Define bud. Explain the types of buds based on location.

Explanation

Buds are the growing points surrounded by protective scale leaves.
1. Terminal bud or Apical bud : These buds are present at the apex of the main stem and at the tips of the branches.
2. Lateral bud or Axillary bud : These buds occur in the axil of the leaves and develop into a branch or flower.
3. Extra axillary bud : These buds are formed at nodes but outside the axil of the leaf as in Solanum americanum.
4. Accessory bud: An extra bud on either side (collateral bud) or above (superposed bud or serial bud) the axillary bud. e.g. Citrus and Duranta.