Ecology Questions and Answers

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Name two benefits that a parasite derives from the host

asked Aug 23, 2021 in Biology Form 3 by anony mous

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State the causative agent and method of transmission of cholera.

asked Aug 23, 2021 in Biology Form 1 by anony mous

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Explain five abiotic factors that affect living organisms in an ecosystem.

asked Aug 19, 2021 in Biology Form 3 by anonymous

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The scheme below shows how energy is transmitted from the sun into the ecosystem.

asked Aug 19, 2021 in Biology Form 3 by anonymous

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State role of the following bacteria in the nitrogen cycle.

asked Aug 19, 2021 in Biology Form 3 by anonymous

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1 answer

A cow in a paddock was found to be infected with ticks. State the trophic level occupied by the cow and the tick

asked Aug 19, 2021 in Biology Form 3 by anonymous

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Some plants have rolled leaves. Explain the importance of such leaves to the plant.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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The leaves of a plant exposed directly to sunlight are often thicker than leaves found in the shade. Suggest two reasons for this observation.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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Briefly state the adaptations of plant leaves to a desert habitat.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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The flow chart below shows a food web in a terrestrial ecosystem.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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The diagram below represents a certain plant.

asked Aug 6, 2021 in Biology Form 1 by anony mous

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Study the food web below representing a certain ecosystem and use it to answer the questions that follow.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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State the reason why plants are included in a fish pond other than provision of food.

asked Aug 6, 2021 in Biology Form 1 by anony mous

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Distinguish between ecological niche and habitat.

asked Aug 6, 2021 in Biology Form 3 by anony mous

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A group of students carried out a study of the population growth of flour weevils. They put16grams and 64 grams of maize flour into two equal boxes K and L respectively. They then introduced equal numbers of weevils into the boxes. The boxes were kept under similar environmental conditions. The weevils were counted at intervals and the results recorded in the table below.

asked Jul 28, 2021 in Biology Form 3 by anonymous

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Name one other cause of water pollution apart from oil spills.

asked Jul 28, 2021 in Biology Form 3 by anonymous

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How does oil spills lead to death of fish.

asked Jul 28, 2021 in Biology Form 3 by anonymous

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The diagram below represents a feeding relationship in an ecosystem.

asked Jul 28, 2021 in Biology Form 3 by anonymous

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1 answer

To establish the population of tilapia using the capture method, 60 fish were captured and released. In the second capture out of 72 fish, 10 had been marked. Calculate the estimated population of tilapia. (show your working)

asked Jul 28, 2021 in Biology Form 3 by anonymous

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1 answer

Given the following organisms in a dam, construct a possible food chain for the dam.

asked Jul 26, 2021 in Biology Form 3 by anony mous

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