Notes of Ch 7 Getting to Know Plants Class 6th Science

Revision Notes of Ch 7 Getting to know Plants Class 6th Science

Topics in the chapter

  • From where does a plant come? 
  • Classification of plants on the growth habit
  • Classification on the basis of life cycle
  • Parts of plants and their functions 

From where does a plant come?

→ A plant comes from a seed.

→ This seed is covered with seed coats, which protect the seed.

→ This seed contain a baby plant inside, it has a tiny root towards the outer side.

→ The tiny root is termed as radicle.

→ It also has a tiny shoot towards the inner side.

→ The tiny shoot is termed as plumule.

Classification of plants on the growth habit

→ The plants are classified in five types based on growth habit:
(i) Herbs
(ii) Shrubs
(iii) Trees
(iv) Climbers
(v) Creepers

(i) Herbs

→ Have soft, green and weak stems. Usually its height is short and may not have many branches. It is used for food, flavouring, medicine or perfume.

→ Examples: rice, wheat, maize, sunflower, mint, etc.

(ii) Shrubs

→ They are bushy and have hard stems which do not bend easily. These plants have their stem branching out near the base.

→ Examples: lemon, China rose, jasmine, etc.

(iii) Trees

→ These are big plants which have strong and long stem. Live for many years.

Examples: mango, neem, banyan, coconut, etc.

(iv) Climbers

→ Plant that take support on neighbouring structures and climb up are called climbers. It has weak stems and cannot stand erect.

→ Examples: pea, grapes etc.

(v) Creepers

→ Plants which creep on the ground and spread out is called creepers. It has weak stems that cannot stand upright. Example: pumpkin and watermelon.

Classification of Plants on the basis of life cycle

→ The Plants are classified in three types on the basis of life cycle:
(i) Annuals
(ii) Biennials
(iii) Perennials

(i) Annuals: Plants whose life cycle is completed in one season. Examples: wheat and mustard.

(ii) Biennials: Plants whose life cycle requires two seasons for completion. Example: carrot, radish and potato.

(iii) Perennials: Plants whose life cycle runs for more than two seasons. Example: guava, babul and palm trees.

Parts of plants and their function

→ Plants are divided in 3 types based on their functions:
(i) Root System
(ii) Shoot System
(iii) Flowers

(i) Root system

→ The underground part of a plant is called root.

Types of root system:

(a) Tap root system

→ Primary root comes out from the seed after germination. It is also called true roots.

(b) Fibrous root system

→ These roots grow from the base of the stem have a bushy appearance. Fibrous roots are thin and almost equal in size.

Functions of roots

→ Help to anchor the plant firmly into the ground.

→ Root help plants to absorb water and nutrients from soil.

(ii) Shoot system

→ All parts of a plant that are above the ground form the shoot system.

Types of shoot system:

(a) Stem

→ It holds leaves in position and helps them to spread out as the stem and its branches grow.

→ It bears flowers, buds, leaves, and fruits.

(b) Leaf

→ A leaf is a flat and green structure on a plant, coming out from a node on the stem and always bearing a bud in its axil.

→ Parts of leaf are:
• Petiole
• Leaf lamina
• Veins

(iii) Flowers

→ A flower is the reproductive organ of a plant.

→ Flower gets developed into fruits and the fruits contain seeds with them for next generation.

Parts of flowers:

(i) Pedicle: Stalk of the flower through which the flower is joined to the branch.

(ii) Sepal: Small green leaf-like structure on the thalamus.

(iii) Petals: Petals attract the insects and help in the process of reproduction.

(iv) Stamens: These are male organs of the flower. It consists of two parts:
(a) Anther

(v) Carpel: It is female organ of the flower. It consists of three parts:
(a) Style
(b) Stigma
(c) Ovary


Get Offline Ncert Books, Ebooks and Videos Ask your doubts from our experts Get Ebooks for every chapter Play quiz while you study

Download our app for FREE

Study Rankers Android App Learn more

Study Rankers App Promo