The diagram shows two vessels found in the stems of plants - Edexcel - GCSE Biology - Question 5 - 2013 - Paper 1
Question 5
The diagram shows two vessels found in the stems of plants.
(a)
(i) Name the vessel that transports water and mineral ions through the plant.
(ii) Energy is need... show full transcript
Worked Solution & Example Answer:The diagram shows two vessels found in the stems of plants - Edexcel - GCSE Biology - Question 5 - 2013 - Paper 1
Step 1
Name the vessel that transports water and mineral ions through the plant.
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Answer
The vessel that transports water and mineral ions through the plant is called the xylem.
Step 2
Which cell component supplies energy that can be used for the transport of sugars through the plant?
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Answer
The component that supplies energy for sugar transport is mitochondria. They are responsible for producing ATP, which is used in various cellular processes.
Step 3
Suggest why the percentage of blood going to each of the body parts changes when a person exercises.
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Answer
During exercise, the muscles require more oxygen and nutrients to sustain increased activity. Consequently, the body redirects blood flow away from less active areas, such as the brain and liver, to meet the heightened demands of the muscles, resulting in a decrease in blood percentages for those organs.
Step 4
State a disadvantage of anaerobic respiration.
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Answer
A disadvantage of anaerobic respiration is that it produces lactic acid as a byproduct, which can accumulate in muscles and lead to fatigue and cramping.
Step 5
Describe how the circulatory system transports substances around the body.
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Answer
The circulatory system transports substances around the body through the bloodstream, which consists of blood vessels including arteries, veins, and capillaries. The heart pumps oxygenated blood from the lungs through the arteries to the body tissues. Nutrients absorbed from the digestive tract are carried to cells via the blood. Waste products are similarly transported back to the organs for excretion, ensuring that essential substances are delivered and waste is removed efficiently.
