Botany Multiple Choice Questions and Answers

1. A common example of stem tuber is

1. Ginger
2. Garlic
3. Onion
4. Potato

2. A green house gas is

1. H2
2. CO
3. CO2
4. N2.

3. A low branch with a node is bent down and covered with soil in

1. Marcotting
2. Layering
3. Cutting
4. Budding

4. A plant breeder: waists to develop a disease resistant variety. What should he do first?

1. Hybridisation
2. Mutation
3. Selection
4. Production of crop

5. A variety or strain produced by horticultural or agricultural techniques and not normally found in natural population is called

1. Hybrid
2. Tissue culture
3. GMO
4. Cultivar

6. Acid rain is caused by

1. SO2 and NO2
2. SO2 and CO
3. NH3 and CO
4. SO2 and NH3.

7. Advantages of Artificial Methods of Vegetative Reproduction include

1. Crops with better quality
2. Crops with more yield
3. Ability to produce plants with desirable qualities
4. All of these

8. Aims of plant breeding are to produce

1. Disease-free varieties
2. High-yielding varieties
3. Early-maturing varieties
4. all of the above

9. Air pollution effects are usually found on

1. Flowers
2. Leaves
3. Stems
4. Roots.

10. Algal bloom results in

1. Global warming
2. Salination
3. Eutrophication
4. Biomagnification