrophism
64%
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The exchange of segments of two non-homologous pair of chromosomes is termed as
1. crossing over
2. linkage
4. transformation
4. translocation
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Spirochaetes is/are
1. a class of viruses
2. myxobacteria
3. spiral-shaped bacteria
4. richittsias
70%
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SER and RER can be distinguished with its presence in
1. protein synthesizing cells
2. protein and lipid synthesizing cells, respectively
3. carbohydrates and fat synthesizing cells, respectively
4. fat and protein synthesizing cells, respectively
2. protein and lipid synthesizing cells, respectively
3. carbohydrates and fat synthesizing cells, respectively
4. fat and protein synthesizing cells, respectively
56%
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Human Immuno Virus (HIV) contain a protein coat and genetic material and is horse chestnut shaped
1. double-stranded DNA
2. single-stranded DNA
3. single-stranded RNA
4. double-stranded RNA
63%
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Root cambium is derived from
1. primary meristem
2. secondary meristem
3. intercalary meristem
4. apical meristem
61%
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Which enzyme complex is responsible for the reduction of molecular nitrogen to the level of NH3 in root module of legume?
1. Aminase
2. Nitrogenase
3. Nitrate reductase
4. Nitrite reductase
69%
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The plants which can withstand with narrow and broad range of temperature tolerance respectively are
1. monothermal and stenothermal
2. stenothermal and monothermal
3. stenothermal and eurythermal
4. stenothermal and mesothermal
2. stenothermal and monothermal
3. stenothermal and eurythermal
4. stenothermal and mesothermal
Subtopic: Major Abiotic Factors |
79%
From NCERT
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