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Lynna [10]
3 years ago
10

Commercial plant growers artificially control the lengths of days and nights. This produces a response called

Biology
2 answers:
Olenka [21]3 years ago
6 0

the answer is A. Photoperiodism

Hope this helps!

leonid [27]3 years ago
5 0
The answer is A. photoperiodism.

Photoperiodism is an organism reaction to the lengths of days and nights. Some plants require longer days, and some require shorter days. By changing the lengths of days and nights, commercial plant growers are able to increase plants productivity.

Tropism is plant growth in a response to a stimulus.
As it name suggests, <em>photo</em>tropism is plant growth in a response to light. 
<em>Gravi</em>tropism is plant growth in a response to gravity.
Thigmotropism is plant growth in a response to contact
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which type of contraction allows a muscle to produce tension without changing the angle of a skeletal joint
JulsSmile [24]

Answer:

isometric contraction

Explanation:

An isometric contraction occurs as the muscle produces tension without changing the angle of a skeletal joint. Isometric contractions involve sarcomere shortening and increasing muscle tension, but do not move a load, as the force produced cannot overcome the resistance provided by the load.

8 0
3 years ago
On average, those with the short form of the ____ transporter gene and a history of stressful experiences reported more than ave
astraxan [27]

Answer:

serotonin

Explanation:

Here is the complete question:. on average, those with the short form of the ________ transporter gene and a history of stressful experiences reported more than average symptoms of depression.

Serotonin is sometimes called the happy chemical, because it contributes to wellbeing and happiness. The scientific name for serotonin is 5-hydroxytryptamine, or 5-HT.

6 0
4 years ago
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Veins have a much lower blood pressure than arteries. Which of these prevents backflow of blood in veins? A. pressure applied by
Harlamova29_29 [7]

the answer is one–way valves in veins

7 0
3 years ago
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Which term is NOT spelled correctly?
Pavlova-9 [17]

It's 3,

intraocular is spelt with one c, not two

4 0
3 years ago
If adenine didn’t always pair with thymine and guanine didn’t always pair with cytosine, the new DNA ladders wouldn’t always be
zloy xaker [14]

Answer:

they wouldnt be identical because for example Guanine could be paired with thymine in the original DNA strand but could decide to pair with adenine in the replication DNA. that would make a different type of DNA.

Explanation:

DNA replication is a beautiful process. In DNA replication adenine only pairs with thymine and guanine only pairs with cytosine. this ensures that a replication of the DNA will be the same type of DNA.

Replication works like this. Helicase splits open the DNA and each side is copied by DNA polymerase. If let's say the nucleotide bases for side 1 are ATGCGA then the DNA polymerase will pair these with the matching bases TACGCT which will make the same DNA but if each base could pair with any base they want that could create a few different variations of the original DNA. ATGCGA could very well be paired with TCGACA or CGACTA which would created two different types of DNA.

3 0
3 years ago
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