CSS :: Forestry Environment
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31. |
Among the plants listed, point out one that does not fit into biological group represented by other plants |
A. |
Euphorbia |
B. |
Acacia |
C. |
Vallisneria |
D. |
Aloe |
Answer: Option C
Explanation:
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32. |
In submerged hydrophytes, which of the following is present? |
A. |
Air spaces |
B. |
Cuticle |
C. |
Well developed sclerenchyma |
D. |
Well developed vascular tissues |
Answer: Option A
Explanation:
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33. |
The storage capacity of a soil equals: |
A. |
Field capacity |
B. |
Field capacity less capillary water |
C. |
Field capacity less hygroscopic water |
D. |
Field capacity plus gravitational water |
Answer: Option C
Explanation:
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34. |
In Opuntia, the leaves are modified into: |
A. |
Scales |
B. |
Stolons |
C. |
Spines |
D. |
Phylloclades |
Answer: Option C
Explanation:
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35. |
Mechanical tissues and xylem are highly reduced in Hydrilla because: |
A. |
Water provides the support and there is no problem for the absorption and conduction of water |
B. |
Otherwise the weight of these tissues would drown the plant |
C. |
Of the anaerobic conditions created by submergence |
D. |
Otherwise translocation of food would have been interrupted |
Answer: Option A
Explanation:
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36. |
Succulents are likely be found in: |
A. |
Tropical rain forests |
B. |
Deciduous forests |
C. |
Deserts |
D. |
Tundras |
Answer: Option C
Explanation:
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37. |
Which of the following are plants of one group? |
A. |
Mangifera and Rhizophora |
B. |
Rhizophora and Avicennia |
C. |
Rhizophora and Balanophora |
D. |
Avicennia and Balanophora |
Answer: Option B
Explanation:
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38. |
Field capacity is the extent to which a soil can hold: |
A. |
Gravitational water |
B. |
Capillary water |
C. |
Hygroscopic water |
D. |
Capillary water plus hygroscopic water |
Answer: Option D
Explanation:
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39. |
Hydrophytes usually have: |
A. |
Well developed stomata |
B. |
Well developed aerenchyma |
C. |
Well developed root system |
D. |
Well developed vascular system |
Answer: Option B
Explanation:
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40. |
Desert plants are generally: |
A. |
Succulents |
B. |
Heterophyllous |
C. |
Herbaceous |
D. |
Viviparous |
Answer: Option A
Explanation:
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