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Zina [86]
2 years ago
5

Do you think true water-conducting tissue is a derived character of either embryophytes or green algae? Why or why not?

Biology
1 answer:
ludmilkaskok [199]2 years ago
8 0

Answer:

i think true water-conducting tissue is a derived character of green algae?

Explanation:

WHY?

Many characteristics of land plants also appear in algae like both are multi cellular, euks, photosynthetic autotrophs so are brown, red, and certain green algae, plants have cell walls made of cellulose and so do green algae

However, charophytes are the only present day algae that share these traits with land plants

1.Rings of cellulose-synthesizing proteins (circular rings of proteins in plasma membrane that make cellulose of cell wall)

2.Structure of flagellated sperm

3.Formation of a phragmoplast ( group of microtubules known as phragmoplast formes b/t daughter nuclei of a dividing cell, giving rise to a cell plate making cross wall that separates the daughter cells)

Comparisons of both nuclear and chloroplast genes point to charophytes as the closest living relatives of land plants

Land plants are not descended from modern charophytes, but share a common ancestor with modern charophytes

WHY NOT?

The origin of embryophytes, as these multicellular plants arose and conquered the land, was a pivotal event in the history of life on earth. Without embryophytes, there would be no animals or humans surviving on the land portion of our planet. The provide food, habitat, energy, oxygen, protection, and numerous vital other functions for the world's creatures. Human beings also benefit from the aesthetic beauty, medicines, and innumerable products derived from these diverse plants.

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This question has a two part answer. The first part is that an asteroid hitting the earth and the second part is massive volcanoes erupting around the world.

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Which factor is least likely to affect the results and interpretation of a functional MRI?
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2 years ago
Suppose the size of a population of marmots is 300. According to genetic drift theory, what is the probability that a newly aris
arsen [322]

Answer:

E. 1/600

Explanation:

Hint:

The probability of fixation of a new neutral mutation is 1/(2N)

Given N as 300

= 1/(2×300)

=1/600

Therefore,

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2 years ago
4. The reason that organisms cannot produce populations of unlimited size is that
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Last week you were wondering what Jessica and Tom's babies might look like with respect to their eyebrows and earlobes (both Tom
mash [69]

Answer:

25%

Explanation:

The possible genotypes and phenotypes are:

  • EE or Ee: thick eyebrows
  • ee: thin eyebrows
  • FF or Ff: free earlobes
  • ff: attached earlobes

Tom and Jessica have thick eyebrows and free earlobes. Tom's mother has attached earlobes, so Tom must have inherited an <em>f</em> allele from her, and because he has free earlobes he must be heterozygous<em> Ff. </em>We assume Jessica is homozygous for free earlobes <em>FF</em>.

Tom's mother and Jessica's father have thin eyebrows, so they are both <em>ee</em> and therefore both Tom and Jessica must be heterozygous <em>Ee</em>.

From the above information, Tom has the genotype EeFf and Jessica is EeFF. If you do a Punnett Square of this cross, you'll get that the probability of having a child with free earlobes and thin eyebrows (eeF_) is 25%.

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2 years ago
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