In each of the following, state two features that show how the named structure is adapted to carry out the named function - Leaving Cert Biology - Question 14(c) - 2017
Question 14(c)
In each of the following, state two features that show how the named structure is adapted to carry out the named function.
(i) The lens of the eye for focusing ligh... show full transcript
Worked Solution & Example Answer:In each of the following, state two features that show how the named structure is adapted to carry out the named function - Leaving Cert Biology - Question 14(c) - 2017
Step 1
The lens of the eye for focusing light.
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Answer
The lens is curved, allowing it to change shape and adjust focus for near or distant objects.
It is transparent, enabling light to pass through without obstructions.
Step 2
A neuron for transmitting impulses.
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Answer
Neurons have insulating myelin sheaths that allow for rapid conduction of electrical impulses.
They possess dendrites that receive signals and axons that transmit them to other neurons.
Step 3
An intestinal villus for absorbing soluble food.
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The wall of the villus is one cell thick, facilitating efficient nutrient absorption directly into the blood.
It has a rich blood supply, ensuring that absorbed nutrients can quickly enter the bloodstream.
Step 4
A glomerulus for filtering blood.
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The glomerulus consists of capillaries that maintain high blood pressure, aiding filtration.
Its structure is designed with a large surface area, enhancing the efficiency of the filtration process.
Step 5
A wind-pollinated flower for pollination.
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It often has small or absent petals which reduce reliance on animal pollinators.
The flower produces a vast amount of lightweight pollen that can be easily carried by the wind.
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