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Q.

Which of the following statements is / are true?                                                                            

I) If the stem is joined with solid nodes and hollow internodes, it is called caudex

II) In Tridax, the stem is decumbent

III) Corm is a condensed form of rhizome growing more or less in vertical directions

 IV) Sucker is an underground modification of stem

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a

II and III only

b

II, III and IV only

c

III and IV only

d

I, IV only

answer is B.

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Detailed Solution

In Tridax, the stem is decumbent. Corm is a condensed form of rhizome growing more or less in vertical directions. Sucker is a sub aerial stem modification . if the stem is  joined with solid nodes and hollow internodes is called culm.

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