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In an ecological study a certain insect population and that of predators was estimated in a certain grassland over a period of 1 year (one...

In an ecological study a certain insect population and that of predators was estimated in a certain grassland over a period of 1 year (one year).
52820191440.png
(a) Using the information above plot on the same axis the graph of number of insects and number of predators against time in months.
(b) Suggest what happens to the insect’s population during dry months.
(c) Explain the relationship between the insect population and that of predators.
(d) Suggest what happens to the predator’s population during dry month.
(e) Name the trophic level occupied by:-
(i) Predator
(ii) Insects
(iii) Grass
(f) Name the method used to estimate population of:
(i) Predator
(ii) Insects
(iii) Grass

Answers

sharon
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(b) Insect Population decrease; due to drying of grass hence less food and little habitat and camouflage from predators;
migration, stiff competition for food;
(c) As the insect population increases the number of predators increases; due to adequate food; and as the insect population
decreases the number of predators decrease due to less food;
(d) Decreases due to fewer insects hence less food; more competition (for food) hence migration or death which causes the
population to decrease;
(e) (i) Secondary consumers;
(ii) Primary consumers;
(iii) Producers
(f) (i) Capture recapture;
(ii) Capture recapture;
(iii) Quadrat / Belt transect;
sharon kalunda answered the question on May 28, 2019 at 11:47

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