What criteria do we use to decide whether something is alive?
All the living organisms show various types of processes during their life. This shows that they are alive, not a non- living organism or shows the assurance that they are not dead. When the organism is alive, it shows various types of processes like growth, movement, adaptations or the struggle for survival during the extreme stress conditions, respiration, reproduction, hormonal control and coordination processes, digestion, excretion and circulation. These processes ensure that something is alive.
Popular Questions of Class 10 Science
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When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
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Outline a project which aims to find the dominant coat colour in dogs.
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Draw the structure for the following compounds.
(i) Ethanoic acid (ii) Bromopentane*
(iii) Butanone (iv) Hexanal.*Are structural isomers possible for bromopentane?
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A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases?
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(a) What property do all elements in the same column of the Periodic Table as boron have in common?
(b) What property do all elements in the same column of the Periodic Table as fluorine have in common? - Q:-
Calculate the number of electrons constituting one coulomb of charge.
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What is an homologous series? Explain with an example.
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Why is variation beneficial to the species but not necessarily for the individual?
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A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Recently Viewed Questions of Class 10 Science
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The autotrophic mode of nutrition requires
(a) carbon dioxide and water. (c) sunlight.
(b) chlorophyll. (d) all of the above. - Q:-
Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.
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What do you mean by a precipitation reaction? Explain by giving examples.
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Which part of the brain maintains posture and equilibrium of the body?
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(a) What property do all elements in the same column of the Periodic Table as boron have in common?
(b) What property do all elements in the same column of the Periodic Table as fluorine have in common? - Q:-
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
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(b) carbon
(c) silicon
(d) iron. - Q:-
Why are we looking at alternate sources of energy?
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Which of the following constitute a food-chain?
(a) Grass, wheat and mango
(b) Grass, goat and human
(c) Goat, cow and elephant
(d) Grass, fish and goat - Q:-
Write a balanced chemical equation with state symbols for the following reactions:
- Solutions of barium chloride and sodium sulphate in water react to give insoluble barium suphate and the solution of sodium chloride.
- Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solutions and water.
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