A. Supply of clean air
B. They absorb carbon-dioxide from the atmosphere and release oxygen
C. Both (a) & (b)
D. None of these
Related Mcqs:
- 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 - Use of Media such as _______ can go a long way to convince the people regarding the important role vegetation plays in soil and water conservation and improvement of the landscape:
A. T.V.
B. Radio
C. Film
D. Strips
E. All of the above - Fodder from trees is:
A. When grass is scarce, millions of hungry livestock has to fall back upon fodder trees
B. While oaks, horse chestnut, birdcherry, poplars, robinia etc
C. Both (a) & (b)
D. None of these - Trees as source of protein by which way:
A. Forests are the natural habitat of all wildlife
B. A large variety of trees, shrubs and grasses in different ecological zones
C. Which should support a large number of birds, mammals and reptiles for cover as well as food
D. All of the above - _____ have all drawn inspiration from trees:
A. Poets
B. Soofis
C. Mystics
D. Writers
E. All of the above - Trees and wildlife is:
A. Forest are the natural habitat of all wildlife
B. Wildlife management is impossible without conservation of environment conductive to its protection and multiplication
C. Both (a) & (b)
D. None of these - Trees and the farmlands is:
A. All the forest influences and forest industry developments
B. It is the ever-closer relationship between farming and forestry that is of over riding importance for the future
C. Both (a) & (b)
D. None of these - Trees and water is:
A. A number of processes which influence water movement from the time it falls on the watersheds
B. It leaves the area as stream flow or returns to the atmosphere through evaporation
C. Both (a) & (b)
D. None of these - Trees and climate is:
A. Every one has experienced the blissful effect of trees on amelioration of climate
B. Stopping under a tree for shade or shelter, driving into a tree lined road from a desert country or turning of a wind storm into a gentle breeze in a forest are common experience
C. Both (a) & (b)
D. None of these - Importance of trees are:
A. One of the most precious gifts of God to mankind
B. When planted over large areas, they constitute a valuable resource
C. A resource much superior to other bounties and blessing because not only it is renewable but also it is multipurpose one
D. All of the above
The correct answer to the question: "Trees play an important role in:" is "Both (a) & (b) ".