Neco 2020 Agricultural Science Question 37

Practice objective / multiple choice question 37 from the 2020 Neco Agricultural Science examination.

Neco 2020 Agricultural Science Objective / Multiple Choice Hard Difficulty
Question 37 NECO • 2020 • AGRICULTURAL_SCIENCE • objective

A forest of 20 hectares is to be managed for a sustainable annual timber yield of 3 tonnes per hectare. Each tree, when harvested at age 25 years, yields 0.6 tonnes of timber. The forest is planted in even‑aged blocks and a natural mortality rate of 2\% per year affects all age classes. Assuming the forest is harvested each year by cutting the cohort of trees that have reached 25 years, determine (a) the number of trees that must be harvested each year from the whole forest, and (b) the initial planting density (trees per hectare) required to sustain this harvest indefinitely.

Answer Options

A. (a) 80 trees per year; (b) about 180 trees per hectare
B. (a) 120 trees per year; (b) about 250 trees per hectare
Correct Answer C. (a) 100 trees per year; (b) about 208 trees per hectare
D. (a) 150 trees per year; (b) about 300 trees per hectare
Correct Answer
C
Correct Option:
(a) 100 trees per year; (b) about 208 trees per hectare

About This Question

This is Neco 2020 Agricultural Science Question 37. It is one of the objective questions from the 2020 Neco Agricultural Science examination.

Difficulty level: Hard .

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