Plants

There are three types of plants - Grass, Shrubs and Tree.

Types of Plants

1. Grass - grass and grass related plants are mostly seasonal like carrot, radish, etc.

2. Shrubs - some plants stem come out as branch on earth and live for many years like rose, hibiscus, etc.

3. Tree - a thick and long bark of wood which has many branches like neem, mango, etc.

Organ Systems

There are two important organ system of every plant:

  1. Root system
  2. Shoot system

The basic structure of every plant is almost the same. The difference will be of colour, form, shape of leaves, colour of flowers and shapes of fruits, etc.

If there have been no green plants then humans and animals cannot love. Plants make their own food with sunlight.

Root System

This is the part below the land. Seeds are sown in soil. First of all, parts related to roots come out in plants. The primary roots provide water and mineral to plants. They are divided into two parts.

1. Primary root - comparatively the thicker part in the mid of the plant.

2. Secondary roots - these are numerous thin roots coming out of primary root. They absorb water and mineral salts from soil to the plants.

There are four main characteristics of roots:

  1. Roots always grow below the soil 
  2. They always move towards water. 
  3. Roots always move towards light. 
  4. Roots don't have green colour.

There are two important works of roots:

  1. Fixing plant - they make plant stable and straight on land.
  2. Absorb - they absorb water and mineral salt from soil and provide nutrition to plants.

Roots do many other works in special plants - they store food in some plants like carrot, radish, turnip, beetroot, sweet potato, etc.

Some new plants also grow from the roots of other plants. Example - dahlia. 

Shoot System

Part of the plant above the soil.

Stem: it is that part of plant which is above the soil.

Stamen: this is the part of plant above the soil having branches, leaves, fruits and flowers.

Bark / Trunk: the middle part between two stamens.

Branch: secondary stem coming out of main stem. 

Leaves: these are thin and sharp mostly green coloured part from where plants prepare their own food.

Branch point: last end of stem and branches having small and numerous leaves.

Flower: part of plant which is most colourful.

Fruit: this part is developed in fruit and many new plants grow from there.