Animal Behaviour

On the earth, almost all living organisms exhibit their specific type of behaviour in response to environmental conditon or external stimuli. Hence, behaviour may be defined as the expression of livin…

Smoking ROTS Brain

Smoking “rots” the brain by damaging memory, learning and reasoning, according to researchers at King’s College London. According to the study of 8,800 people, over 50 showed high bl…

Cilia and Flagella

Cilia and flagella are one of the most important parts of the cell. They are fine, hair-like protoplasmic processes of the cells which are similar to each other in structure. They are present in some …

Centrioles

Centrioles are non-membranous organelles which are present in the cytoplasm near the nucleus of the cell. They are present in all animal cells and in flagellated motile cells of lower plants. They hav…