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Ksenya-84 [330]
3 years ago
15

Root hairs are thin outgrowths from certain plant roots that enhance water and nutrient absorption from the soil. Which of the f

ollowing best describes how root hairs are specialized for this function?
A. Root hairs are specialized for the phagocytosis of nutrients and water in the soil.

B. Root hairs contain an increased number of vacuoles that store water for the plant.

C. Root hairs have an elongated shape that increases the surface area-to-volume ratio.

D. Root hairs have specialized membranes that have increased permeability to water and nutrients.
Biology
1 answer:
worty [1.4K]3 years ago
5 0

Answer: Option C) Root hairs have an elongated shape that increases the surface area-to-volume ratio.

Explanation:

The larger surface area-to-volume ratio of root hairs enables them to rapidly absorped water molecules and nutrients along their elongated shape while aiding their upward transport from the root up the shoot (through the xylem vessels).

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Assuming dragon genetics follows the same rules as fruit flies, what ratio of genotypes would you expect if the genes were not l
andrew11 [14]

Assuming dragon genetics follow the same rules as fruit flies, we would get the same possible genotype for all 16 offspring provided that the genes are not linked.

Considering dragon genetics, flame eyes (F) are dominant to blue eyes (f) and burbling (B) is dominant to whistling (b).

Now, a dihybrid cross between two homozygous blue-eyed, whistling dragons will yield 16 offspring all with the same possible genotype .i.e. homozygous blue-eyed, whistling type.

Morgan through experiments on fruit flies observed that when the two genes in a dihybrid cross were situated on the same chromosome, the proportion of parental gene combination were much higher than the non-parental type.

He attributed this due to the physical association or linkage of the two genes and coined the term 'linkage' to describe the physical association of genes on a chromosome. The term 'recombination' is to describe the generation of non-parental gene combination.

To learn more about dihybrid cross here

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2 years ago
Answers of properties of water
mezya [45]
Water (H
2O) is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound and is described as the "universal solvent" [17][18] and the "solvent of life".[19] It is the most abundant substance on Earth[20] and the only common substance to exist as a solid, liquid, and gas on Earth's surface.[21] It is also the third most abundant molecule in the universe.[20]
5 0
3 years ago
What is the pristine seas project?
iogann1982 [59]

Answer:

Image result for What is the pristine seas project?

Founded and led by National Geographic Explorer-in-Residence Dr. Enric Sala, Pristine Seas is an exploration, research, and media project aimed at supporting the United Nations' target of 10 percent of the ocean protected by 2020. ... Since its inception, Pristine Seas has carried out expeditions in 23 places.

Explanation:

8 0
3 years ago
Which of the following best describes a response in which the roots show a positive tropic response and the shoots show a negati
Pachacha [2.7K]

Answer: 3. gravitropism

The movement of plants in response to stimuli is called as tropism. Plants respond to different stimuli like light (phototropism), water present in the soil (hydrotropism), gravity (gravitropism) and touch (thigmotropism).

Gravitropism refers the growth and movement of plant parts with respect to the force of gravity exerted by earth. The roots shows positive gravitational tropism because they are growing towards earth gravity. The shoots or stems shows negative gravitational tropism because they are moving or growing against the gravity.

8 0
3 years ago
A school bus transporting students to school is an example of
melamori03 [73]

Answer:

2.kinetic energy because it has the ability to take the students to school.

Explanation:

Energy of a given system due to the virtue of the motion of the given system is known as kinetic energy of the system

now we know that

so kinetic energy depends upon mass of the system and the velocity of the system.

So here since bus is in motion and moving towards the school so the bus along with all the children must have kinetic energy in it

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2.kinetic energy because it has the ability to take the students to school.

6 0
3 years ago
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