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The bar chart shows the mass of wheat harvested on a farm each year from 2009 to 2015 - Edexcel - GCSE Biology - Question 5 - 2017 - Paper 1
Question 5
The bar chart shows the mass of wheat harvested on a farm each year from 2009 to 2015. (a) Put a cross (X) in the box next to your answer. Which of the statements a... show full transcript
Worked Solution & Example Answer:The bar chart shows the mass of wheat harvested on a farm each year from 2009 to 2015 - Edexcel - GCSE Biology - Question 5 - 2017 - Paper 1
Step 1
Put a cross (X) in the box next to your answer.
Answer
To determine which statements are true, we need to analyze the data from the bar chart provided.
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Statement 1: The mass of wheat harvested increased every year.
Analysis: From the chart, we can see that the mass of wheat harvested fluctuated over the years, with no consistent increase every year. Thus, this statement is false.
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Statement 2: In 2012, 100 tonnes of wheat was harvested.
Analysis: Referring to the bar for 2012, it clearly shows that 100 tonnes was indeed harvested. So, this statement is true.
Therefore, we select option B: statement 2 only.
Step 2
Describe how wheat plants absorb water from the soil.
Answer
Wheat plants absorb water from the soil primarily through their roots. The process involves several key mechanisms:
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Osmosis: Water moves from an area of higher concentration in the soil to an area of lower concentration in the root cells. The root cells have a lower concentration of water compared to the surrounding soil, allowing water to enter the roots.
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Root Hairs: The root hairs increase the surface area for absorption. They are fine extensions of root cells and significantly enhance the plant’s ability to take up water and nutrients from the soil.
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Capillary Action: Water can move through the small spaces in the soil by capillary action, which helps the water reach the roots of the wheat plants.
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Active Transport: The roots can also actively transport minerals, which can aid in pulling water into the roots as the concentration gradient changes.
Overall, these processes work together to ensure that wheat plants efficiently absorb the necessary water from the soil to thrive.