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Reil [10]
3 years ago
13

Reliability refers to the ability of a test to produce consistent results each time it is administered

Biology
1 answer:
Rasek [7]3 years ago
6 0

Answer: a. True

Explanation:

Reliability can be define as the consistency in the results or measure. A test is said to be reliable if the results obtained are repeated the same. For example,  if a test is designed to observe and measure the trait, then each time the test is administered to the subjects, the results obtain will be approximately the same.

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Question 15 (1 point) Which of the following demonstrates positive phototropism? bean plants twisting around a bean pole 12 a ho
Pavlova-9 [17]

Given what we know, we can confirm that among the options listed, the more appropriate example of positive phototropism is the <u><em>houseplant </em></u><u><em>growing towards the </em></u><u><em>window</em></u><u><em>. </em></u>

<h3>What is positive phototropism?</h3>
  • This is a photosensitive reaction that occurs in plants.
  • Positive phototropism is described as the growth of plants towards the source of light.
  • While negative phototropism is when the plants lean away from the light.
  • Sunflowers and bananas, which lean towards the sun as they grow, are prime examples of positive phototropism.

Therefore, given the definition of positive phototropism as the growth of an organism towards a source of light, we can confirm that the option stating that the <u><em>houseplant </em></u><u><em>grows towards the window</em></u> is the best example of this concept, given that the window is the source of light for the plant.

To learn more about phototropism visit:

brainly.com/question/16915126?referrer=searchResults

7 0
2 years ago
Match the items on the left with the best corresponding statement on the right. 1. contains tightly packaged DNA molecules R.C.
Brrunno [24]

Answer:

1. Chromosomes

2.Carl Correns

3. Mutation

4. Mitosis

5. Gregor Mendel

6. DNA

7.R.C. Punnett

8. Incomplete dominance

9. Meiosis

Explanation:

1. Chromosomes are described as thread-like structures. They are called DNA molecules because they are made up of DNA that are coiled up tightly. They are found in the nucleus of the cell.

2. Carl Correns was a botanist and geneticist who worked with flowers called four o'clocks. With the flowers he discovered different patterns of heredity, or non-mendelian heredity. He conducted this experiment to determine up to what extent do the Mendelian inheritance patterns  remain valid.

3. Mutation is a change in in DNA. Since DNA controls how an organism develops ( in terms of appearance, structure, and behavior), a change in DNA would change many of those characteristics. Mutations can be good and bad, but it is essential to evolution and genetic diversity.

4. Mitosis is a type of cell division where the daughter  cells get the same number of chromosomes as the parent. In other words, they are the exact copy of the parent cells. This occurs in body cells.

5. Gregor Mendel is known as the father of genetics for his laws of inheritance. His work on pea plants, he established the laws of heredity; Law of segregation; Law of Independent Assortment; and Law of Dominance.

6. DNA is short for Deoxyribonucleic Acid. It is a molecule that carries all the genetic information of an organism. It stores this information in the form of a code using 4 bases; Guanine, Adenine, Cytosine, and Thymine.

7. Reginald Crundall Punnett was a geneticist who linked statistics and mendellian genetics to come up with the Punnett Square. The Punnett Square is used to determine the probability of genotypes of offsprings, given the genotypes of the parents.

8. Incomplete dominance is a non-mendellian inheritance where instead of the dominant trait masking the recessive trait, the traits blend together. You can see this with some plants where when a white flower is crossed with a red flower, it results in pink flowers.

9. Meiosis is a type of cell division that occur in sex cells. The resulting daughter cells only have half the original number of chromosomes as the parent cells. The daughter cells only have half of the parent cells because unlike in mitosis, the cell divides twice.

3 0
3 years ago
Read 2 more answers
Which of the following types of specialized cells are only found in plants? A:Phloem B:Glandular C: Muscle D: Nerve
iris [78.8K]

Answer:

pretty sure its d im so sorry if im wrong I greatly apologize

7 0
3 years ago
“How fast do hummingbirds fly?” Why is the question a scientific question?
sleet_krkn [62]
Hummingbirds can fly as fast as 60 miles per hour. One reason why its a scientific question is because of their speed. Their speed is very different compared to many other animals. I hope this helps :)
6 0
3 years ago
Read 2 more answers
Rosalind Franklin used x-ray diffraction to record how x-rays scatter when bounced off the surface of DNA molecules.
Lady bird [3.3K]

Answer:

e) All of the answers are correct

Explanation:

The first X-ray picture of DNA taken in 1952 by Rosalind Franklin using the  X-ray crystallography technique revealed the helical shape of DNA. Based on this discovery, it was discovered later on that the DNA molecule was made of two chains of nucleotides and at high humidity i.e when exposed to water it becomes long and thin.

7 0
3 years ago
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