level of organisation in plant and animal

In order to survive, all living organisms require food. Animals cannot synthesize their own food. They have to depend on ready made food. They obtain food either directly from plants (by eating them) or indirectly (by eating other herbivores). The nutrition can be defined as th..

1) They produce food for all organisms 2) They provide beneficial substances like drugs, tannins, fibres, rubber, vegetable oils, fuel, condiments. 3) Some plants contain alkaloids which check growth of cancer cells. Example: Rosy periwinkle. 4) Plants release O 2 , cool enviro..

Animals are different from plants because of their ability of locomotion. This ability probably developed as they have to search for food, unlike the plants that are autotrophic. Since they move from one place to another, the animals have to continuousl..

Man is an omnivore. He depends on both plants and animals for food. In the previous chapter we studied about crops being the major source of our food. In this chapter, let us study about animal sources of food. Animal sources include eggs, meat, milk an..

Conclusion - Respiration is an important process in nature. It is a process by which the solar energy trapped by the plants in the food can be utilised. The organic compounds are broken down to release energy. This energy is in the form of ATP molecules and is made available for all the v..

Introduction - Man is an omnivore. He depends on both plants and animals for food. In the previous chapter we studied about crops being the major source of our food. In this chapter, let us study about animal sources of food. Animal sources include eggs, meat..

. Deficiency of growth hormone causes dwarfism and over secretion causes gigantism in the young and acromegaly in adults. Pancreatic Islets of langerhans secrete insulin on being stimulated by a rise in blood sugar or blood amino-acid level. Insulin lowers the blood sugar by increasing th..

Animals are different from plants because of their ability of locomotion. This ability probably developed as they have to search for food, unlike the plants that are autotrophic. Since they move from one place to another, the animals have to continuously enco..

The floating gas holder type of biogas plant has the following chambers/ sections: Mixing Tank - present above the ground level. Digester tank - Deep underground well-like structure. It is divided into two chambers by a partition wall in between. It has two long cement pi..

Saprotrophs are decomposers and liberate energy for their own use by breaking down complex organic matter from the dead bodies of other organisms. At the same time this process releases vital chemical elements into the soil which are absorbed by autotrophs. Thus saprotrophs aid the recycling of..