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Why photosynthesis is a chemical reaction?
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Which of the following statements made by Dalton has not undergone any change?
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In all atoms of an element
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______ is the smallest particle of an element.
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An element is composed of ______ atoms.
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Define the term ions or radicals.
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The boiling point of water is ______
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Give a reason for the following.
Alum is added to water in sedimentation tanks.
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Give a reason for the following.
Ice floats on water.
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Magnesium hydroxides are used for treating _______
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Write any four physical properties of acids.
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Floridian starch is a reserve food material of
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An example for colonial form of algae is
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Binomial nomenclature was first introduced by _______
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Brown algae belongs to ______ class.
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Agar-Agar is obtained from _____ algae.
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In polypetalae, the petals are free.
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Pinus is a closed seeded plant.
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Match the following.
| Cyanophyceae | Green algae |
| Chlorophyceae | Blue-green algae |
| Phaeophyceae | Red algae |
| Rhodophyceae | Brown algae |
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