Neco 2025 Agricultural Science Question 1

Practice practical question 1 from the 2025 Neco Agricultural Science examination. This question covers Agricultural Ecology .

Neco 2025 Agricultural Science Practical

Topic: Agricultural Ecology

Question 1 NECO • 2025 • AGRICULTURAL_SCIENCE • practical

A farmer wants to assess the insect biodiversity in a 10 m × 10 m field. Five sweep‑net samples were taken at random points. The numbers of individuals of each insect species recorded are shown in the table below. | Species | Number of individuals | |---------|------------------------| | A | 12 | | B | 8 | | C | 5 | | D | 3 | | E | 2 | | F | 0 | Using the data, answer the following:

( a )

State the species richness (S) and the total number of individuals (N) recorded.

( b )

Calculate Simpson’s Diversity Index \(D = \frac{\sum n_i (n_i-1)}{N(N-1)}\) where \(n_i\) is the number of individuals of species i.

( c )

State the Simpson’s Index of Diversity \(1-D\) and interpret the result in terms of the field’s insect diversity.

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This is Neco 2025 Agricultural Science Question 1. It is one of the practical questions from the 2025 Neco Agricultural Science examination.

The question covers Agricultural Ecology .

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