Plant tissue culture is a method of asexual reproduction used to produce clones of a plant with desirable traits. Plant tissue culture relies on the fact that plant cells have the ability to regenerate a whole plant. Single cells are dosed with certain chemicals that trigger dividing cells to produce roots, shoots, and leaves. Which tenet of cell theory BEST serves as a basis for this type of biotechnology?

Answers

Answer 1

Answer: The answer is Cells come only from pre-existing cells.

There are three tenets of cell theory:
1. All living organisms are composed of one or more cells.
2. Cells are the basic structural and functional units in all living organisms.
3. Cells come only from pre-existing cells.

In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.

Answer 2

Answer:

Answer:

The answer is Cells come only from pre-existing cells.

There are three tenets of cell theory:

1. All living organisms are composed of one or more cells.

2. Cells are the basic structural and functional units in all living organisms.

3. Cells come only from pre-existing cells.

In plants tissue cultures, single cells divide to produce roots, shoots, and leaves. This division suggests there must be some pre-existing cells from which those organs will be produced. So, the tenet that cells come from other cells in cell division is a basis for plant tissue cultures.

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Explanation:

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Nearly all plants can be reproduced asexually.a. Trueb. False A _____ is a stem growing from a plant that produces roots, stems, and leaves at various points. A common example is the strawberry plant.stolonstomatarhizomemitospore

In asexual reproduction, ________.a. the offspring are genetically unique
b. the offspring are made up of portions of each of the parent's dna
c. the offspring are genetically related but also genetically distinct
d. the offspring have identical dna

Answers

In asexual reproduction, d. the offspring have identical DNA.

Asexual reproduction involves the process of mitosis for cell division. In the process of mitosis, the DNA duplicates and separates into two different cells. The duplicated DNA is genetically identical to the DNA of the mother or parent cell. This type of reproduction is faster than the reproductive method.

Final answer:

Asexual reproduction involves one parent and results in offspring that are essentially clones of the parent, meaning they have identical DNA. It involves methods like binary fission, budding, and vegetative reproduction.

Explanation:

In asexual reproduction, the most fitting answer from your listed options would be: that the offspring have identical DNA. This type of reproduction involves one parent and the offspring produced are, for all intents and purposes, clones of the parent because they have identical genetic information. Asexual reproduction methods can include processes such as binary fission, budding, and vegetative reproduction.

Learn more about Asexual Reproduction

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Marine Science Multiple Choice Help Please!!!

Answers

Ok im going by my knowledge of what i know

6. D, The water is warmer in the summer

7. A. Counter Clockwise

8. High winds, Tornado's, Coastal Flooding, Rip tides.

9. Low Pressure, and Calm Winds,

This is all i know and hope it helps :)

high winds
tornadeos
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When hearing is evaluated, which cranial nerve is being tested? a.III b.IV c.VIII d.XII

Answers

Answer:

C. VIII

Explanation:

This cranial nerve is also known as the vestibulocochlear nerve. It is responsible for hearing and balance, so when hearing is evaluated, this cranial nerve is being tested.

What prevents antibiotics from being effective against viruses?A. Viruses have a high rate of mutation.
B. Viruses have no RNA.
C. Viruses have no metabolism.
D. Viruses have a protein shell that protects them.

Answers

C) Viruses that have no metabolism prevents antibiotics from being effective against viruses.

The correct answer is C. Viruses have no metabolism

The table below shows some characteristics of three different types of muscles.Characteristics of Different Types of Muscles
Type A Muscles Type B Muscles Type C Muscles
Striations Yes Yes No
Found in digestive and urinary system No No Yes
Found in musculoskeletal system Yes No No

Which type of muscle is Type B? Cite the evidence from the chart to support your answer.
A Type B are skeletal muscles, because only skeletal muscles have striations.
B Type B are cardiac muscles, because they are not found in any other part of the body.
C Type B are skeletal muscles, because they are not part of the digestive system.
D Type B are cardiac muscles, because they do not tire easily.

Answers

Answer:

Option C

Hope it helps!!

On a small island, three separate phenotypes of a single species of cherry tree occur- small, medium, and large seeds. A small population of mice is introduced to the island, The mice are the only organisms that eat cherries on the island. When they eat a cherry, they digest it and excrete the pit or seed completely undigested at another location. The mice choose the larger cherries with medium and large seeds and leave the smallest ones uneaten. a. What type of selection, if any, is occurring here? b. Provide support for your answer. c. Graph what the population of cherry trees will look like over time. Make sure to label your axes.

Answers

a. Natural selection is occurring in this scenario.
b. The larger cherries with medium and large seeds are being selectively favored by the mice, as they are the ones being eaten and dispersed to new locations. This leads to an increase in the frequency of the medium and large seed phenotypes in the population over time.
c. Unfortunately, as a text-based AI, I am unable to create visual graphs. However, over time, the population of cherry trees would likely show an increase in the medium and large seed phenotypes, while the small seed phenotype would decrease in frequency. The x-axis could represent time, and the y-axis could represent the proportion or frequency of each seed phenotype in the population.

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1. Before the introduction of the yellow crazy ant to Christmas Island, land crabs ate many plant seedlings in the forest, maintaining a relatively clear forest floor. As the crab population has declined, plant seedlings have flourished. The forest floor is now covered with plants. Choose the statement that best describes what is occurring on the forest floor. A. Primary succession is occurring because the ant is a new species changing the ecosystem. B. Secondary succession is occurring because the organisms on the forest floor are changing. C. Climax vegetation is occurring because the seedlings finally have the chance to grow. D. Primary succession is occurring because more plant life is healthier for the ecosystem.

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