Waec Model Questions Vol1 2019 Agricultural Science Question 1

Practice practical question 1 from the 2019 Waec Model Questions Vol1 Agricultural Science examination. This question covers Agricultural Ecology .

Waec Model Questions Vol1 2019 Agricultural Science Practical
Topic: Agricultural Ecology
Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • AGRICULTURAL_SCIENCE • practical

A group of students carried out a biodiversity survey of a 20 m × 20 m grassland using the quadrat method. Four 1 m² quadrats (Q1–Q4) were randomly placed and the number of individuals of each plant species recorded as shown in the table. | Quadrats | Species A | Species B | Species C | Species D | |----------|-----------|-----------|-----------|-----------| | Q1 | 12 | 5 | 3 | 0 | | Q2 | 8 | 7 | 5 | 0 | | Q3 | 10 | 4 | 6 | 0 | | Q4 | 9 | 6 | 4 | 1 | Using the data provided, answer the following:

Question Parts

( a )
Calculate the average number of species (species richness) per quadrat.
( b )
Identify the most abundant species in the whole surveyed area.
( c )
Compute Simpson’s Diversity Index (D) for the whole area 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 of all species. Give the reciprocal \( 1/D \) as a measure of diversity.

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About This Question

This is Waec Model Questions Vol1 2019 Agricultural Science Question 1. It is one of the practical questions from the 2019 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Agricultural Ecology .

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