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Two green plants are kept separately in oxygen , one in the dark and the other in continuous light. Which one will live longer? Give reasons.
Plant kept in continuous light will live longer, because it will be able to produce oxygen required for its respiration by the process of photosynthesis.
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How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
Almost all living organisms are dependent on soil. Some depend directly, while some depend indirectly. Plants need soil for getting support as well as nutrients to prepare their food. On...
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What is the major source of fresh water in the city/town/village where you live?
River is a major source of fresh water.
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Why can’t sea animals live in distilled water?
Due to the absence of free oxygen in the distilled water
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If you live in a overcrowded and poorly ventilated house, it is possible that you may suffer from which of the following diseases
(c) Air borne diseases
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Which do you think is a more basic characteristic for classifying organisms? (a) the place where they live.
The kind of cells an organism is made of is more basic characteristic of classifying organism because it gives a scientific angle to classification. Moreover, a particular dwelling place can...
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Classify each of the following as either a p-type or n-type semi-conductor
Hint : (a) Ge is group 14 element and In is group 13 element. Therefore, an electron deficit hole is created. Thus semiconductor is p-type. (b) Since B is group 13 element...
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Classify each of the following as being either a p-type or an n-type semiconductor: (i) Ge doped with In
(i) Ge (a group 14 element) is doped with In (a group 13 element). Therefore, a hole will be created and the semiconductor generated will be a p-type semiconductor. (ii) B (a...
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How can the two emulsions can be distinguished : (a) oil in water type (o/w) and (b) water in oil type (w/o)
[Hint : (a) By dilution test (b) By dye test]
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Differentiate between box-type solar cooker and spherical reflector type solar cooker.
Box-type solar cooker Spherical reflector type solar cooker 1. Plane mirror is used as a reflector. 2. It does not concentrate solar energy at a point. 3. Cornparativeiv low temperature is produced in it. 4. It is used to...
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