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Set 2 of 3 · Questions 31-60 of 75

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NEET Biology · Anatomy of Flowering Plants · Set 2 (Q31-60)

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  1. 31.
    Interfascicular cambium develops from the cells of
    1. (1)Medullary rays
    2. (2)Xylem parenchyma
    3. (3)Endodermis
    4. (4)Pericycle
  2. 32.
    The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.
    (i) It is also called as the earlywood
    (ii) In spring season cambium produces xylem elements with narrow vessels
    (iii) It is lighter in colour
    (iv) The springwood along with autumn wood shows alternate concentric rings forming annual rings
    (v) It has lower density
    Choose the correct answer from the options given below:
    1. (1)(i),(iii),(iv) and (v) Only
    2. (2)(i), (ii) and (iv) Only
    3. (3)(iii), (iv) and (v) Only
    4. (4)(i),(ii),(iv) and (v) Only
  3. 33.
    The balloon-shaped structures called tyloses :-
    1. (1)Are extensions of xylem parenchyma cells into vessels
    2. (2)Are linked to the ascent of sap through xylem vessels
    3. (3)Originate in the lumen of vessels
    4. (4)Characterize the sapwood
  4. 34.
    In land plants, the guard cells differ from other epidermal cells in having
    1. (1)Mitochondria
    2. (2)Endoplasmic reticulum
    3. (3)Chloroplasts
    4. (4)Cytoskeleton
  5. 35.
    Passage cells are thin-walled cells found in:-
    1. (1)Central region of style through which the pollen tube grows towards the ovary
    2. (2)Endodermis of roots facilitating rapid transport of water from cortex to pericycle
    3. (3)Phloem elements that serve as entry points for substances for transport to other plant parts
    4. (4)Testa of seeds to enable emergence of growing embryonic axis during seed germination.
  6. 36.
    Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:
    1. (1)Closure of stomata
    2. (2)Flaccidity of bulliform cells
    3. (3)Shrinkage of air spaces in spongy
      mesophyll
    4. (4)Tyloses in vessels
  7. 37.
    Which one of the following is not a lateral meristem?
    1. (1)Intercalary meristem
    2. (2)Intrafascicular cambium
    3. (3)Interfascicular cambium
    4. (4)Phellogen
  8. 38.
    Read A to D and tell the correct order of components from outer side to inner side in a young dicot stem.
    (i) Cortex (ii) Pericycle
    (iii) Epidermis (iv) Pith
    1. (1)iii, iv, ii, i
    2. (2)i, ii, iii, iv
    3. (3)iii, i, ii, iv
    4. (4)iii, ii, i, iv
  9. 39.
    Read the different components from (a) to (d) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem:
    (i) Secondary cortex (ii) Wood
    (iii) Secondary phloem (iv) Phellem
    The correct order is :
    1. (1)(iv), (iii), (i), (ii)
    2. (2)(iii), (iv), (ii), (i)
    3. (3)(i), (ii), (iv), (iii)
    4. (4)(iv), (i), (iii), (ii)
  10. 40.
    Kranz anatomy is one of the characteristics of the leaves of
    1. (1)Potato
    2. (2)Wheat
    3. (3)Sugarcane
    4. (4)Mustard
  11. 41.
    Interfascicular cambium is present between:
    1. (1)Primary xylem and primary phloem
    2. (2)Pericycle and endodermis
    3. (3)Two vascular bundles
    4. (4)Secondary xylem and secondary phloem
  12. 42.
    Which of the following is made up of dead cells?
    1. (1)Collenchyma
    2. (2)Phellem
    3. (3)Phloem
    4. (4)Xylem parenchyma
  13. 43.
    Which of the following is not a character of collenchyma tissue?
    1. (1)They occur in layers below epidermis in dicotyledonous plants.
    2. (2)They consist of cells with thick corners due to cellulose deposition.
    3. (3)They are usually dead and without protoplasts.
    4. (4)They provide mechanical support to the growing part of the plant.
  14. 44.
    Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :-
    1. (1)Hydrophytes
    2. (2)Xerophytes
    3. (3)Mesophytes
    4. (4)Epiphytes
  15. 45.
    The vascular cambium normally gives rise to :
    1. (1)Primary phloem
    2. (2)Secondary xylem
    3. (3)Periderm
    4. (4)Phelloderm
  16. 46.
