Q. Which one of the following statements about Viroids is true?

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A

The Viroids are made up of ss RNA enclosed in a protein coat

B

The Viroids are made up of ds RNA enclosed in a protein coat

C

The Viroids are made up of ss RNA without a protein coat

D

The Viroids are made up of ds RNA without a protein coat

Solution:

Viroids are single stranded, circular, naked RNA molecules that cause diseases in plants. Example: Potato spindle tuber disease caused by potato spindle tuber viroid.

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1. Kranz anatomy is found in

2. How many energy rich bonds are found in ATP ?

3. Differentiation of root is controlled by

4. Which of the following statement is correct ?

5. Match the following:

Column I Column II

A Ascospore p Diatom

B Endospore q Agaricus

C Auxospore r Bacteria

D Basidiospore s Yeast

t Nephrolepis

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Column I Column II

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d Bioluminescence iv Locusta

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