Botany Multiple Choice Questions and Answers

31. Cryopreservation is a technique used for

1. Crystallization of food
2. Food packing
3. Seed saving
4. Preservation of excess production of vegetables

32. Cutting is not suitable for

1. Lime
2. Sugar-cane
3. Oleander
4. Tapioca

33. Disadvantages of natural vegetative propagation includes

1. lack of dispersal mechanisms
2. no fertilization is involved
3. area is quickly colonized
4. daughter plants can grow quickly

34. Eutrophication results in reduction of

1. Dissolved nitrate
2. Dissolved Oxygen
3. Mineral salts
4. Parasitic protozoa.

35. Example of natural vegetative propagation does not include

1. Corals
2. bulbs
3. corms
4. rhizomes

36. Example of plant in which vegetative propagation is occurred by leaves is called

1. Cannabisn
2. Chrysanthemum
3. Cryophyllum
4. Brassica

37. Examples of Corm include

1. Gloriosa
2. Canna
3. Lallang
4. Ginger

38. External agencies are not required in

1. natural vegetative propagation
2. sexual reproduction
3. bisexual reproduction
4. trisexual reproduction

39. For successful grafting, stock and scion shall be

1. Of different species
2. Of same species
3. Of similar groups
4. Of different class

40. Green house effect is related to

1. Increased growth of green algae
2. Global warming
3. Cultivation of vegetables in house
4. Development of terrace gardens.