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Anatomy of Flowering Plants · Question 76

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

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)

AIPMT 2002

Keep practising — Anatomy of Flowering Plants

2

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

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

Four radial vascular bundles are found in : -

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

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
5

Main function of lenticel is

  1. transpiration
  2. guttation
  3. gaseous exchange
  4. bleeding.
Out of syllabusAIPMT 2002
6

In which of the following plants sunken stomata are found?

  1. Nerium
  2. Hydrilla
  3. Mango
  4. Guava
AIPMT 2001
7

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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