Botany and Plant Science

In a plant with a taproot system, the primary taproot is the largest, most central and most dominant root. 

Unicellular hair on root occur in the root hair zone.

Some foliar buds can produce foliar roots, e.g. Bryophyllum, Begonia and Pogostemon.

The root cap is absent in some parasitic plants and some aquatic plants, in which a sac-like structure called the root pocket may form instead. These are present in duckweed and water hyacinth.

Rafflesia and striga are partial root parasites.

Mustlatoe is a partial stem parasite.

Bulbils are essential for reproduction in Oxalis. 

A corm grows vertically.

Tendrils pea plants are homologous with leaflets.

Moniliform or beaded roots are those roots which are swollen at frequent intervals.

Rhizophora develops respiratory roots, which develop from underground roots. These roots are called pneumatophores. 

Adventitious buds are subnormal buds found at points along the stem. They arise from latent or dormant buds in the leaf axils of the young stem and persist for an indefinite number of years within the cortical-cambial zone.

Pulvinus leaf base is an important feature of Legume family. 

 All the florets are disc florets in vernonia.

 Gemmules are internal buds found in sponges and are involved in asexual reproduction. It is an asexually reproduced mass of cells, that is capable of developing into a new organism i.e., an adult sponge.