Question

Which of the following is not an example of the artificial propagation?

• A. Fragmentation- the separation of plant parts to develop into whole plants
• B. Grafting- the attachment of a scion onto a stock plant that provides a root system
• C. Apomixis- the asexual reproduction of seeds
• D. Production of fruit without fertilization in parthenocarpic plants

Answer 1

Answer: (D)

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.

Fragmentation- Fragmentation in multicellular organisms is a form of asexual reproduction in which an organism is split into fragments. Each of these fragments develops into matured, fully grown individuals that are identical to their parents.

Grafting- The cut stem of a plant having roots and fixed in the soil is called stock which is the lower part of a plant having the roots. The cut stem of another plant without is called 'scion' which is the upper part of a plant which may have left on it. The cut soon heals and the stock and scion of two plants grow together and become one plant.

Apomixis- Apomixis is defined as replacement of the normal sexual reproduction by asexual reproduction, without fertilization. Replacement of the seed by a plantlet or replacement of the flower by bulbils is categorized as types of apomixis.

Parthenocarpic plants: Parthenocarpy is the natural or artificially induced production of fruit without fertilization of ovules, which makes the fruit seedless. Parthenocarpy occasionally occurs as a mutation in nature.

So the correct option is 'production of fruit without fertilization in parthenocarpic plants'.