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Anatomy of Flowering Plants · Question 54

AIPMT 2011 (Mains)MCQEasy📈 Topic in 38% papers+4−1
1

Some vascular bundles are described as open because these :

  1. are capable of producing secondary xylem and phloem
  2. are not surrounded by pericycle
  3. possess conjunctive tissue between xylem and phloem
  4. are surrounded by pericycle but no endodermis

Answer

(1) are capable of producing secondary xylem and phloem

Solution

As per NCERT, in dicotyledonous stems cambium is present between phloem and xylem.

∵ Such vascular bundles possess cambium, they can form secondary xylem and phloem tissues; hence they are called open vascular bundles.

In monocotyledons the vascular bundles have no cambium, so they are closed.

Answer: (1)

AIPMT 2011 (Mains)

Keep practising — Anatomy of Flowering Plants

2

The cork cambium, cork and secondary cortex are collectively called :

  1. Periderm
  2. Phellem
  3. Phellogen
  4. Phelloderm
AIPMT 2011 (Prelims)
3

Ground tissue includes :

  1. All tissues external to endodermis
  2. Epidermis and cortex
  3. All tissues internal to endodermis
  4. All tissues except epidermis and vascular bundles
AIPMT 2011 (Prelims)
4

In land plants, the guard cells differ from other epidermal cells in having

  1. cytoskeleton
  2. mitochondria
  3. endoplasmic reticulum
  4. chloroplasts
Out of syllabusAIPMT 2011 (Prelims)
5

Transport of food material in higher plants takes place through -

  1. Sieve elements
  2. Transfusion tissue
  3. Companion cells
  4. Tracheids
AIPMT 2010 (Mains)
6

Given below is the diagram of a stomatal apparatus. In which of the following all the four parts labelled as A, B, C and D are correctly identified? [Figure]

  1. A Epidermal cell, B Subsidiary cell, C Stomatal aperture, D Guard cell
  2. A Subsidiary cell, B Epidermal cell, C Guard cell, D Stomatal aperture
  3. A Guard cell, B Stomatal aperture, C Subsidiary cell, D Epidermal cell
  4. A Epidermal cell, B Guard cell, C Stomatal aperture, D Subsidiary cell
Out of syllabusAIPMT 2010 (Mains)
7

Heartwood differs from sapwood in –

  1. Having dead and non-conducting elements
  2. Being susceptible to pests and pathogens
  3. Presence of rays and fibres
  4. Absence of vessels and parenchyma
AIPMT 2010 (Prelims)
8

Which one of the following is not a lateral meristem ?

  1. Interfascicular cambium
  2. Intercalary meristem
  3. Intrafascicular cambium
  4. Phellogen
AIPMT 2010 (Prelims)
9

The chief water conducting elements of xylem in gymnosperms are :

  1. Fibres
  2. Transfusion tissue
  3. Vessels
  4. Tracheids
AIPMT 2010 (Prelims)
10

In barley stem vascular bundles are -

  1. Closed and scattered
  2. Closed and radial
  3. Open and in a ring
  4. Open and scattered
AIPMT 2009
11

Palisade parenchyma is absent in leaves of -

  1. Mustard
  2. Sorghum
  3. Soybean
  4. Gram
AIPMT 2009

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