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ivanzaharov [21]
2 years ago
7

Name three adaptations that helped plants survive on land, and describe how each of them helped.

Biology
1 answer:
vlabodo [156]2 years ago
3 0

Answer:

Plants have evolved several adaptations to life on land, including embryo retention, stomata, and vascular tissue

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Dna sequences in bacteria that on rare occasions moved from one place in the genome to another are called ________.
Genrish500 [490]
<span>MOBILE GENETIC ELEMENTS</span>
6 0
3 years ago
What is altitude <br>in triangle ​
Mrac [35]

Answer:

The altitude of a triangle is the perpendicular line segment drawn from the vertex to the opposite side of the triangle. It may lie inside or outside the triangle, based on the types of triangles

Explanation:

for example look at the given picture

5 0
2 years ago
Osmosis and tonicity
Sergio039 [100]

The blood cells likely placed in a "hypotonic solution".

<u>Option: A</u>

<u>Explanation:</u>

When human blood cells are immersed in a solution with a low concentration of solute than is present in cells, osmosis allows water to pass through the cells, allowing the cells to get swollen; such a fluid is hypotonic to the cells. But when held in a solution with a greater concentration of solute, osmosis allows water to pass out of the cell, the cell is smaller and crenated in form; then a solution is hypertonic to the cells.

Healthcare facilities preserve human blood cells in a plasma solution that has the proper salt and protein ratios. Such solution is formulated to be mildly hypertonic to the red cells, thus maintaining the integrity of the cells and avoiding hemolysis.

8 0
3 years ago
Centrosome is the region of chromosome where two sister chromatids are connected.
Zinaida [17]

False, that is a close answer and can be easily confused with the right answer which is "Centromere" it is the specialized region of the chromosome where two sister chromatids are most closely attached.

The centrosome is like the organization center in the process of cell division. Has two centrioles.

8 0
3 years ago
100 individuals whose genetic makeup is composed of 20% recessive alleles join an established population. The established popula
NeX [460]

Answer:

population = 600

heterozygotes = 2pq

The homozygous recessive percentage = q^{2}

q = 0.1

Solve for q:

∴ q = \sqrt{q}

∴ q = \sqrt{0.10}

∴ q = 0.316

solve for p:

for p + q = 1,

thus p = 1 – q = 1 – 0.316 = 0.684  

The heterozygotes = 2pq

2pq =  2 x 0.316 x 0.684 = 0.432

600 x 0.432 = 259.2  = 259

so,  the population reaches Hardy Weinberg equilibrium, 259 of indviduals should be heterozygous for this trait.

Hence, the correct answer is 259 .

4 0
3 years ago
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