NEET UG Unit 2A: Ecosystem Services, Succession and Biodiversity — practice questions — page 3

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Unit 2A: Ecosystem Services, Succession and Biodiversity questions and exercises with answers

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In the dicot root the number of xylem and phloem patches isRead the answer and worked solution →

Worked practice questions

In the dicot root the number of xylem and phloem patches is

Always more than twenty bundles
Usually two to four (oligoarch)
Usually more than six (polyarch)
Always a single bundle pair

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Correct answer: B. Usually two to four (oligoarch)

Dicot roots are typically diarch to tetrarch (2-4 xylem patches). Monocot roots are polyarch (more than six). Pith is small in dicot roots, large in monocot roots.

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