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CSS :: Forestry Environment


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

32.  In submerged hydrophytes, which of the following is present?
A. Air spaces B. Cuticle
C. Well developed sclerenchyma D. Well developed vascular tissues

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

34.  In Opuntia, the leaves are modified into:
A. Scales B. Stolons
C. Spines D. Phylloclades

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

36.  Succulents are likely be found in:
A. Tropical rain forests B. Deciduous forests
C. Deserts D. Tundras

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

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

39.  Hydrophytes usually have:
A. Well developed stomata B. Well developed aerenchyma
C. Well developed root system D. Well developed vascular system

40.  Desert plants are generally:
A. Succulents B. Heterophyllous
C. Herbaceous D. Viviparous




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