Biology notes

Nervous system and brain

Nervous system and brain Nervous system it is only found in animals.Neuronal is the unit of the nervous system.Nervous tissue is composed of two main cell...

Teeth and Digestive System

Teeth and Digestive System Teeth They are produced in two sets - temporary and permanent.The teeth are four types : incisors, canines, premolars and molars.A tooth...

Respiratory System

Respiratory System Cellular respiration requires oxygen and produces carbon dioxide. Oxygen must be dissolved in water before animals can take it up. Therefore, the lung...

Plant Growth Hormones

Plant Growth Hormones Generally, there are five types of plant hormones, namely auxins, gibberellins (GAs), cytokinins, abscisic acid (ABA) and ethylene.Auxins, gibberellins, cytokinins are plant...

Plant kingdom

Plant Kingdom All organisms that make their own food are called plants. Plant kingdom is grouped into four major phyta, namely. Thallophyta (bacteria, fungi, lichens and...

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