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Anatomy of Flowering Plants

AIPMT 2002MCQMedium📈 Topic in 25% papers+4−1
Ques. 1AIPMT 2002

Which of the following statements is true ?

  1. Tracheids are unicellular and with wide lumen
  2. Tracheids are multicellular and with narrow lumen
  3. Vessels are multicellular and with wide lumen
  4. Vessels are unicellular and with narrow lumen

Answer

(3) Vessels are multicellular and with wide lumen

Solution

As per NCERT, tracheids are elongated or tube-like cells with thick and lignified walls and tapering ends; each tracheid is a single dead cell with a narrow lumen.

As per NCERT, vessel is a long cylindrical tube-like structure made up of many cells called vessel members, each with lignified walls and a large central cavity.

⇒ Tracheids: unicellular, narrow lumen. Vessels: multicellular, wide lumen.

∴ The true statement is: Vessels are multicellular and with wide lumen.

Answer: (3)

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Ques. 2AIPMT 2002

Axillary bud and terminal bud derived from the activity of : -

  1. Apical meristem
  2. Parenchyma
  3. Lateral meristem
  4. Intercalary meristem
Ques. 3AIPMT 2002

Four radial vascular bundles are found in : -

  1. Monocot stem
  2. Dicot stem
  3. Dicot root
  4. Monocot root
Ques. 4AIPMT 2002

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
Ques. 5AIPMT 2002

Main function of lenticel is

  1. transpiration
  2. guttation
  3. gaseous exchange
  4. bleeding.
Out of syllabus
Ques. 6AIPMT 2001

In which of the following plants sunken stomata are found?

  1. Nerium
  2. Hydrilla
  3. Mango
  4. Guava
Ques. 7AIPMT 2000

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

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