TREE PROPAGATION AND PLANTING
PLANTING TECHNIQUES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the preparation of culture media the use of AGAR is preferable than GELRITE because it is I. not digested by plant enzyme. II. requires only in small amount III. reacted with media constituents. IV. cheap and requires low temperature to melt.
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I and II
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I and IV
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II and III
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II and IV
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Explanation:
Detailed explanation-1: -Agar is an ideal solidifying agent for microbiological media because of its melting properties and because it has no nutritive value for the vast majority of bacteria. Solid agar melts at about100°C; liquid agar solidifies at about 42°C.
Detailed explanation-2: -Agar-Agar quickly supplanted gelatin as the basis of microbiological media, due to its higher melting temperature, allowing microbes to grow at higher temperatures without the medium becoming liquefied.
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