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Which row in the table represents the eye when a person is in a dark room? | Front view of iris and pupil | Circular iris muscles | |------------------------------|----------------------| | A | contracted | | B | relaxed | | C | relaxed | | D | contracted | - OCR Gateway - GCSE Biology - Question 13 - 2020 - Paper 1

Question 13

Which-row-in-the-table-represents-the-eye-when-a-person-is-in-a-dark-room?--|-Front-view-of-iris-and-pupil-|-Circular-iris-muscles-|-|------------------------------|----------------------|-|-A----------------------------|-contracted-----------|-|-B----------------------------|-relaxed--------------|-|-C----------------------------|-relaxed--------------|-|-D----------------------------|-contracted-----------|-OCR Gateway-GCSE Biology-Question 13-2020-Paper 1.png

Which row in the table represents the eye when a person is in a dark room? | Front view of iris and pupil | Circular iris muscles | |------------------------------|... show full transcript

Worked Solution & Example Answer:Which row in the table represents the eye when a person is in a dark room? | Front view of iris and pupil | Circular iris muscles | |------------------------------|----------------------| | A | contracted | | B | relaxed | | C | relaxed | | D | contracted | - OCR Gateway - GCSE Biology - Question 13 - 2020 - Paper 1

Step 1

Identify the appropriate condition of the eye in darkness

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Answer

In a dark room, the pupil dilates to allow more light to enter the eye. This is controlled by the circular iris muscles, which relax in a low-light environment. Therefore, we need to look for the row in the table that indicates a 'relaxed' muscle condition.

Step 2

Find the correct row in the table

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Answer

Looking at the table, option B shows the iris and pupil in a relaxed state, which is consistent with the physiological response of the eye when in darkness.

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Identify the appropriate condition of the eye in darkness

Find the correct row in the table

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