Video Notes

If a dilute solution is separated from a concentrated solution by a partially permeable membrane, water diffuses across the membrane from the…

The term ‘ecosystem’ was proposed by a British ecologist A.G. Tansley (1953). It represents the basic fundamental, functional unit of ecology which…

The cells of epithelial and other tissues are held together by various types of cell junctions, that can be categorized into 3-…

Angiosperms are most dominant and most evolved plants on this earth, appeared about 130 million years ago in Jurassic (dicot plant) and…

A few ions or molecules are transported across the membrane against their concentration gradient, i.e., from lower to higher concentration. Such type…