Tag: common modes of vegetative propagation

Questions Related to common modes of vegetative propagation

An explant is

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

  1. dead plant

  2. part of the plant

  3. part of the plant used in tissue culture

  4. part of the plant that expresses a specific gene

Show answer
Correct Option: C
Explanation:

An explant is a part of the plant that taken out and grown in special nutritive media under sterile conditions. This is the process to generate a whole plant in tissue culture.

So, the correct option is 'Option C' .

The quickest method of plant breeding is

biology strategies for enhancement in food production common modes of vegetative propagation plant breeding for food production tissue culture

  1. Intoduction

  2. Selection

  3. Hybridisation

  4. Mutation breeding

Show answer
Correct Option: D
Explanation:

The correct answer is mutation breeding:

Plant breeding is the technique used to improve the variety of plants for human welfare. Introduction, selection, hybridization and mutation breeding are the main methods of crop improvement along with polyploid breeding, tissue culture and genetic engineering. Introduction is the process of introducing new plants from their old locality to the new one. Selection is the oldest method of plant improvement in which suitable varieties are selected. It is of two types-natural and artificial. Hybridization is the production of new varieties by crossing two or more plants having different genetical constitution. Mutation breeding is a quick way to introduce sudden changes in the genome of the plant.

Vegetative propagation through cell or tissue culture is known as

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

  1. Macropropagation

  2. Cloning

  3. Micropropagation

  4. Asexual propagation

Show answer
Correct Option: C
Explanation:

Micropropagation is culture of apical shoots, axillary buds and meristems on suitable nutrient medium to produce a genetically identical progeny. Macropropagation is production of progeny by means of conventional techniques including cuttings, air-layering and grafting. Production of genetically identical cell lineage or organisms is called as cloning. It includes both conventional and tissues culture techniques. Asexual propagation refers to production of progeny by single parent plant, it can occur through vegetative propagules (rhizome, tubers and bulb) or by artificial methods (cutting, and grafting).

Hence, the correct option is C.

What is a callus in plant tissue culture?

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

  1. Mass of parenchyma cells

  2. Mass of chollenchyma cells

  3. Mass of smooth cells

  4. None of the above

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Correct Option: A

Callus is

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

  1. Undifferentiated mass of a tissue

  2. Root formation in culture media

  3. Plant hormones

  4. Plant byproduct

Show answer
Correct Option: A
Explanation:

Plant callus is a mass of unorganized cells derived from plant tissue for use in biological research and biotechnology. In plant biology, callus cells are those cells that cover a plant wound. Callus formation is induced from plant tissues after surface sterilization and plating onto in vitro tissue culture medium. Plant growth regulators, such as auxins, cytokinins and gibberellins are supplemented into the medium to initiate callus formation or somatic embryogenesis.

So, the correct answer is 'underdifferentiated mass of a tissue'

Cryobiology deals with

biology strategies for enhancement in food production common modes of vegetative propagation plant breeding for food production tissue culture

  1. Temperature effect

  2. Physiology

  3. Anatomy

  4. Characteristics of biomolecule

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Correct Option: A
Explanation:
Physiology is the scientific study of normal function in living systems. 
Anatomy is the branch of biology concerned with the study of the structure of organisms and their parts.

Cryobiology is the branch of biology that studies the effects of low temperatures on living things within Earth's cryosphere or in science. 
So, the correct answer is 'temperature effect'

Piece of sterile plant tissue that is used for tissue culture under aseptic condition is

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

  1. Inoculant

  2. Explant

  3. Clone

  4. Somaclone

Show answer
Correct Option: B
Explanation:

Explant is any portion taken from a plant that will be used to initiate a culture. It can be a portion of the shoot or of the leaves or even just some cells. It is a piece of sterile plant tissue to be used for tissue culture under aseptic conditions. Inoculant is the active material used in an inoculation. Clones are organisms that are exact genetic copies. Somacloning is cloning of plant with a single cell. 

Thus, the correct answer is option B.

Callus was grown successfully for the first time by

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

  1. White

  2. Gautheret

  3. Nobecourt

  4. All of the above

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Correct Option: D

The study of plant and animal tissues outside the body (in a glass tube) is called

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

  1. In vivo

  2. In vitro

  3. Innate

  4. Ecdysis

Show answer
Correct Option: B

A plant cell has potential to develop into full plant. The property is called

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

  1. Tissue culture

  2. Pleuripotency

  3. Totipotency

  4. Gene cloning

Show answer
Correct Option: C
Explanation:
  • Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in an organism. 
  • For example, Spores and zygotes are examples of totipotent cells.
  • Hence a plant cell has the potential to develop into a full plant. The property is called Totipotency.
  • So, the correct answer is 'Totipotency'.