Categories of Plants

Summary

LearnNext Lesson Video

Plants are multicellular, mostly green organisms which are seen inour environment.

Classification of plants 
1) Based on
the size, nature of the stem and the life span, plants are classified into herbs, shrubs and trees There is one more category called as creepers and climbers.
a) A herb is a non-woody plant that has green and tender stem with few branches on.

  • It is usually short.
  • It has a very short life.
  • Herbs have a variety of uses like adding flavour to food, providing medicine for diseases and some with spiritual touch.
  • Mustard, Tulsi, Wheat, Gram are some of the herbs we know.

b) A shrub is taller than a herb and has stem branching out at its base.
  • Shrub is a bushy plant.
  • The stems of a shrub are not hard but thick.
  • A common place where shrubs are grown is known as shrubbery.
  • These plants live for many years.
  • Sunflower, Rose, Lime are some of the shrubs that we see around. 

c) A tree is a woody plant that has many branches on a single stem.
  • Trees serve us lot of benefits.
  • They prevent soil erosion, maintain carbon dioxide content in the air, provide us materials to make huts and to make furniture.
  • Trees are categorised based on their height, width of their trunk, overall size, and of course their age.
  • Trees are with long life span.  
  • Mango tree, Neem tree, Peepal tree are some of the trees in our surroundings.

d) Creepers are the plants with weak stems and hence cannot stand straight.
  • They grow on the ground.
  • Creepers as the name suggests creep horizontally on the ground.
  • Creepers are capable of growing new plants on their own.
  • Some creepers can also cause allergies or skin problems if touched.
  • Life time of creepers if very short.

e) Climbers are the plants that need support from other structures to grow and spread.
  • Climbers can either grow horizontally or vertically unlike creepers that grow only in horizontal direction. Lifespan is very short in climbers.
  • The climbing plants use these tendrils to cling on to the support firmly.
  • A tendril can be a modified leaf or a shoot or petiole like structure which is used by climbers to wrap around a support.
  • Different types of tendrils are leaf tendril, stem tendril, leaflet tendril, leaf tip tendril etc.
  • Climbers attract insects and reptiles by their bright coloured flowers and fragrance.

2) Depending on the presence of flowers, plants are classified into two types namely, flowering plants and non-flowering plants.
a) Flowering plants are the plants which possess distinct roots, stems, flowers and fruits. e.g. Mango, Papaya, Guava.

b) Non-flowering plants are the plants which do not have distinct roots, stem, leaves, flowers or fruits. e.g. Fern, Moss.

3) Depending on the way they obtain food, plants are classified into autotrophs and heterotrophs.
a) Autotrophs are the plants which make their own food by the process of photosynthesis by using raw materials like carbon dioxide and water. e.g. Most of the green plants.

b)Heterotrophs are the plants which depend on other organisms for their food. e.g. Insectivorous plants.

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Activities & Simulations


Activity 1
Japias.jp has created an interesting and interactive animation to deliver information related to herbs. This is devised as a template depicting the information under three topics namely, About how to raise herbs, About usages of herbs and Others covering general information about herbs. It displays value added  questions along with answers.
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Activity 2
Bgfl.org has constructed a small game based activity to make students familiar with topics related to plants. These are divided into topics like Growth of a  plant, Parts of a plant, Pollination, Activities on plants which can be tried in the class. It is an interestingly devised module which makes the student learn the entire concept by enjoying it. The game is devised in such a way that it shows different parts of the plant, types of pollination, growth in different parts of the plant etc. Added advantage is the multiple choice questions which help the student to test himself.
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1 . Reticulate and parallel venation

 

 

The arrangement of veins in a leaf is termed as venation. Venation may differ from one type of plant

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2 . What is venation? What are the two types of venation?

Sol:

The pattern in arrangement of veins in the blade of a leaf is called as venation. Two types of venation are reticulate vena

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3 . Herbs, Shrubs and Trees.

Answer.


A herb is a non-woody plant that has green and tender stem with few branches on. It is usually short. Herbs...

4 . What is the major difference between creepers and climbers?

Answer.

Climbers and creepers are weak stemmed plants which grow clinging on to any support.

Crrepers are the plants whi

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5 . Is it possible for you to find out whether a plant has taproot or fibrous roots by looking at the impression of its leaf on a sheet of paper ?

yes, we can see the venation and find out.. like if that plant has parallel venation it will have a fibrous root..(for only some plants) and...