Environmental Science and Ecology - Mock Test 40

Question 391

_______ consists in clear-cutting a fixed area annually which is regenerated by coppice shoots?

A) Simple coppice system B) Complex coppice system C) Uniform system D) None of these

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Question 392

What is coppice system?

A) A systems where the crop originates from coppice and where the rotation of the coppice is short. B) A systems where the crop originates from coppice and where the rotation of the coppice is long. C) Both a & b D) None of these

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Question 393

Mulberry is introduced by ___________?

A) Upper planting B) Under planting C) Both a & b D) None of these

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Question 394

________ consists of a crop arranged in two different stories, one above the other; each story being approximately even-aged not of seedling as opposed to coppice origin?

A) Two-storied high forest B) Three-storied high forest C) Four-storied high forest D) Five -storied high forest

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Question 395

The principal disadvantages of the selection system are?

A) The quality of the timber may be inferior to that grown in even-aged crops. B) The whole are being always under regeneration. C) The light conditions provided by the irregular crop of mixed ages may result in the young growth having a poor chance to develop, except with shadebearing species. D) All of the above

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Question 396

Principal advantages of the selection system are?

A) This method is extremely simple B) Natural flora is preserved C) More volume per acre D) All of the above

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Question 397

"Manual of silviculture for Pakistan" authored by?

A) Simmons and H.M.Rana B) Champion, Seth and Kattak C) Ahmad Hussain D) None of these

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Question 398

Under which system mature trees are scattered over the whole area of the forest and felling should proceed annually over the whole area of the estate?

A) Selection system B) Irregular Shelterwood system C) Uniform system D) None of thes

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Question 399

Deodar normally found in?

A) Seashore of Karachi B) In the Hills of Punjab C) Plains of Punjab D) None of these

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Question 400

_______ is merely a modification of the uniform system where large quantities of advance growth of various ages and size even up to trees of 40 cm diameter are retained as part of the future crop?

A) Irregular Shelterwood system B) Coppice system C) Both a & b D) None of these

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