Morphological features are important in determining productivity of crops. Morphological characters indicate the specific habitats of living as well as the fossil plants and help to correlate the distribution in space and time of fossil plants. Morphological features are also significant for phylogeny

Primary functions:
(i) Photosynthesis
(ii) Transpiration
(iii) Gaseous exchange
(iv) Protection of buds
(v) Conduction of water and dissolved solutes.

Tuberous root:These roots are swollen without any definite shape. Tuberous roots are produced singly and not in clusters. eg.Ipomoea batatas.
Fasciculated root: These roots are in cluster from the base of the stem. eg.Dahlia, Asparagus, Ruellia.
Nodulose root: In this type of roots swelling occurs only near the tips. eg.Maranta (arrow root) Curcuma amada (mango ginger), Curcuma Zonga (turmeric).
Moniliform or Beaded root: These roots swell at frequent intervals giving them a beaded appearance. eg.Vitis, Portulaca, Momordica Indian spinach.
Annulated root: These roots have a series of ring-like swelling on their surface at regular intervals. eg.Ipecac (Psycho tria)

The study of various external features of the organism is known as morphology. Plant morphology also known as external morphology deals with the study of shape, size and structure of plants and their parts (roots, stems, leaves, flowers, fruits and seeds). Study of morphology is important in taxonomy. Morphological features are important in determining productivity of crops. Morphological characters indicate the specific habitats of living as well as the fossil plants and help to correlate the distribution in space and time of fossil plants. Morphological features are also significant for phylogeny.
Plant Morphology can be studied under two broad categories:
(i) Vegetative morphology - It includes shoot system and root system.
(ii) Reproductive morphology - It includes Flower / inflorescence, Fruit and Seed.