Answer: Parenchymatous cells performing photosynthesis are called Chlorenchyma as they contain chloroplast in them. Parenchyma is the most... View Article
Solution: Acetone, petrol, perfume etc., being volatile, evaporate very fast when exposed to larger surfaces. When we put some acetone or petrol... View Article
Answer: Mendeleev's classification was based on increasing atomic masses. Elements were arranged in Mendeleev's periodic table according to... View Article
Answer: Concentration of base increases with the increase in OH- ions. An alkali or base is a compound which when dissolved in water yields... View Article
Answer: Fruit wall and seed coat are fused in a grain. Fruits are seed-bearing structures that only flowering plants produce from their... View Article
Answer: The speed of sound (344 m/s) is very less than the speed of light(3 x 108 m/s). The Sound of thunder takes more time to reach the... View Article
Answer: Electromagnetic radiations do not require a medium to travel. Electromagnetic waves, also known as EM waves, are formed when an... View Article
Solution: Fertilization can be defined as the fusion of the male gametes (pollen) with the female gametes (ovum) to form a diploid zygote. It is... View Article
Digestion is one of the longest process taking place in the human body. The process of digestion involves several steps as well as the organs. It... View Article
Answer: Narrowing of blood vessels takes place at low temperature. At low temperature, the blood vessels get narrowed or vasoconstricted. This... View Article
Answer: During digestion, fats are broken down to fatty acids and glycerol. Lipids are organic compounds comprising fatty acids, which are... View Article
Answer: Nitrogen is the most essential element in proteins. Proteins are massive molecules made up of essential building blocks called amino... View Article
Answer: N shell can have a maximum of 32 electrons. Fourth or N shell has 2 x (4) 2 = 32 electrons The principal quantum number determines the... View Article
Answer: An element having configuration 1s2 2s2 2p6 3s2 3p6 4s1 will form basic oxide. As per the configuration, the last electron belongs to... View Article
Answer: The chemical formula of calcium nitrate is Ca(NO3)2. Calcium nitrate is an inorganic compound with the chemical formula Ca(NO3)2. It... View Article
Answer: When water solidifies to ice, then heat is evolved. Freezing is the transformation of a liquid into a solid as a result of a drop in... View Article
Answer: A rat feeding on a potato is an example of a primary consumer. The three levels of consumers found in an ecological food chain are... View Article