Photosynthesis Experiment Quiz

<p>Carry out the iodine test on the leaf after removing the foil (C)</p> Signup and view all the answers

<p>A plant that has not accumulated starch in its leaves (A)</p> Signup and view all the answers

<p>Absence of starch, indicating no photosynthesis (C)</p> Signup and view all the answers

<p>Digital thermometer (A)</p> Signup and view all the answers

<p>To determine if starch has been produced during photosynthesis (A)</p> Signup and view all the answers

<p>To ensure that any starch detected in the experiment is a result of the experiment and not from the plant's initial reserves</p> Signup and view all the answers

<p>To establish a baseline for starch presence (D)</p> Signup and view all the answers

<p>To establish a control setup (A)</p> Signup and view all the answers

<p>To record the exact areas of light exposure and non-exposure (A)</p> Signup and view all the answers

<p>To avoid damaging the leaf tissue (D)</p> Signup and view all the answers

<p>The presence or absence of starch in different parts of the leaf (B)</p> Signup and view all the answers

<p>A blue-black color indicating the presence of starch (D)</p> Signup and view all the answers

<p>No change in color when tested with iodine (B)</p> Signup and view all the answers

<p>Step 3 would show no starch, while Step 9 would show starch in some areas (D)</p> Signup and view all the answers

<p>Light is necessary for photosynthesis (C)</p> Signup and view all the answers

<p>By showing starch production only in the light-exposed areas (D)</p> Signup and view all the answers

<p>No starch production in any part of the leaf (A)</p> Signup and view all the answers

<p>Possibly more pronounced starch presence in light-exposed areas (C)</p> Signup and view all the answers

<p>The experiment may need to be repeated due to potential errors (D)</p> Signup and view all the answers

<p>Less starch production (B)</p> Signup and view all the answers

<p>Chlorophyll is likely involved in light-dependent reactions of photosynthesis (B)</p> Signup and view all the answers

An experiment designed to investigate whether light is necessary for photosynthesis in plants.

Removing starch from a plant's leaves before the experiment to measure starch production during photosynthesis.

A test used to identify the presence of starch in a leaf.

A set-up in an experiment that does not include the factor being studied.

The set-up in an experiment that has the factor being studied.

A factor that is changed in an experiment to observe its effect.

The amount of light a plant receives.

Material used to block light from reaching part of a leaf during the experiment.

A plant whose leaves have been depleted of starch, used to study starch production during photosynthesis.

The iodine test conducted before exposing the leaf to light, serving as a baseline to compare with the final test.

Covering a part of the leaf with aluminum foil, creating a control area that is not exposed to light.

A detailed drawing of the leaf showing the areas exposed and not exposed to light, essential for documenting the experimental setup.

Providing the plant with strong light for a specific period to facilitate photosynthesis.

Uncovering the covered part of the leaf after the light exposure, preparing it for the final iodine test.

The iodine test conducted after the light exposure, comparing the result with the initial test to determine starch presence.

Using a destarched plant eliminates any pre-existing starch, ensuring that any starch detected after the experiment is solely due to photosynthesis.

The control setup (wrapped part of the leaf) demonstrates the effect of light on photosynthesis by comparing it to the light-exposed part.

The experiment is conducted over a 4-hour period to allow sufficient time for photosynthesis to occur and produce a measurable amount of starch.

Using the same leaf for both exposed and unexposed parts ensures that all variables except light exposure are kept constant.

Using bright light provides optimal conditions for photosynthesis, maximizing the chance of starch production in the light-exposed part of the leaf.

The labelled diagram accurately records the exact areas of light exposure and non-exposure, helping to understand the experimental setup and results.

Removing the aluminium foil carefully avoids damaging the leaf tissue, ensuring the accuracy of the final iodine test results.

The final iodine test reveals the presence or absence of starch in different parts of the leaf, showcasing the impact of light on photosynthesis.

The part of the leaf exposed to light is expected to turn blue-black with iodine, indicating the presence of starch produced during photosynthesis.

The part of the leaf covered with aluminium foil is expected to remain unchanged with iodine, showing no starch production due to lack of light.

The initial iodine test will show no starch, while the final iodine test will show starch in the light-exposed part of the leaf, demonstrating the effect of light.

If the exposed part of the leaf turns blue-black with iodine, it indicates that light is necessary for photosynthesis.

If the results show starch production only in the light-exposed areas, it supports the aim to demonstrate that light is necessary for photosynthesis.

If the experiment is conducted in complete darkness, no starch production is expected in any part of the leaf, proving the importance of light.

Conducting the experiment for 8 hours might result in more pronounced starch presence in light-exposed areas due to extended photosynthesis.

If both covered and uncovered parts of the leaf show the same result, the experiment may need to be repeated due to potential errors or a real effect where light doesn't matter.

Using red light might result in less starch production compared to bright white light, as red light is less effective for photosynthesis.

The positive results of this experiment indicate that chlorophyll is likely involved in the light-dependent reactions of photosynthesis, proving it requires light to function.