A plant cell lacks:
Haemoglobin is present in RBC’s to carry oxygen. Mitochondria, plasma membrane is present in both plant and animal cells.
Number of cells found in unicellular organism is :
Those organisms that are made up of only one cell are called unicellular organism. Amoeba, paramecium, bacteria etc are unicellular organisms.
All living organisms are made up of:
Cell is the structural and functional unit of all living organisms. Unicellular made up of only one cell and multicellular are made up of more than one cells.
Cells are capable of performing:
Cells are capable of performing respiration, synthesis and digestion of food to obtain energy. Cells is the functional and structural unit of living organisms.
Robert Hooke observed under microscope :
Robert Hooke observed dead cells of thin slice of cork. He observed small compartments and called it cell.