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Anatomy of Flowering Plants · Question 78

AIPMT 2002MCQEasy📈 Topic in 12% papers+4−1
1

Four radial vascular bundles are found in : -

  1. Monocot stem
  2. Dicot stem
  3. Dicot root
  4. Monocot root

Answer

(3) Dicot root

Solution

In roots, xylem and phloem lie on different radii alternately, i.e. the vascular bundles are radial; stems have conjoint bundles.

As per NCERT, the dicot root has two to four xylem and phloem patches, while the monocot root usually has more than six xylem bundles (polyarch).

⇒ Four radial bundles (tetrarch condition) are therefore found in the dicot root.

Answer: (3)

AIPMT 2002

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2

Vessels are found in:

  1. Most of the angiosperms and a few gymnosperms
  2. All angiosperms and some gymnosperms
  3. All pteridophyta
  4. All angiosperms, all gymnosperms and some pteridophyta
AIPMT 2002
3

Main function of lenticel is

  1. transpiration
  2. guttation
  3. gaseous exchange
  4. bleeding.
Out of syllabusAIPMT 2002
4

In which of the following plants sunken stomata are found?

  1. Nerium
  2. Hydrilla
  3. Mango
  4. Guava
AIPMT 2001
5

What happens in plants during vascularisation?

  1. Formation of procambium, primary phloem and xylem simultaneously
  2. Differentiation of procambium followed by the formation of secondary xylem
  3. Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
  4. Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously
AIPMT 2000

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