Explain about artificial methods of vegetative reproduction.

Question

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Answer

Vegetative propagation is a kind of asexual reproduction which occurs with the help of vegetative plant parts.
Cutting and grafting are two methods used to propagate desired varieties of plants.
Cutting – small pieces of plant parts having one or more buds are selected for propagation, e.g, Stem cutting – Rose, Root Cutting – Blackberry and Leaf cutting – Sansevieria.
Grafting – In this method two plant parts are joined ogether (Stock – rooted plant and Scion-attached plant and they continue their growth as one plant.
When a single bud is grafted on stock plant it is called as bud grafting, e.g. Rose, Apple, Pear.

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Column A	Column B (Organisms)
1. Symbiotic nitrogen fixation	a. Nitrobacter
2. Denitrification	b. Cyanobacteria
3. Free living nitrogen fixers	c. Rhizobium
4. Nitrification	d. Paracoccus