Biology

Plant Propagation Techniques

660 Questions

Plant propagation techniques cover both natural and artificial methods of cultivating plants, including micropropagation, tissue culture, and layering. These botanical concepts evaluate how desirable characteristics are multiplied and transferred into new plants. Questions on this topic routinely feature in the biology segment of various state and central competitive exams.

Micropropagation methodsArtificial vegetative propagationPlant tissue cultureLayering techniquesMeristem differentiation

Plant Propagation Techniques Questions

Multiple choice
  1. Sugarcane is multiplied by

  1. Seeds

  2. Root Cuttings

  3. Stem cuttings

  4. Leaves

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

2Stems take part in vegetative propagation

Multiple choice

Potato is grown from

  1. Cutting of aerial stems

  2. Cutting of tubers having depressions

  3. Cuttings of tubers without depressions

  4. Cuttings of roots

  5. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

potato has several depressions young plants are formed from these depressions

Multiple choice

Grafting is most successful in

  1. Dicots

  2. Monocots

  3. Pteridophytes

  4. Bryophytes

  5. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is successful in Dicots as Dicots have vascular cambiumIn grafting cambium helps in binding the two parts of the stem.

Multiple choice biology food production uses of animals agro-complimentary occupations improvement of crop production

Which of the following process is helpful in hybrid seed production?

  1. Embryo rescue

  2. Apomixis

  3. Polyembryony

  4. Somatic hybridisation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Apomixis in flowering plants is defined as the asexual formation of a seed from the maternal tissues of the ovule, avoiding the processes of meiosis and fertilization, leading to embryo development. 
  • It plays an important role in hybrid seed production. The method of producing hybrid seeds by cultivation is very expensive for farmers. Also, by sowing hybrid seeds, it is difficult to maintain hybrid characters as characters segregate during meiosis.
  • Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost-effective method for producing seeds.
  • So, the correct answer is 'Apomixis'.
Multiple choice biology food production uses of animals agro-complimentary occupations improvement of crop production

One way of incorporating desirable characters into crop varieties is by 

  1. Fertilization

  2. Leaching

  3. Hybridization

  4. Composting
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

One way of incorporating desirable characters into crop varieties is by hybridisation. Hybridisation refers to crossing between genetically dissimilar plants.

Thus, the correct answer is option C.

Multiple choice biology food production uses of animals agro-complimentary occupations improvement of crop production

........... is a technique which involves the union of two genetically dissimilar parents.

  1. Clonal propagation

  2. Crop rotation

  3. Hybridization

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The crossing between two plants of different species to produce a new variety is called hybridization. The parent plants belong to different species and are genetically dissimilar to each other. The new plant which is produced is known as the hybrid which possesses superior characters of both the parent plants. The hybrid is called as hybrid vigour which has better characteristics when compared to the parental types. The traits which are considered for hybridization are resistance to pests, insects and diseases, an increase in the productivity and high yielding, tolerance to adverse conditions, etc. 
Thus, the correct answer is option C. 
Multiple choice botany plant breeding biotechnology for improved food quality plant breeding for food production

The scientific process by which crop plants are enriched with certain desirable nutrient is called

  1. Crop protection

  2. Breeding

  3. Bio-fortification

  4. Bio-remediation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bio-fortification is the specific scientific method used to increase the concentration of vitamins and minerals in crops. It is distinct from crop protection or remediation.

Multiple choice botany plant breeding biotechnology for improved food quality plant breeding for food production

Breeding of crops with high levels of minerals, vitamins and proteins is called

  1. Micropropagation

  2. Somatic hybridisation

  3. Biofortification

  4. Biomagnification
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biofortification is the correct term for breeding crops with higher levels of minerals, vitamins, and proteins. Biomagnification refers to toxin accumulation in food chains, somatic hybridization is a lab technique, and micropropagation is rapid cloning.

Multiple choice biology organisation of the organism introduction to cell what are the living organisms made of component of the cell

Axenic culture is best defined as 

  1. Cell cultures

  2. Cell cultures free from micro-organisms

  3. Cell cultures of insectivorous plants

  4. Cell cultures free from other micro-organisms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Axenic culture refers to a culture that is free from any other living organisms, meaning it contains only the specific organism being studied.

Multiple choice biology living organisms and their surroundings living organism living vs nonliving living vs non living

Plant growth is 

  1. Limited

  2. Unlimited

  3. Diffused

  4. Both (A) and (B)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Growth can be defined as an irreversible permanent increase in size of an organ or its parts or even of an individual cell. Generally, growth is accompanied by metabolic processes (both anabolic and catabolic), that occur at the expense of energy. Therefore, for example, expansion of a leaf is growth. Plant growth is unique because plants retain the capacity for unlimited growth throughout their life. This ability of the plants is due to the presence of meristems at certain locations in their body. The cells of such meristems have the capacity to divide and self-perpetuate. The product, however,soon loses the capacity to divide and such cells make up the plant body.This form of growth where in new cells are always being added to the plant body by the activity of the meristem is called the open form of growth.