Tag: common modes of vegetative propagation

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Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Consider the following statements.
Tissue culture is recommended for.
a. Multiplication of elite genotypes
b. Developing virus-free plants
c. Production of secondary metabolites
d. Induction of polyploidy
e. Of useful trees
Of this statements.

  1. $1, 2$ and $4$ are correct
  2. $1, 2$ and $3$ are correct
  3. $1, 3$ and $4$ are correct
  4. $2, 3$ and $4$ are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Which of the following is not a common procedure in tissue culture of plants?

  1. Shoot tip culture for the purpose of micropropagation

  2. Leaf, stem, and root culture for the purpose of cell suspension cultures

  3. Protoplast culture for the purpose of genetic engineering of plants

  4. Culture of hybridized mature plant cells
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A) Shoot tip culture may be described as the culture of terminal portion of a shoot comprising the meristem together with primordial and developing leaves and adjacent stem tissue. It is a common process used for micropropagation

B) Suspension culture is a type of culture in which single cell or small aggregates of cells mul­tiply while suspended in agitated liquid medium. It is the process done in tissue culture using plant part such as leaf, stem, roots etc.
C) Protoplasts are naked plant cells without the cell wall, but they possess plasma membrane and all other cellular components. Protoplasts of different species can be fused to generate a hybrid and this process is referred to as somatic hybridization. Genetic transformations can be achieved through genetic engineering of protoplast DNA
D) After hybridization or suspension culture, a new mature plant is produced. This plant is identical to its parent plant
So, the correct answer is 'culture of hybridized mature plant cells'

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Agitation during tissue culture serves for

  1. Aeration of the culture

  2. Constant Mixing

  3. Breakage of cell aggregates in small particles

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium of known composition. Plant tissue culture is widely used to produce clones of a plant in a method known as micropropagation. Agitation during tissue culture serves for:

  • Aeration of the culture
  • Constant Mixing
  • Breakage of cell aggregates in small particles

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

What is micropropagation?

  1. Germination of seed with cotyledons above the soil.

  2. A technique to obtain new plants by cultivating the cells or tissues in culture medium.

  3. The mature stage of endosperm.

  4. To manufacture hormones.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Tissue culture, also known as micropropagation, is a propagation method used to produce plants under sterile conditions. 
  • This method uses plant explants (plant parts) or seeds that have been sterilized before being placed in containers with a growing medium (usually a gel) that has some nutrients added. 
  • Micropropagation is the growing of plants from meristematic tissue or somatic cells of superior plants on nutrient suitable media under controlled aseptic physical conditions.
Therefore, the correct answer is option B.

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

A clone is a group of individuals obtained through______________

  1. Hybridisation

  2. Cross-pollination

  3. Self-pollination

  4. Micropropagation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Cells derived from a single cell through mitosis constitute a clone and the process of obtaining clones is called cloning (asexual progeny of a single individual make up a clone). 
  • Plant tissue culture or micropropagation is the technique of maintaining and growing plant cells, tissues or organs especially on artificial medium in suitable containers under controlled environmental conditions.

Therefore, the correct answer is option D.

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Consider the statements A-D.
A. Production of plants in an artificial synthetic medium is known as micro propagation.
B. Callus is the cellular mass of tissue developed in the early stage of tissue culture.
C. Orchids, dahlia and carnation plants are raised by means of micropropagation.
D. Air layering (gootee) is practised in grape, rose, raspberry and strawberry plants.
The correct statements are given in

  1. Statements A, B and C

  2. Statements A and B

  3. Statements B, C and D

  4. Statements A, B, C and D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Micropropagation is a more recent practice for growing plants in a culture medium by providing them with all the necessary nutrients and inducing their growth artificially. So, statement A is correct.
  • In the case of growth of plants through asexual means using tissue culture, first of all, the mass of cells is formed which is then differentiated into different cells and forms the entire plant body. This cell mass is called callus. So, statement B is also correct.
  • Examples of micropropagation growth include orchids, dahlia, etc. So, the statement C is also correct.
Examples of Gootee include lychee, pili nut, jack fruit, etc.
So, statement D is incorrect.

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Micropropagation means

  1. Preparation of tissue in the laboratory

  2. Genetic engineering

  3. Growth of plantlets in nutrient media in the laboratory

  4. Preparation of new tissue by DNA recombination
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Micropropagation is a tissue culture technique for plant propagation in which tissue is taken from a plant and grown in a laboratory to produce plants that are genetically identical to the parent. The small portion of plant tissue, sometimes only a single cell, is placed on a growth medium, typically containing sucrose as an energy source.

Therefore, the correct answer is option C.

Multiple choice botany tissue culture common modes of vegetative propagation plant breeding for food production plant tissue culture

Callus is not produced in

  1. Wound

  2. Tissue culture

  3. Suspension culture

  4. Sexual reproduction.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Callus is an undifferentiated mass of cells, that is formed to heal wounds, in tissue culture and suspension culture. However, they are not produced sexual reproduction as it includes formation of gametes and fusion.
So the correct answer is 'Sexual reproduction'
Multiple choice botany reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation biotechnological regulations pcr

Vegetative reproduction is most favourable with which part of plant.

  1. Stem

  2. Root

  3. Leaves

  4. Patra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • A stem can easily be cut out and planted at a different location for growing a new plant.
  • Steam is most easy to manage among the given parts of the plant.

So, the correct answer is 'Stem'.