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3 years ago

Plants maintain homeostasis by _____.

Biology

2 answers:

Sloan [31]3 years ago

7 0

All of the above. Hope this helps.

storchak [24]3 years ago

3 0

Answer:

all of the above

Explanation:

Homeostasis, a term coined by Walter Cannon, can be defined as the ability to maintain the internal environment in an almost constant equilibrium, regardless of changes occurring in the external environment. The internal environment, in turn, is defined as the fluids that circulate through cells, the so-called interstitial fluid. To maintain homeostasis, the internal environment must keep certain values unchanged. This is achieved thanks to a number of coordinated physiological processes that ensure balance.

In plants the physiological processes responsible for this balance are:

opening and closing stomata
converting excess sugar molecules to a lesser number of starch molecules
excreting waste through the cell membrane

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During which stage is sunlight absorbed and water broken down to produce oxygen and atp

Marianna [84]

Explanation:

no 3 is the correct answer I think...

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3 years ago

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Which of the following is true about scientific theories?

melamori03 [73]

Answer:

Explanation:

It certainly isn't the last one. A theory is close to a guess. It fits all the known facts, but there is usually something missing. If someone figures out what is missing, usually by experiment, then the theory become a fact.

The rest of them (1 2 an 3) can all be true. 3 is the least viable. You have to be able to come up with a counter example to reject a theory.

I'm not sure about 2. New phenomena can still be part of current theories. Reluctantly, I wouldn't choose 2 because

1 is the best answer of a very poor lot. Do not be surprised if you use it, that it turns out to be wrong.

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3 years ago

Which of the following happens in the G1 Phase of the Cell Cycle?

IgorC [24]

Answer:

DNA REPLICATES

Explanation:

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3 years ago

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A hypothetical organ has the following functional requirements: (1) the ability to resist surface abrasion and mechanical stress

alukav5142 [94]

Answer:

The <u>five</u> tissues needed that could make up this hypothetical organ are stratified squamous epithelial tissue, smooth muscle tissue, dense irregular connective tissue, loose connective tissue, and nervous tissue.

Explanation:

<h3 /><h3>Ability to resist surface abrasion and mechanical stresses</h3>

Stratified squamous epithelial tissue

This consists of <em>scale-like cells</em> stacked together in layers that provide a <u>barrier that is resistant to abrasions and wear-and-tear</u>. This is also the most common type of stratified epithelium in the body. The top layer of this tissue has two types: <u>keratinized</u>, lined with dead cells with keratin, and <u>non-keratinized</u>, also with dead cells but without the keratin. In the human body, the skin is composed of stratified squamous epithelium.

<h3>Ability to contract involuntarily when stimulated by cells of the nervous system</h3>

Smooth muscle tissue

Smooth muscle, known for its <em>non-striated appearance,</em> is a kind of <u>involuntary</u> muscle cells that are <u>stimulated by neural signals by the autonomic nervous system, hormones, and local factors</u> such as a wall stretch of a certain organ, inflammation of visceral/parietal organs, etc. In the human body, this is mostly found in the <u>walls of blood vessels and organ systems.</u>

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<h3>Ability to resist tension in many different planes of force</h3>

Dense irregular connective tissue

This is a kind of connective tissue made up of <u>collagen fibers arranged randomly.</u> This creates <u>greater strength and support in all directions</u>. It can also <u>return to its original shape</u> even after stretching.

<h3>One tissue to "glue" all other tissues together</h3>

Loose connective tissue

Also known as areolar tissue, it is loosely made up of collagen, elastin, and reticular fibers, and lots of ground substance. It is arranged in a web-like fashion and serves as the "cement" which fills in spaces between tissues.

<h3>One tissue to stimulate the contracting cells</h3>

Nerve tissue

It is a specialized kind of tissue responsible for communication within the body. It transmits and receives signal impulses throughout the body. The 2 types of nervous tissues are neurons and neuroglia.

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4 years ago

Repeating tests usually leads to more independent variables. more accurate measurement. more confidence in the results. more con

Over [174]

More confident in the results

the others options could be valid but there is the need for more information to conclude in another hand, more confident in results is the most general case, if the repeating test brings back the same results.

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3 years ago