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Citrus canker' is caused by a...

Citrus canker' is caused by a

A

Virus

B

Bacteria

C

Fungus

D

Algae

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The correct Answer is:
B
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[A] : Citrus canker is a bacterial disease of worldwide distribution . [R] : The causal organism of Citrus canker is the bacterial pathogen Xanthomonas citri .

Read the following statement regarding bacteria. I. Bacteria exchange their genetic matter through conjugation which involve cell to cell contact. II. Transduction in 'Salmonella is reported by Tatum and Lederberg in 1952. III. Citrus canker disease is caused by bacteria Xanthomonas citri. IV. Hans Christian gram's staining method is based on cell wall composition of bacteria. Choose the correct option with true statements

NTA MOCK TESTS-NTA NEET SET 42-BIOLOGY
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  2. Which of the following properties are not seen in Funaria ? I. The...

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  3. Complete the analogy Humans : DAN :: viroids :: ?

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  4. In an experiment , two long day plants belonging to the same species a...

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  5. Which of these properties are seen in both facilitated diffusion as we...

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  6. Which of these is a discrepancy of the five - kingdom classification ?...

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  7. During glycolysis , isomerization occurs in how many steps ?

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  8. Which of these photosynthetic pigments are soluble in water ?

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  9. Read the following properties. Which of these are seen in mango as wel...

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  10. Match the property of the given plant with is example

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  11. Which of these statements about a monocot stem is false ?

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  12. The floral diagram represented below will be seen in which set of plan...

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  13. The substrate in Krebs cycle which undergoes a reaction very similar t...

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  14. Citrus canker' is caused by a

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  15. Which of these properties of cassia is correct ?

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  16. Which statement about photosynthesis is incorrect ?

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  17. Which function is not correctly matched with the appropriate Phytohorm...

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  18. What is the role of pseudomonads in the soil ?

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  19. In which of the following , asexual spores are generally not seen, but...

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  20. Observe the following flowers and state the correct explanation about ...

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