Food, water, warmth and oxygen are necessary for the life of most plants and all animals.
Biology, a series for beginners, examines what living organisms need to survive.
Living organisms need food and water if they are to stay alive.
Dry bean seeds are like baby plants. While it may appear that they are dead, they are in fact dormant or resting and are growing at a slow pace. Many types of seeds can stay alive in this dormant state for a long time before they die. A dry seed contains around 10 per cent water which is enough to keep it viable while it is resting. An adult plant contains around 80 to 90 per cent water. In order to grow, these seeds need food, water, warmth and oxygen all of which are necessary to maintain life in most plants and all animals.
Food is needed for all the process of growth.
Water too is necessary for growth and is absorbed much more readily in a warm environment thereby encouraging physical growth. Oxygen is also needed for this growth to continue.
Patricia Boyle explains the breakdown in the type of foods present in seeds including fats, carbohydrates and proteins and their component parts.
This episode of 'Telefís Scoile' was broadcast on 3 February 1967. The presenter is Patricia Boyle.
Telefís Scoile began broadcasting on 4 February 1964.
The programmes covered maths, science and literature in English and Irish to both junior and senior secondary school level.
