When trees and shrubs are planted in long rows along streams, they are described as:

Related Mcqs:

1. Commonly grown flowering shrubs and trees are:

   A. Delonix regia, Bojer
   B. Millettia ovalifolia, Kurz
   C. Erytherina glabrescens, Parker
   D. Cassia fistula, Linn
   E. All of the above

2. The sequence: blue green algae – crustose lichen – foliose lichen – mosses – shrubs – dicot trees represent

   A. Genetic drift
   B. Ecological succession trend
   C. A food pyramid
   D. A phylogenetic trend

3. The best windbreaks approach is 100% crown density in the low-profile shurb, rows, and _____ density in the tall rows:

   A. 50%
   B. 60%
   C. 70%
   D. 80%

4. Common combinations of the agroforestry system in Pakistan are: Trees species: Agricultural crops grown with trees:

   A. Poplars: wheat / maize / turmeric / sugarcane / vegetables / fodder
   B. Eucalypts: wheat/sunflower/tomatoes/potatoes/chilies
   C. Simal: maize/sunflower/vegetables/fodder
   D. Shisham: turmeric/wheat/maize/vegetables
   E. All of the above

5. The role of shrubs in landscape designing is:

   A. The dividing line between a shrub and a tree is not always well marked
   B. The shrub will have many stems rising from the ground against the single one of a tree
   C. The colour of shrub flowers, its length of blooming and the season of bloom are very important
   D. All of the above

6. The factors should be considered before deciding about the pieces to be planted are:

   A. Ecolosocial consideration
   B. Purpose of plantation
   C. Effect on site
   D. Relative costs
   E. All of the above

7. _____ the new introductions in the Thal desert have shown promise and should be planted on a large scale to serve as a hedge against calamities:

   A. A. Modestia
   B. A. Tortilis
   C. A. Victoria
   D. All of the above

8. Fastest rate of growth recorded (excluding Bamboo, which is not a tree botanically but woody grass) is known from Albizia falcate, planted on 17th June 1974 in Sabah, ______.

   A. Malaysia
   B. China
   C. Korea
   D. Japan

9. In Pakistan, because of small field size, most often 2 or 3 rows windbreaks are used, and should expect the effects to reach only about 12H downwind and _____ upwind:

   A. 1H
   B. 2H
   C. 3H
   D. 4H

10. The cutting of trees from the forests of hill near a catchment area:

    A. Will have no effect on causing floods in plain
    B. May cause flood in plains in rainy season
    C. Will have no effect on climatic condition of that area
    D. Will benefit the mankind for more area for cultivation