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ycow [4]
3 years ago
12

23. What biological term is best used to explain the color of leaves changing with the decreased in ambient UV light as seasons

change? a. Photo-periodism c. Growth hibernation b. Evanescence d. Photo-liberation
Biology
1 answer:
GarryVolchara [31]3 years ago
5 0

Answer: a. Photo-periodism

Explanation:

The relative length of the day is considered as a major factor in the development of plants, particularly in sexual reproduction. The plants were grouped considering that the flowering and fruiting occurs only when the length of the day is within certain limits so that these phases are achieved only in certain times of the year. Therefore, some species respond to long days, while others respond to short days, and still, others are capable of responding to all day lengths. The name and meaning of each group became as follows:

Short Day Plants: They are the species that bloom in smaller photoperiods than a critical maximum.

Long day plants. These are the species that bloom in larger photoperiods than a critical minimum.

Neutral day plants: They are those that bloom in a wide range of the photoperiod.

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Freud is to ________ as rogers is to ________.
Vaselesa [24]
Freud is to free association, while on the other hand, Rogers is to active listening. These are great people who modeled the foundation of psychology as what we understood right now. Sigmund Freud is the founder of psychoanalysis while Rogers is the founder of the humanistic approach to psychology.
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Darwin studied actual birds on the Galapagos Islands instead of using a simulation, as you did in this lab. Studying natural sel
Elza [17]
Darwin lived in a time where natural selection was a strange theory among scientists and researchers. This was especially true when other researcher Lamarck argued that organisms passed on helpful traits to their offspring, that they magically could form a new trait to adapt to their environment and then pass it onto their offspring. For example, if a giraffe was too short to reach food, it would grow a larger neck in its lifetime and then pass that trait onto its offspring. Darwin argued that, through the process of survival of the fittest, that short giraffe would die off and never receive the chance to pass on its shortness to future populations. Thus, taller giraffes would survive— they can reach food, shorter giraffes can’t— and the short genes would disappear. The fact that Darwin was introducing a new theory that nobody was used to at the time was peculiar, so he had few people on his side until long after his observations.
Another problem Darwin had was the lack of technology. To travel, Darwin would have to use boats to reach far away places, and of course, this took time.
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Hope this helped a little!
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3 years ago
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Please answer. I’ll give thanks to those who try and brainlyist to the one who gets the right answer
Nimfa-mama [501]

Answer:

Explanation:

B

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Compare lactic fermentation and alcoholic fermentation by describing what pyruvic acid is changed in to. Be sure to include what
dangina [55]
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4 0
3 years ago
There is a healthy bacterial culture growing in the exponential phase . A technician wants to make a growth curve by making cell
emmainna [20.7K]

A) WHAT IS THE PROBLEM WITH HER PLAN?

Binary fission is one of the asexual process by which most bacteria reproduce, the binary fission brings about a doubling of the number in bacterial cells that are viable.

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Take for instance,a fast growing bacterium that is under an ideal culture conditions has a doubling time of 20minutes and for the bacteria that is grown in a condition that is not so ideal,may have a doubling time of hours.

The major challenge/ problem with her plan is that as she takes the bacterial sample every 30minutes, and then hold the sample till the last sampling is done in the day,those bacterial cells that are collected in the initial intervals will then get divided and further gives a result that is false.

However,if those bacteria that are collected aren't stored in a culture environment that is standard,the bacterial cells may die off and thus will further bring about a false result.

2) CAN SHE DO ANYTHING TO IMPROVE THE ACCURACY OF HER RESULT?

Solution for rectifying the error in her plan;

She can go ahead and add 50-100 μl of formaldehyde to all the culture suspensions that she has and has taken every 30minutes.

As the formaldehyde will fix the bacterial cells,The optical density present in all those aliquots can then be retrieved/taken at the end of the day.

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5 0
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