(i) Tissue: A group of similar cells which perform a specific function. Ex: Nervous tissue.
(ii) Organ: The different types of tissues that group together to function in a coordinated manner. Ex: Liver.
Define the following terms.
(i) Mineral (ii) Ore (iii) Gangue
Define the following terms:
(i) Hypotropism
(ii) Geotropism
(iii) Chemotropism