COMMUNICATION IA- NERVES Introduction The nervous system is a rapid communication system that interacts continuously with the endocrine system to control coordination of body functions. In the vertebrates it plays…
There are following application of ecology in different environmental managements: Land management The operation by which land is prepared for crops plantation, harvesting is called land management. Good land management…
Occurrence Polysiphonia is a marine alga. It is present along the coast of oceans. It is attached to the rocks or other substratum. Some members are epiphytes. General structure Vegetative…
Spreading of deserts to the green areas is called desertification. Desertification occurs due to human activities. Desertification occurs in grasslands and forests. Earlier, vegetation was present there. But over exploitation…
Batrachospermum life cycle Occurrence Batrachospermum is fresh water alga. It is found in clear, cool and running streams. Deep water plants are dark violet or reddish in colour. But the…
The wearing away of the soil by wind, water, snow or gravity is called soil erosion. Climatic, topographic. biotic, edaphic, and geologic factors cause the soil erosion. Climatic factors: Wind…
Occurrence Ectocarpus is a brown alga. It is abundantly found throughout the world in cold waters. A few species occur in fresh waters. The plant grows attached to rocks and…
Pollution has been defined by Odum (1971) as "the undesirable change in the physical, chemical or biological characteristics of air, land and water that may affect the human life. The…
CLASSIFICATION Phylum platyhelminthes has four classes: (a) Class Turbellaria They have over 3, 000 species. They are free-living and aquatic External surface is ciliated. They are predators. They possess rhabdites,…
Give medicinal and condiment uses of family Ranunculaceae: ANS:Medicinal plants: Some members are used as medicinal plants. Aconitwn yields an alkaloid aconitina. Thu ields mamira. It is used in the…
rubab
sana
abida
saadia
sidra