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Sergeeva-Olga [200]
3 years ago
4

Albert hypothesizes that a certain fungus causes black spot disease in roses. Which of the following experimental designs would

support or reject his hypothesis?
A.
1. Pot ten different species of flower plants, including at least one rose bush.
2. Isolate the flowers from each other.
3. Introduce the fungus into the soil of nine of the flowers.
4. Observe which, if any, flowers develop black spot disease.
B.
1. Pot ten rose bushes of the same breed.
2. Isolate the rose bushes from each other.
3. Introduce the fungus into the soil of nine of the rose bushes.
4. Observe which, if any, rose bushes develop black spot disease.
C.
Pot ten rose bushes of the same breed.
Isolate the rose bushes from each other.
Introduce the fungus into the soil of all the rose bushes.
Observe which, if any, rose bushes develop black spot disease.
D.
1. Plant a flower garden.
2. Water the garden deeply.
3. Introduce the fungus into the soil of the flower garden.
4. Observe which, if any, plants develop black spot disease.
Biology
2 answers:
IgorC [24]3 years ago
4 0

Answer:

a

Explanation:

because i did the study island

svetoff [14.1K]3 years ago
3 0

Answer:

Place a beaker on a balance and measure the mass !

Explanation:

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Answer:

Scientists use triangulation to find the epicenter of an earthquake. When seismic data is collected from at least three different locations, it can be used to determine the epicenter by where it intersects. Every earthquake is recorded on numerous seismographs located in different directions.

Explanation:

6 0
3 years ago
Amoebas, paramecia, and euglenas can all reproduce by fission. <br> a. True<br> b. False
Sever21 [200]
The answer is True.

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4 0
4 years ago
In pea plants, the allele for round seeds is dominant to the allele for wrinkled seeds. If a plant that is heterozygous for seed
Harman [31]

Answer:

50%

Explanation:

According to this question involving a gene coding for seed shape in pea plant, the allele for round seeds (R) is dominant to the allele for wrinkled seeds (r). This means that a heterozygous pea plant (Rr) will have a round seed shape.

If a plant that is heterozygous for seed type (Rr) is crossed with one that has only homzygous wrinkled seeds (rr), the following gametes will be produced by each parent plant:

Rr - R and r

rr - r and r

Using these gametes in a punnet square (see attached image), the following proportions of offsprings will be produced:

Rr, Rr, rr and rr

Rr = round seed offsprings

rr = wrinkled seed offsprings

Since 1 out of 2 offsprings has wrinkled seeds, 1/2 × 100 = 50% is the percentage of offsprings expected to have wrinkled seeds.

5 0
4 years ago
A(n) _____ in a molecule influences the way that a molecule reacts.
vitfil [10]

The correct answer is option B, that is, functional group.  

A functional group refers to a part of a molecule, which is a classified/recognizable group of bound atoms. The functional group provides the molecule with its characteristics, in spite of what molecule comprises it, they are the centers of chemical reactivity. The functional groups in a molecule require to be determined when naming.  


3 0
3 years ago
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nikdorinn [45]
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Answer: B).
3 0
4 years ago
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