Tag: reproduction in angiospermic plants
Questions Related to reproduction in angiospermic plants
For union between stock and scion in grafting which one is the first to occur.
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Formation of callus
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Production of plasmodesmata
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Differentiation of new vascular tissues
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Regeneration of cortex and epidermis
The process of joining of a tissue or a small part into the tissues of another plant is called Grafting. The tissue or part inserted is called stock and the plant into which foreign part is inserted is called scion. During this process, a group of cells are formed initially. It is called callus.
So, the correct option is ‘Formation of callus’.
Stem takes part in storage and perennation in
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Wheat
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Groundnut
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Radish
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Ginger
Vegetative reproduction of Agave occurs through
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Rhizome
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Stolon
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Bulbils
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Sucker
Grafting is a method of
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Artificial vegetative propagation
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Sexual reproduction
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Artificial pollination
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Cross-pollination
Grafting is an artificial propagation technique in which tissue from one plant, the scion, is attached to another, the rootstock. The rootstock produces new vascular tissue with which to feed scion the graft heals itself.
In a grafted plant, stock has $48$ chromosomes while scion has $24$ chromosomes. The chromosome number for root cells and eggs are.
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$48$ and $24$
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$24$ and $24$
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$24$ and $12$
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$48$ and $12$
The stock is the plant part containing strong root system and sicon is the plant part which contains better fruit and fruit yield. In root cells, the chromosome number remains constant, reduced half in egg cell. So the chromosome number for root cells are 48 and eggs are 12.
The technique of rapid vegetative propagation of plants of agricultural and horticultural value involving cell and tissue culture is popularly known as micropropagation.
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True
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False
Tissue culture is also called Micropropagation. it is a type of vegetative propagation for producing a large number of genetically superior and pathogen-free transplants in a limited time and space. Micropropagation is the practice of rapidly multiplying stock plant material to produce a large number of progeny plants, using modern plant tissue culture methods. Micropropagation is used to multiply plants such as those that have been genetically modified or bred through conventional plant breeding methods. It is also used to provide a sufficient number of plantlets for planting from a stock plant which does not produce seeds, or does not respond well to vegetative reproduction.
Induction of rooting in stem cutting would be most beneficial in
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Marchantia
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Wheat
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Cuscuta
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Bougainvillea
Auxin is a plant hormone that is involved in various growth and developmental processes of plant. It stimulates the induction of rooting in stem cuttings. Bougainvillea plants are primarily propagated by stem cuttings. Hence, induction of rooting in stem cutting would be most beneficial in Bougainvillea.
Which of the following is not an example of the artificial propagation?
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Fragmentation- the separation of plant parts to develop into whole plants
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Grafting- the attachment of a scion onto a stock plant that provides a root system
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Apomixis- the asexual reproduction of seeds
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Production of fruit without fertilization in parthenocarpic plants
Artificial reproduction/propagation is the creation of a new life by other than the natural means available to an organism. The process of growing many plants from one plant by man-made methods is called artificial propagation of plants. A number of methods of artificial propagation of plants are used in agriculture.
Vegetative reproduction is most favourable with which part of plant.
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Stem
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Root
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Leaves
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Patra
- 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.
Artificial vegetative propagation is a .......... method.
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Slow
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Natural
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Man-made
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Both A and C
Artificial propagation is the creation of new life by other than the natural means available to an organism. Cutting plants' stems and placing them in compost is also a form of artificial reproduction. We can grow many plants from one plant by using the man-made methods. The process of growing many plants from one plant by man-made methods is called as the artificial propagation of plants.