    The transverse section of a plant shows following anatomical features:
    (i) Large number of scattered vascular bundles surrounded by bundle sheath.
    (ii) Large conspicuous parenchymatous ground tissue.
    (iii) Vascular bundles conjoint and closed.
    (iv) Phloem parenchyma absent.
    Identify the category of plant and its part :-
    1. (1)Dicotyledonous root
    2. (2)Monocotyledonous stem
    3. (3)Monocotyledonous root
    4. (4)Dicotyledonous stem
  17. 47.
    Specialised epidermal cells surrounding the guard cells are called :-
    1. (1)Complementary cells
    2. (2)Subsidiary cells
    3. (3)Bulliform cells
    4. (4)Lenticels
  18. 48.
    Vascular bundles in monocotyledons are considered closed because:
    1. (1)A bundle sheath surrounds each bundles
    2. (2)There is no secondary growth
    3. (3)There are no vessels with perforations
    4. (4)Xylem is surrounded all around by phloem
  19. 49.
    Select the correct statement related to the activity of cork cambium.
    1. (1)The cork differentiated from cork cambium, is impervious to water due to deposition of tannins and reins.
    2. (2)Cuts the cells only on the outer side.
    3. (3)Cuts the cells on inner as well as outer side.
    4. (4)The outer cells differentiate into phelloderm.
  20. 50.
    Tracheids differ from other tracheary elements in:
    1. (1)Having casparian strips
    2. (2)Being imperforate
    3. (3)Lacking nucleus
    4. (4)Being lignified
  21. 51.
    Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by:-
    1. (1)Position of protoxylem
    2. (2)Absence of secondary xylem
    3. (3)Absence of secondary phloem
    4. (4)Presence of cortex
  22. 52.
    In the dicot root the vascular cambium originates from:-
    1. (1)Tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem.
    2. (2)Cortical region.
    3. (3)Parenchyma between endodermis and pericycle.
    4. (4)Intrafascicular and interfascicular tissue in a ring.
  23. 53.
    Tracheids differ from other tracheary element in:
    1. (1)Having casparian strips
    2. (2)Being imperforate
    3. (3)Lacking nucleus
    4. (4)Being lignified
  24. 54.
    Vascular bundles in monocotyledons are considered closed because:
    1. (1)Cambium is absent
    2. (2)There are no vessels with perforations
    3. (3)Xylem is surrounded all around by phloem
    4. (4)A bundle sheath surrounds each bundle
  25. 55.
    Specialized epidermal cells surrounding the guard cells are called:
    1. (1)Complementary cells
    2. (2)Subsidiary cells
    3. (3)Bulliform cells
    4. (4)Lenticels
  26. 56.
    As compared to a dicot root, a monocot root has
    1. (1)Many xylem bundles
    2. (2)Inconspicuous annual rings
    3. (3)Relatively thicker periderm
    4. (4)More abundant secondary xylem
  27. 57.
    Identify the wrong statement in context of heartwood:
    1. (1)It is highly durable
    2. (2)It conducts water and minerals efficiently
    3. (3)It comprises dead elements with highly lignified walls
    4. (4)Organic compounds are deposited in it
  28. 58.
    The type of tissue commonly found in the fruit wall of nuts is:
    1. (1)Parenchyma
    2. (2)Collenchyma
    3. (3)Sclerenchyma
    4. (4)Sclereid
  29. 59.
    Give below is the diagram of a stomatal apparatus. In which of the following, all the four parts
    labelled as A, B, C, D are correctly identified?
    1. (1)A: Subsidiary cell, B: Epidermal cell, C: Guard cell, D: Stomatal aperture
    2. (2)A: Guard cell, B: Stomatal aperture, C: Subsidiary cell, D: Epidermal cell
    3. (3)A: Epidermal cell, B: Guard cell, C: Stomatal aperture, D: Subsidiary cell
    4. (4)A: Epidermal cell, B: Subsidiary cell, C: Stomatal aperture , D: Guard cell
  30. 60.
    In barley stem vascular bundles are :-
    1. (1)Closed and radial
    2. (2)Open and scattered
    3. (3)Closed and scattered
    4. (4)Open and in a ring