CBSE Class Notes Online – Classnotes123
CBSE Class Notes and Question Answers Online – Classnotes123
CBSE Board , Science Complete Notes
Sexual Reproduction It is a type of reproduction in which both sexes, i.e. male and female are involved. Sex cell of one parent (male) fuses with the sex cell of …
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What is Reproduction It is the process of producing new organisms from the existing organisms of the same species. It is vital for the existence and continuity of the species. …
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Explanation of Double Circulation Diagram Deoxygenated Blood enters the Heart Deoxygenated blood reaches from the body to the upper chamber on the right, namely right atrium of the heart and …
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The Circulatory System The circulatory system is the system of transportation in animals . It consists of your heart, blood, veins, and arteries. It carries blood to every part of …
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Double Circulation In human beings, the blood goes through the heart twice during each cycle i.e. the blood passes through the human heart two times to supply once to the …
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Transpiration The loss of water in the form of vapors from the aerial parts of the plant is called Transpiration. It takes place mainly through Stomata. The water which is …
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opening and closing of stomatal pore depends on Stomata The exchange of gasses needed for photosynthesis takes place through tiny openings called stomata. These are found mostly on the underside …
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Animals have evolved different organs for the uptake of oxygen from the environment and for getting rid of the carbon dioxide produced in the body during respiration. Exchange of gasses …
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Respiration is the chemical process that supplies the body with energy for all other life processes. Respiration provides energy to all the processes in living organisms like growth and repair …
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What is Anaerobic Respiration It is the process, in which a small amount of energy is released in the absence of oxygen (air) from the breakdown of food substances. Less …
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