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Anatomy of Flowering Plants · Question 70

AIPMT 2007MCQEasy📈 Topic in 38% papers+4−1
1

For a critical study of secondary growth in plants, which one of the following pairs is suitable?

  1. Deodar and fern
  2. Wheat and maiden hair fern
  3. Sugarcane and sunflower
  4. Teak and pine

Answer

(4) Teak and pine

Solution

As per NCERT, secondary growth (increase in girth) occurs by the activity of vascular cambium and cork cambium in dicotyledons and gymnosperms.

∵ Ferns (pteridophytes) and monocots such as wheat and sugarcane lack a vascular cambium, they show no secondary growth.

⇒ Deodar and pine are gymnosperms and teak is a woody dicot; all of them show prominent secondary growth (wood).

∴ Teak and pine form a suitable pair for a critical study of secondary growth.

Answer: (4)

AIPMT 2007

Keep practising — Anatomy of Flowering Plants

2

A common structural feature of vessel elements and sieve tube elements is-

  1. Enucleate condition
  2. Presence of p-protein
  3. Thick secondary walls
  4. Pores on lateral wall
AIPMT 2006
3

In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues ?

  1. Shoot tips and root tips
  2. Flowers, fruit and leaves
  3. Stem and root
  4. All parts
AIPMT 2005
4

The apical meristem of the root is present

  1. In all the roots
  2. Only in tap roots
  3. Only in adventitious roots
  4. Only in radicles
AIPMT 2003
5

Diffuse porous wood is characteristic of those plants which are growing in :

  1. Tropics
  2. Temperate climate
  3. Alpine region
  4. Cold winter regions
AIPMT 2003
6

The cells of the quiescent centre are characterised by :

  1. Having light cytoplasm and small nuclei
  2. Dividing regularly to add to tunica
  3. Having dense cytoplasm and prominent nuclei
  4. Dividing regularly to add to the corpus
AIPMT 2003
7

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
AIPMT 2002
8

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

  1. Apical meristem
  2. Parenchyma
  3. Lateral meristem
  4. Intercalary meristem
AIPMT 2002
9

Four radial vascular bundles are found in : -

  1. Monocot stem
  2. Dicot stem
  3. Dicot root
  4. Monocot root
AIPMT 2002
10

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
11

Main function of lenticel is

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

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