Mechanism of Breathing and Cellular Respiration
The mechanical process of breathing involves inspiration and expiration.
Biology
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Respiration in Aquatic and Terrestrial Animals
Respiration is different in aquatic and terrestrial animals. Aquatic animals repire by means of gills and skin while terrestrial animals breathe in through lungs.
What is respiration and how is it different from breathing?
The digested food is absorbed into the body from where it is distributed to all its cells.
How does Nutrition take place in Human Beings?
In a human being the ingestion of food is brought about in mouth where it is crushed into fine pieces by teeth.
How do Organisms get Their Food?
Mode of nutrition through which an organism depends on other organisms for food due to its inability to synthesise food is called as heterotrophic nutrition.
Basic Concepts of Nutrition
According to the World Health Organisation (WHO) – Nutrition is the intake of food, considered in relation to the body’s dietary needs.
What is acid deposition? What is acid rain?
The acid rain affects living and non- living components of environment. In July 1982, Stockholm- the venue of U N –conference on acid rain, suffered heavy acid showers for about a week. In India too, acid rains have been reported since last twenty years in areas where thermal power plants are located and also around Delhi, the capital of India.
Forests and their types
A forest is a highly complex and constantly changing environment. It is made up of a variety of living things like wildlife, trees, shrubs, wildflowers, ferns, mosses, lichens, fungi and microscopic soil organisms; and non-living things such as water, nutrients, rocks, sunlight and air. Trees are the biggest part of this complex community.
Natural Habitats of animals and their importance
Natural habitats support a variety of living organisms, some of which endemic to one particular habitat.
Different Plant- Movements
The positive movements of a plant shoot in response to light or movement of shoot towards the source of light is called as Phototropism. If the part of a plant moves away from light, this movement is called as Negative Phototropism.
