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In your Biology course, you performed a first-hand investigation to gather information about structures in plants that assist in the conservation of water - HSC - SSCE Biology - Question 19 - 2001 - Paper 1
Question 19
In your Biology course, you performed a first-hand investigation to gather information about structures in plants that assist in the conservation of water. (a) Desc... show full transcript
Worked Solution & Example Answer:In your Biology course, you performed a first-hand investigation to gather information about structures in plants that assist in the conservation of water - HSC - SSCE Biology - Question 19 - 2001 - Paper 1
Step 1
Describe the procedure you followed.
Answer
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Select Plant Samples: Choose a variety of plants known for their water conservation structures, such as succulents and desert plants.
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Gather Equipment: Collect necessary tools including a measuring cylinder, a stopwatch, scissors, and petri dishes.
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Measure Initial Conditions: Cut a small section of each plant, ensuring a similar size for comparison. Measure the initial water content of each sample using the weighing scale.
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Simulate Conditions: Place the plant samples in different environments (e.g., direct sunlight, shade) to observe how they conserve water in varying conditions.
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Observe and Record: Check the samples periodically (e.g., every hour) and record the moisture levels in the petri dishes, noting any physical changes in the plants.
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Analyze Data: After a specific duration, analyze how different plants conserved water using the recorded data and draw conclusions based on the observations.
Step 2
Identify TWO safe work practices needed during this investigation.
Answer
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Wear Protective Gear: Ensure the use of gloves and goggles while handling plants and tools to prevent injury or allergic reactions.
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Handle Tools Carefully: Use scissors and other sharp instruments with caution to avoid cuts, ensuring they are only used when necessary and stored safely afterward.