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AysviL [449]
3 years ago
9

A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experim

ent as follows over a 2-month period, all with illumination at 1 meter distance from plants grown with the same soil and watering conditions. ollapse 3 Arabidopsis plants exposed to ultraviolet light (UV) 3 Arabidopsis plants exposed to infrared light (IR) 3 Arabidopsis plants exposed to white light At the end of the experiment, she finds that the IR treated plants are scorched, the UV treated plants have wilted, but the white light-treated plants are growing normally.
Which of the following statements is most likely to be correct?
A) Three plants do not provide sufficient replications to draw a conclusion
B) Wavelength of light is the only variable that has been changed between groups.
C) The wavelength of light does not affect photosynthesis.
D) Infrared light contains more energy than the other wavelengths.
Biology
1 answer:
Helen [10]3 years ago
8 0

Answer:

The correct answer is : B) Wavelength of light is the only variable that has been changed between groups.

Explanation:

In this three plants in three different conditions shows three different outcomes so their is sufficient replication to draw a conclusion. The wavelength of the light affects the growth of the plant. UV light has very low wavelengths below 400 nm than the photons required similarly Infrared light has higher wavelengths that is low energy light, UV can cause wilting and leaf burn.

So, the wavelengths of the light and growth of plant are related and this experiment only wavelengths of the lights are changed.

Thus, the correct answer is :  B) Wavelength of light is the only variable that has been changed between groups.

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riadik2000 [5.3K]

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5 0
3 years ago
What is a spore that develops by mitosis.
o-na [289]

Answer:

<em>The correct option is A. mitospore</em>

Explanation:

A mitospore can be described as a haploid or diploid spore. Generally, a spore is formed by meiosis but under certain conditions it can form by the process of mitosis and is known as mitospore.

When spores are formed by sexual methods, meiosis occurs. When they are formed by asexual methods, mitosis occurs. Asexually, there are different ways by which mitospores form by mitosis.

7 0
3 years ago
Tay-Sachs, which is a recessive lethal disease, results only when individuals possess two copies of the disease-causing allele.
VashaNatasha [74]

Answer:

a. Heterozygous individuals may pass on their copy of the disease-causing allele to offspring.

Explanation:

Tay-Sachs, which is a recessive lethal disease  ---- Let say the recessive lethal diseases is s

∴ it only results when an individual posses two copies of the diseases-causing allele i.e two copies of the disease will be ss.

Now, when two hetrozygous individuals crossed , it is obvious that each can pass on their copy of the disease-causing allele to the offspring.

Let show an illustration for the above statement.

Let the heterozygous individual be Ts, if Ts cross with another Ts;

we will have:

Ts × Ts

         T          s

T        TT        Ts

s        Ts          ss

the offspring are TT,Ts,Ts,ss

We can now see how the Heterozygous individuals pass on their copy of the disease-causing allele to the offspring (Ts).

8 0
3 years ago
You can recognize the process of pinocytosis when _____.
Lena [83]
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6 0
3 years ago
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natta225 [31]
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Humus consists of decomposing organic material. The process of creating humus is called Humification: decomposition of o<span>rganic matter into smaller and smaller molecules by the micro-organisms in the soil (mostly bacteria and fungi).</span>
3 0
3 years ago
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