1.5 Ecosystem Study Fmquiz Homework Solution

1.5 Ecosystem Study FMQuiz Homework Solution

Q. In ecology the term flora refers to …

A. Plants

Q. How were you able to identify the different plants in the ecosystem that you investigated?

A. Key(s) or illustrations or guide book

Q. Name pieces of apparatus used to collect animals from an ecosystem.

A. Pooter; Beating tray; Pitfall trap; Net; etc.

Q. In ecology the term fauna refers to …

A. Animals

Q. In relation to a study of an ecosystem explain what a qualitative survey is.

A. What is present

Q. Give two possible sources of error that may have arisen in the course of your survey of plant species.

A. Misidentification; Non-random quadrat distribution; Not enough times; Miscount

Q. In relation to a study of an ecosystem explain what a quantitative survey is.

A. How many present

Q. What is a quadrat used for in your ecology studies?

A. Quantitative surveys e.g. distribution, frequency, cover

Q. Name one animal from the ecosystem you have studied and describe one way in which it is adapted to its habitat.

A. e.g. Grasshopper / Green colour

Q. What is meant by pollution?

A. Any harmful addition to the ecosystem

Q. List two ways of minimising waste.

A. Reduce; Reuse; Recycle

Q. State problems associated with waste disposal in Ireland.

A. Finding land for landfill sites; Litter; Pollution

Q. Name one human activity that causes pollution.

A. Fertiliser run-off

Q. State one role of microorganisms in waste management.

A. To consume waste

Q. Explain the term conservation.

A. Management of ecosystems

Q. Name two groups of micro-organisms in the soil which are responsible for decomposition.

A. Bacteria and Fungi

Q. What is meant by nitrogen fixation?

A. The conversion of nitrogen into nitrates

Q. Farmers add nitrate fertilizers to the soil but not if heavy rain is forecast. Why not?

A. Eutrophication

Q. Name an important group of biomolecules that plants make from nitrates.

A. Proteins

Q. Explain the term ectoparasite.

A. Organism living on host causing damage

Q. Organisms that return nutrients to the environment by decay are called …

A. Decomposers

Q. What is meant by nitrification?

A. The process of converting ammonia into nitrites and/or nitrites to nitrates

Q. What is the function of the nitrogen cycle?

A. To make nitrogen available for use by organisms

Q. Name a group of organisms involved in nitrogen fixation.

A. Bacteria; Monera; Lichens; Clover; Legumes

Page 1 of 2