Neco 2017 Agricultural Science Question 1

Practice practical question 1 from the 2017 Neco Agricultural Science examination. This question covers Biodiversity assessment, Quadrat sampling, Simpson's diversity index .

Neco 2017 Agricultural Science Practical
Topics: Biodiversity assessment Quadrat sampling Simpson's diversity index
Question 1 NECO • 2017 • AGRICULTURAL_SCIENCE • practical

A field of mixed crops is being surveyed to assess its biodiversity. Five 1 m² quadrats are randomly placed and the number of individuals of each plant species recorded as shown in the table below. | Quadrat | Species A | Species B | Species C | Species D | Species E | |---------|-----------|-----------|-----------|-----------|-----------| | 1 | 5 | 3 | 2 | 0 | 0 | | 2 | 4 | 4 | 0 | 2 | 0 | | 3 | 6 | 0 | 3 | 1 | 0 | | 4 | 0 | 5 | 4 | 0 | 1 | | 5 | 3 | 2 | 2 | 3 | 0 | Using the data, answer the following:

Question Parts

( a )
Determine the species richness (S) of the sampled area.
( b )
Calculate Simpson's Diversity Index (D) using the formula \( D = \frac{\sum n_i (n_i-1)}{N(N-1)} \) where \(n_i\) is the total number of individuals of species i and \(N\) is the total number of individuals recorded.
( c )
Based on the calculated index, suggest two management practices that could improve the biodiversity of the field.

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About This Question

This is Neco 2017 Agricultural Science Question 1. It is one of the practical questions from the 2017 Neco Agricultural Science examination.

The question covers Biodiversity assessment, Quadrat sampling, Simpson's diversity index .

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