A pollen grain is a microscopic body that contains the male reproductive cell of a plant. It is crucial in a plant's fertilization process. Some... View Article
When light traveling in an optically dense medium hits a boundary at a steep angle (larger than the critical angle for the boundary), the light... View Article
Laws of conservation of mass - It states that mass can neither created nor destroyed. The total mass before and after a chemical reaction remains... View Article
The elimination method of solving systems of equations is also called the addition method. To solve a system of equations by elimination we... View Article
Red blood cells have adapted this characteristic (no nucleus) for several reasons. It simply allows the red blood cell to have more hemoglobin.... View Article
Isomerism is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. Chemical compounds... View Article
Pure substances are further broken down into elements and compounds. Ice, iron, calcium oxide and mercury are pure substances since they contain... View Article
Vegetative propagation is practiced for growing some types of plants because of following advantages: It helps to introduce plants in new areas... View Article
A coordinate system attached to the Earth is not an inertial reference frame because the Earth rotates and is accelerated with respect to the... View Article
Scalar quantities are defined by magnitude with no applicable direction. In contrast, vector quantities must have both magnitude and direction of... View Article
Alimentary Canal is a part of the Digestive system. It is a tube starting from the mouth , running up to the anus. While the Digestive system is... View Article
We know that, Two entities can only be added if their dimensions are same, so Dimensions of [at] = Dimensions of [b/t] = Dimensions of [c] =... View Article
Cardiac and skeletal muscle are both striated in appearance, while the smooth muscle is not. Both cardiac and smooth muscle is involuntary while... View Article
Numbers are divisible by 8 if the number formed by the last three individual digits is evenly divisible by 8. For example, the last three digits... View Article
When they are placed in water, the water from the surrounding diffuses into the raisins and so the raisins swell up. The process is called... View Article
The thinner is the wall of the alveoli the more is the amount of exchange of the gas. In addition to this the more, the concentration difference... View Article