All organisms may be classified (grouped) into five kingdoms - Leaving Cert Biology - Question 13 - 2012
Question 13
All organisms may be classified (grouped) into five kingdoms.
(i) Suggest one advantage of classifying organisms.
(ii) Name the kingdom to which bacteria belong.
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Worked Solution & Example Answer:All organisms may be classified (grouped) into five kingdoms - Leaving Cert Biology - Question 13 - 2012
Step 1
Suggest one advantage of classifying organisms.
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Answer
Classifying organisms helps in the identification and categorization of living things, making it easier for scientists to study biodiversity and understand relationships among different species.
Step 2
Name the kingdom to which bacteria belong.
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Answer
Bacteria belong to the kingdom Monera.
Step 3
Give one example of the economic importance of bacteria.
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Bacteria play a crucial role in food production, such as in the fermentation process for yogurt and cheese.
Step 4
Draw a large labelled diagram of a typical bacterial cell.
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The diagram should include key features such as the cell membrane, cytoplasm, and other structures like ribosomes and cell wall, properly labeled.
Step 5
Bacteria may be classified by their shape. Name any two bacterial shapes.
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Two common bacterial shapes are bacillus (rod-shaped) and coccus (spherical).
Step 6
Name the method by which bacteria reproduce.
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Bacteria reproduce by binary fission, a process in which a single cell divides into two identical daughter cells.
Step 7
What are pathogenic bacteria?
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Pathogenic bacteria are harmful microorganisms that can cause diseases in hosts, including humans, animals, and plants.
Step 8
State two factors affecting the growth of bacteria.
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Answer
Two factors influencing bacterial growth are temperature and availability of nutrients such as food and water.
Step 9
Name the parts labelled A and B.
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A is the stolon or hypha, and B is the rhizoid.
Step 10
Give two functions of structure B.
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Structure B (rhizoid) serves to anchor the fungus to its substrate and absorbs nutrients and moisture from the environment.
Step 11
Describe the role of part C in the reproduction of Rhizopus.
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Part C is responsible for the production of spores, which are released into the environment to facilitate asexual reproduction.
Step 12
What is meant by saprophytic nutrition?
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Saprophytic nutrition refers to a mode of nutrition where an organism obtains its nutrients from decaying organic matter.
Step 13
Give one beneficial use of fungi.
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Fungi are used in antibiotic production, such as the creation of penicillin, which is crucial in medical treatments.
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