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

An explant is

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
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' .

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

The quickest method of plant breeding is

  1. Intoduction

  2. Selection

  3. Hybridisation

  4. Mutation breeding
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Vegetative propagation through cell or tissue culture is known as

  1. Macropropagation

  2. Cloning

  3. Micropropagation

  4. Asexual propagation
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

Callus is

  1. Undifferentiated mass of a tissue

  2. Root formation in culture media

  3. Plant hormones

  4. Plant byproduct
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

Cryobiology deals with

  1. Temperature effect

  2. Physiology

  3. Anatomy

  4. Characteristics of biomolecule
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

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

  1. Inoculant

  2. Explant

  3. Clone

  4. Somaclone
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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

  1. Tissue culture

  2. Pleuripotency

  3. Totipotency

  4. Gene cloning
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.