LIFE PROCESSES

MADE BY :- NIMIT ARORA

CLASS :- 10Th ‘B’

ROLL NO. :- 31

CRITERIA TO DECIDE WHETHER SOMETHING IS ALIVE :-

THE MOST IMPORTANT CRITERIA TO DECIDE WHETHER SOMETHING IS ALIVE IS MOVEMENT.ALL LIVING THINGS MOVE WITHOUT ANY EXTERNAL HELP.

LIFE PROCESSES :-LIFE PROCSSES ARE THE BASIC PROCESSES IN THE LIVING ORGANISM. WHICH ARE NECESSARY FOR MAINTAING THEIR LIFE .

1) NUTRITION:- Nutrition is the

process of taking food by an organism and its utilization by the body for life processes.

2) RESPIRATION :-

Respiration is the process by which food is burnt in the cells of the body with the help of oxygen to release energy.

3 ) TRANSPORTATION :-

Transportation is the process by which food , oxygen , water , waste products are carried from one part of the body to other parts.

4 ) EXCRETION :-

Excretion is the process by which waste products are removed from the body.

NUTRITIONNutrition is the process of taking food by organism and its utilization by the body to build the body , for growth, for energy .

MODES OF NUTRITION :- There are two main modes of nutrition.

a)Heterotrophic Nutrition

b)Autotrophic Nutrition

AUTOTROPHIC NUTRITION

Autotrophic nutrition is the nutrition in which organism prepare their own food from simple inorganic substance like carbon dioxide and water in the presence of sunlight and chlorophyll.

HETEROTROPHIC NUTRITION Heterotrophic nutrition in which organism get their food directly or indirectly from plants. There are three types of heterotrophic nutrition :-

1.Saprophytic

2.Parasitic

3.Holozoic

SAPROPHYTIC NUTRITIONSaprophytic is the nutrition in which organism get their food from dead or decaying matter. They break down the food material outside their body and then absorbs it. Examples :- Mushrooms , yeast ect .

PARASITIC NUTRITION

Parasitic nutrition is nutrition in which organism get their food from living organism (host) without killing them .

HOLOZOIC NUTRITIONHolozoic nutrition is nutrition in which organisms take food directly and then digest it and absorb it. Example :- Amoeba, paramecium .

NUTRITION IN PLANTSPHOTOSYNTHESIS:- is the process by which plants produce their own food in the presence of sunlight , water and carbon-dioxide .

STOMATA

Stomata are tiny pores present in the leave through which exchange of gases takes place. Each stoma has pair of guard cells which controls the opening and closing of stomatal pore .

NUTRITION IN ANIMALS

Nutrition in Amoeba :-

Amoeba is unicellular animal living in water. It takes in food by finger like projections called pseudopodia and forms a food vacuole. Inside the food vacuole the food Is digested and absorbed. The undigested food is then sent out through the surface of the cells.

NUTRITION IN AMOEBA

NUTRITION IN HUMAN Nutrition in human beings takes place in the digestive system. It consists of the alimentary canal and glands which produce enzymes which breaks down food into smaller molecules. The main organs of digestive system are mouth, oesophagus, stomach,small intestine, large intestine, and anus.

NUTRITION IN HUMAN BEINGS

RESPIRATION Respiration is the process by which food is burnt into smaller cells of the body with the help of oxygen to release energy. It takes place in mitochondria of cells. The energy released are used to make ATP molecules from ADP molecules and inorganic phosphate. Energy is stored in the cells in the form of ATP molecules . When the cells need energy , ATP is broken down in the presence of water to form ADP and energy is released.

BREAK DOWN OF GLUCOSE BY VARIOUS PATHWAYS :-

RESPIRATION IN HUMAN BEINGS

The main organs of the respiratory system are nostrils, nasal cavity , pharynx, larynx , trachea, bronchi, bronchiole, lungs and diaphragm

TRANSPORTATION

Transportation in human beings :-

The main transport system in human beings is circulatory system . It consists of blood , arteries , veins capillaries and heart .

WORKING OF HEART

TRANSPORTATION IN PLANTS TRANSPORTATION IN PLANTS

In plants transportation of materials like food , waste and mineral takes place through conducting tissues called Xylem and phloem.

EXCRETION IN HUMAN EXCRETION IN HUMAN

The excretory system consist of a pair of kidneys , a pair of uterers , urinary bladder and urethra. Each kidneys has a number of excretory units called nephrons.

THE END THE END Made by :- Nimit Arora

Class :- X ‘B’

Roll No :- 31