Chap.10 Forms and functions in plants
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1.
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2.
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Lack o f chlorophyll
in plants causes: (a) Late Blight (b) Early Blight (c) Chlorosis (d) All of these |
C |
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3.
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Release of nitrates
by saprophytic bacteria helps in: (a) Oxygen Cycle (b) Nitrogen Cycle (c) Carbon Cycle (d) None of them |
B |
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4.
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The traps of
carnivorous plants contain (a) Phospholipids (b) Hormones (c) Sugar (d) Digestive Enzymes |
D |
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5.
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Thick walled dead
cells like tracheid vessels are included in: (a) Parenchyma (b) Sclerenchyma (c) Collenchyma (d) None of These |
B |
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6.
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The increase in
thickness of the plant due to the activity of cambium is: (a) Primary Growth (b) Secondary Growth (b) Tertiary Growth D) None of these |
B |
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7.
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The movement
restricted to bifacial organs like the leaves and petals of flower is the (a) Tactic Movement (b) Nastic Movement (c) Tropic Movement (d) None of these |
D |
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8.
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Some flowers such as
those of tobacco and lady of the night close up during the day time and open at night.
The closing of such flowers and leaves during the day time is: (a) Diurnal Sleep (b) Nocturnal Sleep (c) Phototropic
Effect (d) Both a ando |
D |
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9.
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Chlorosis is: (a) The uptake of the
micronutrient chlorine by a plant (b) The formation of
chlorophyll within the thylakoid membranes of a plant (c) Yellowing leaves
due to decreased chlorophyll production (d) A contamination
of glasswase in hydroponic culture |
C |
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10. |
Carnivorous plants
have evolved mechanisms for trapping and digesting small animals. The producer of this
digestion are used to supplement the plant's supply of: (a) Carbohydrates (b) Nitrites (c) Lipids and
Steroids (d)
Water |
B |
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11. |
All of the following
are element that plants need in very small amounts (micronutrients) except: (a) Hydrogen (b) Iron (c) Chlorine (d) Copper |
A |
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12. |
The tissue most
likely to provide flexible support is the: (a) Epidermis (b) Sclerenchyma (c) Parenchyma cell (d) Collenchyma |
A |
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13. |
Fibers like hemp,
flex are made up of: (a) Epidermis (b) Parenchyma (C) Sclerenchyma (d) Collenchyma |
C |
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14. |
The apical meristem
in the root: (a) Is located
behind the root cap (b) Produces cells
which become incorporated into the root cap (c)Gives rise to the
primary meristematic tissue (d) All of these |
A |
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15. |
______provide the
major force for the movement of water and solutes form roots to leaves (a) Translocation (b) Bulk Flow (c) Transcription d) Root Pressure |
D |
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16. |
Which bond are
responsible for the cohesion of water molecules? (a) lonie (b) Hydrogen c) Non Polar
Covalent (d) Polar Covalent |
B |
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17. |
In a sugar sink such
as a taproot sugar is converted into: (a) Fatty Acid (b) Proteins (c) Glycogen (d) Starch |
D |
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18. |
Plants are able to
detect photoperiod changes by the (a) Attention of the
two forms of phytochrome (b) Settling of
amyloplasts (c) Direction of the
light source (d) Movement of
potassium ions |
A |
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19. |
Which of the
following does not apply to meristematic cells? (a) Small in Size (b) Prominent Nuclei (c) Thicle Walled (d) None Vacuolated |
C |
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20. |
Due to which of the
following, flowers of tulip open in daytime and close at night (a) Photropism (b) Photonasty (c) Thigmotropism (d) Chemotropism |
B |
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21. |
Apical meristem is
responsible for the initiation of: (a) Primary Growth (b) Secondary Growth (c) Both of these (d) None of these |
B |
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22. |
Apical meristem is
located at the tip of which one of the following? a) Root Only (b) Stem Only (C) both a and b (d) Rhizoids |
C |
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23. |
Which of the
following is true for meristematic cell? (a) Cell is large
and vacuolated (b) Cell is small
and non vacuolated (c)Cell is large and
non vacuolated (d) Cell is small
and vacuolated |
B |
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24. |
Which one of the
following tissues has very high rate
of respiration in plants? (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) Meristematic |
D |
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25. |
Which are of the
following is not a plant hormone? a) Auxin (b) Gibberellin (c) Insulin (d) Cytokinins |
C |
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26. |
Which one of the
following promotes the cell enlargement? a) Cytokinin (b) Gibberellin (c) Auxin (d) Both a and b |
C |
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27. |
A fungus causing
Foolish seedling disease in rice contains a hormone called? (a) Auxi (b) Gibberellium (d) Cytokinium (d) Ethylene |
B |
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28. |
What is the role of
cytokins in plants? (a) Promotion of
cell division (b) Rapid cells
maturation (c) Slow cells
maturation (d) Repid cells
enlargement |
A |
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29. |
Apical dominance
controls the development of which one of the following? (a) Primary Root (b) Root Hair (o) Lateral Buds (d) Apical Buds |
A |
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30. |
A long day plant has
a photo period of 13L/11D, which one of the following photo periods will
initiate following in it? (a) 12L/12D (b) 10L/14D (c)9L/15D (d) 141/10D |
A |
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31. |
Which of the
following is called primary nutrient? (a) (b) N (C) P (d) All |
D |
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32. |
Which nutrient is
less available in soil? (a) Primary Nutrient (b) Micronutrient (c) Macronutrient (d) Both a and c |
D |
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33. |
Chlorosis or
yellowing of leaves occurs as result in deficiency of: (a) N (b) Mg (c)C (d) All |
D |
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34. |
Passive trap is
found in: (a) Nepenthes (b) Darlingtonia (c) Sarracenia (d) All of these |
D |
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35. |
In monocot plants
the guard cells are: (a) Kidney Shaped (b) Bean Shaped (c) Dumbell Shape (d) Both a and b |
C |
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36. |
The non living
pathway of molecules in roots to xylem is called: (a) Apoplast (b) Symplast (c) Vaccular Plast (d) Zig-Zag Movement |
A |
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37. |
The attractive force
between molecules of water and other substance is called: (a) Cohesion (d) Adhesion (c) Tension (d) None of these |
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38. |
The carbohydrates
translocated across phloem in the form of: (a) Sucrose (b) Glucose (c) Fructose (d) All of these |
A |
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39. |
All of the following
are hydrophytes except: (a) Hydrilla (b) Vallisneria (c) Potamogeton (d) Zizyphus |
D |
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40. |
Stone cells are
found in: (a) Hoya Carnosa (b) Phyrus (c) Both a and b (d) None of these |
C |
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