Waec Model Questions Vol1 2021 Agricultural Science Question 1

Practice practical question 1 from the 2021 Waec Model Questions Vol1 Agricultural Science examination. This question covers Biodiversity, Ecological Management, Insect Sampling .

Waec Model Questions Vol1 2021 Agricultural Science Practical
Topics: Biodiversity Ecological Management Insect Sampling
Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • AGRICULTURAL_SCIENCE • practical

A field trial was set up to evaluate the effect of inter‑cropping on insect biodiversity in a maize farm. Ten 5 m × 5 m quadrats were sampled and the number of individuals of each insect species recorded as follows: | Species | Number of individuals | |---------|-----------------------| | A | 40 | | B | 25 | | C | 20 | | D | 10 | | E | 5 | Using this data, answer the questions below.

Question Parts

( a )
State the primary objective of this biodiversity assessment.
( b )
Calculate the Shannon‑Wiener diversity index (H') for the sampled community. Use natural logarithms and give your answer to two decimal places.
( c )
If a healthy agro‑ecosystem is considered to have H' ≥ 1.80, suggest two practical management measures that could be adopted to raise the diversity index in this field.
( d )
Identify one abiotic factor that could be limiting insect diversity in the sampled area and propose a method to control or mitigate its effect.

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About This Question

This is Waec Model Questions Vol1 2021 Agricultural Science Question 1. It is one of the practical questions from the 2021 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Biodiversity, Ecological Management, Insect Sampling .

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