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kotegsom [21]
1 year ago
5

______________________ spiral movement of growing plants, especially the main stem. group of answer choices twining nodding cont

raction mutations
Biology
1 answer:
AveGali [126]1 year ago
3 0

Nutation is the bending movement of growing plants, especially the main stem. Thus, option D is correct.

<h3>What is nutation?</h3>

Nutation is defined as bending movements of stems, leaves, roots and other plant organs due to difference in growth in different parts of plant organ.

Nutation is also known as circumnutation and it is a particular class of nastic movements during which organ of plants bends in different directions, resulting in swinging motion.

Plant such as monocotyledons and dicotyledons shows plant nutation.

Nutation is the that takes place when force is absorbed at core and other parts in the direction of gravitational forces.

Therefore, nutation is the spiral movement of growing plants, especially the main stem.Thus, option A is correct.

Learn more about nutation here:

brainly.com/question/2180770

#SPJ4

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A decrease in the resting membrane potential is __________ whereas, __________ is an increase in the membrane potential.
nexus9112 [7]

Answer: depolarization; hyperpolarization

Explanation:

At resting potential (absence of stimulus), the cell membrane of a neuron is said to be polarized with a net negative charge within due to more potassium (K+) ions present than sodium (Na+) ions.

However, an impressed stimuli reverses the ions content as K+ ions flows out and quickly replaced by Na+ ions, resulting in a decrease in membrane potential and a more positive cell membrane. Thus, depolarization occurs.

An increase in the membrane potential (so that it becomes more negative) is called hyperpolarization.

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3 years ago
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(Hurry, l am taking my exam) In an effort to develop the best-tasting apple, a grower eliminated all trees that produced apples
Vinil7 [7]

Answer: It is <u>D. Stabalizing</u>

Explanation:

I took the test and because the apples of both ends are being eliminated while the ones in the middle are being kept and increasing.

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14. In Persian cats, the allele for white hair color (A) is dominant over the allele for silver hair
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3 years ago
Which rocks cool the slowest.
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8 0
3 years ago
A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur
mote1985 [20]

<u>Answer:</u> The weight of the person above the surface of a planet is 635.83N.

<u>Explanation:</u>

To calculate the weight of a person, we use the formula:

w=mg     ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

g=\frac{GM}{r^2}

where, g = acceleration due to gravity = ?m/s^2

G = Universal gravitational constant = 6.67\times 10^{-11}Nm^2/kg^2

M = mass of the planet = 5.97\times 10^{24}kg

r = distance of the person from the planet = 6.38\times 10^6m

Putting values in above equation, we get:

g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2

Putting this value in equation 1, we get:

w=65kg\times 9.782m/s^2=635.83N

Hence, the weight of the person above the surface of a planet is 635.83N.

7 0
3 years ago
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