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Setler [38]
3 years ago
7

What is the purpose of the seed coat in plants? A. It allows bryophytes to get water into their cells. B. It prevents the plant

embryo from getting nutrients. C. It surrounds and protects the plant embryo until conditions are right for growing. D. It turns gametophytes into sporophytes.
Biology
1 answer:
Semenov [28]3 years ago
5 0
The correct answer is letter C.
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HELP??? How is convection in the mantle different from convection in the ocean?
Murrr4er [49]

Answer:

Ocean currents result from two processes - the action of wind on the surface of the water, and from variation in water temperature that causes movement- a process known as convection.Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This subducted material sinks through the Earth's interior.

Explanation:

3 0
4 years ago
Over a period of time, the beetles once again reached carrying capacity and sustained it for many years. However, pollution from
Nookie1986 [14]

Answer:

As the beetles have a uniform distribution, at a carrying capacity of 14,600 beetles, there are about 128 beetles per hectare. Because 55 hectares are now unlivable, the carrying capacity would decrease by about 7,040 individuals (55 × 128).

Therefore, the carrying capacity of the ecosystem will be (old carrying capacity – decrease in carrying capacity) = (14,600 – 7,040) = 7,560 beetles.

Explanation:

answer from Plato

4 0
3 years ago
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The zebra fish mutation that reduced coloration created a null allele of the transport protein gene. Which of the following type
Svetach [21]

Answer:

Correct answer is D.

Explanation:

Silent mutations have no observable effect while neutral mutations does not cause harm or benefit the organism in any way. Missense mutations are single nucleotide changes that only affect one codon and one protein. In this case answer is frameshift mutation because this type of mutation is result of DNA insertion or deletion which changes the way DNA sequence is read and may affect more than one gene.

4 0
3 years ago
How might an amino acid change at a site distant from the active site of the enzyme alter the enzyme's substrate specificity?
Fynjy0 [20]

Answer:

Answer is C. By changing the shape of protein.

Explanation:

The site where the substrate binds and the chemical reaction take place is known as the active site.

Note that , if there is changes in the pH, it can affect the active site of the amino acid residue which usually have acidic or basic properties that is important for catalysis, thereby making it hard for substrate to bind.

6 0
3 years ago
What is spontaneous generation?
kkurt [141]

Answer:

Spontaneous generation, the hypothetical process by which living organisms develop from nonliving matter.

Explanation:

In 1668, Francesco Redi, an Italian scientist, designed a scientific experiment to test the spontaneous creation of maggots by placing fresh meat in each of two different jars. One jar was left open; the other was covered with a cloth. Days later, the open jar contained maggots, whereas the covered jar contained no maggots. He did note that maggots were found on the exterior surface of the cloth that covered the jar. Redi successfully demonstrated that the maggots came from fly eggs and thereby helped to disprove spontaneous generation.

4 0
3 years ago
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