Q. Lub' sound is produced when tricuspid and bicuspid valves are

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Q. Transpiration is very essential for plants as it

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Q. Proteins which are synthesized by blood to protect body from nucleic acids and toxins of invading organism

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Q. Double circuit heart is present in

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Q. Water is evaporated from plant through

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Q. More than 90% families of flowering plants have

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Q. Red blood cells are also called

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Q. In Ascent of Sap, water and dissolved minerals are taken up by leaves through

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Q. Movement of stomata are maintained by

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Q. Incipient plasmolysis is stage when plasmolysis

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Q. In Lily and Maize, stomata are present in

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Q. Hard yellow plaque of lipoid which is found in inner most layer of arteries is called

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Q. A complex of interactions of reactions involving elements and molecules constitutes a

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Q. Serum which contains antibodies is called

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Q. Exchange of gases in leaves is accelerated by wet surfaces of

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Q. Oxygenated blood is never received by heart of

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Q. Blood is sometimes retained in heart or lungs due to malfunctioning activity of heart pumping which can lead to fatal condition is called

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Q. Temperature and concentration of salts and water is retained in

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Q. Afferent lymph vessels are numerous in number, and efferent lymph vessel is

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Q. Carriers in cell membrane which transport nutrients in plants are

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