please can you give summary of functional unit of life9th class
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rimitive microscope.
• Leeuwenhoek (1674), discovered the free living cells in pond water with the improved microscope.
• Robert Brown discovered the nucleus in the cell in 1831.
• Purkinje coined the term ‘protoplasm’ for the fluid substance of the cell in 1839.
The cell theory
• The theory that all the plants and animals are composed of cells and the cell is the basic unit of life, was presented by two biologists, Schleiden and Schwann.
• The cell theory was further expanded by Virchow by suggesting that all cells arise from pre-existing cells.
→ Types of organisms
• On the basis of no. of cells, organisms are of two types:
(i) Unicellular Organism
(ii) Multicellular Organism
(i) Unicellular Organism: These organisms are single celled which perform all the functions. Example: Amoeba, paramecium, bacteria.
(ii) Multicellular Organism: Many cells grouped together to perform different function in the body and also form various body parts. Example: fungi, plants, animals.
• The shape and size of cell are different according to the kind of function they perform. There is division of labour in cells.
• Each cell has certain kind of cell organelles to perform different type of function like mitochondria for respiration.
→ Types of cells
• There are two types of cells:
(i) Prokaryotes
(ii) Eukaryotes
Difference between Animal cell and Plant cell
Animal Cell...is important.
.
.
if you don't mind just download one app name 'class 10th' here u can find all chapter notes
...hope it may help you...
• Leeuwenhoek (1674), discovered the free living cells in pond water with the improved microscope.
• Robert Brown discovered the nucleus in the cell in 1831.
• Purkinje coined the term ‘protoplasm’ for the fluid substance of the cell in 1839.
The cell theory
• The theory that all the plants and animals are composed of cells and the cell is the basic unit of life, was presented by two biologists, Schleiden and Schwann.
• The cell theory was further expanded by Virchow by suggesting that all cells arise from pre-existing cells.
→ Types of organisms
• On the basis of no. of cells, organisms are of two types:
(i) Unicellular Organism
(ii) Multicellular Organism
(i) Unicellular Organism: These organisms are single celled which perform all the functions. Example: Amoeba, paramecium, bacteria.
(ii) Multicellular Organism: Many cells grouped together to perform different function in the body and also form various body parts. Example: fungi, plants, animals.
• The shape and size of cell are different according to the kind of function they perform. There is division of labour in cells.
• Each cell has certain kind of cell organelles to perform different type of function like mitochondria for respiration.
→ Types of cells
• There are two types of cells:
(i) Prokaryotes
(ii) Eukaryotes
Difference between Animal cell and Plant cell
Animal Cell...is important.
.
.
if you don't mind just download one app name 'class 10th' here u can find all chapter notes
...hope it may help you...
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