The living world shows a lot of diversity in both animals and plants. This chapter explains habitat, biodiversity, the difference between unicellular and multicellular organisms, and the adaptations that help fish, frogs, lizards, birds, camels and other animals live in their own habitats.
1. Habitat
- Fishes and crabs live only in water, while many animals like elephants, tigers and camels live on land.
- The geographical features and environmental conditions on earth differ from one place to another.
- Though the camel can live anywhere, it lives in deserts more comfortably. Polar bear and penguins dwell in cold regions.
- Living in such harsh conditions requires special features, which help these organisms to live, breed and excel well in that particular place.
Habitat: the living or dwelling place of an organism.
2. Biodiversity
Every plant and animal is unique. This diversity is called biodiversity. Biodiversity may be defined as the variety and variability among living organisms and the habitats in which they live.