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Anatomy of Flowering Plants · Question 68

AIPMT 2008MCQEasy📈 Topic in 0% papers+4−1
1

The length of different internodes in a culm of sugarcane is variable because of:

  1. shoot apical meristem
  2. position of axillary buds
  3. size of leaf lamina at the node below each internode
  4. intercalary meristem

Answer

(4) intercalary meristem

Solution

⇒ As per NCERT, the meristem which occurs between mature tissues is known as intercalary meristem; it occurs in grasses and regenerates parts removed by the grazing herbivores.

⇒ In grasses such as sugarcane, intercalary meristem is present at the base of each internode; its activity differs from internode to internode, so the internodes of the culm elongate to different lengths.

Answer: (4)

AIPMT 2008

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2

Passage cells are thin-walled cells found in:-

  1. Endodermis of roots facilitating rapid transport of water from cortex to pericycle
  2. Testa of seeds to enable emergence of growing embryonic axis during seed germination.
  3. Phloem elements that serve as entry points for substances for transport to other plant parts
  4. Central region of style through which the pollen tube grows towards the ovary.
AIPMT 2007
3

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
AIPMT 2007
4

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
5

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
6

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
7

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
8

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
9

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
10

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

  1. Apical meristem
  2. Parenchyma
  3. Lateral meristem
  4. Intercalary meristem
AIPMT 2002
11

Four radial vascular bundles are found in : -

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

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