Plant shoots exhibit positive phototropism by growing towards the light, while their roots exhibit negative phototropism by growing away from light. The hormone auxin directs this process. Auxin increases in concentration on the side of the shoots and the roots that faces away from the light. Auxin has different effects in each of these locations.


What is the best explanation of how auxin directs phototropism in plant shoots?

Answers

Answer 1

Answer:

Auxin increases in concentration on the side of the shoots and the roots that faces away from the light.

Explanation:

Auxin is a growth hormone in plants.it is promotes elongation of roots  and shoots. It is very sensitive to light. when the plant is exposed to light, the auxin in the  exposed part  of  the shoots breaks down. And diffuses to the shady part not exposed to light..

The higher concentration of auxin at this parts, promotes accelerated growth, which  caused the part to bend to of this shoot to grow faster than the other part, and bends towards light.

While the roots grows towards.


Related Questions

What is weather?
A. What’s happening in space at a time and place
B. What’s happening in our atmosphere at a time and place
C. The average weather over many years
D. The average temperature over many years

Answers

Answer:

The answer would be B.

Explanation:

The answer is B. It has to be in our atmosphere, and cannot be over a large span of time.

A -Weight of water collapses lime stone below it, water drains into the sinkhole
B-pollution due to factories, water evaporates quickly
C-High atmosphere temperature, water evaporates quickly
D-natural absorption of water by the land, water drains into the Aquifer

Answers

A-Weight of water collapses lime stone below it, water drains into the sinkhole

Please Help!!!!! Emergency!!!
Which of the following organisms live in the desert biome? (Select all that apply)
a. foxes
b. camels
c. desert hares
d. birds
e. reptiles
f. beavers
g. cactii
h. deer
i. small trees

Answers

Answer:

a. foxes

b. camels

c. desert hares

d. birds

e. reptiles

g. cacti

i. small trees

Explanation:

Hope this helps! May I get brainliest? -w-

Answer:

camels, desert hares, birds, reptiles, cacti, small trees(maybe) foxes if you count fennec foxes

Explanation:

fennec foxes live in the desert

camels are the image of a desert

desert hares have desert in the name

birds:road runners

reptiles: rattlesnakes

beavers: need rivers!

cacti: in the mage of deserts

deer:forest

small trees: maybe

I hope this helps u! ;)

PLS give brainliest! i need to level up, and a thx too!

Which process will the bacteria use to obtain energy?
A. Cellular respiration
B. Photosynthesis
C. Lactic fermentation
D. Alcoholic fermentation

I think it’s B someone tell me if it’s right

Answers

Answer:

B

Explanation:

Tu as raison!

Though some bacteria also feed off of dust, dead skin cells, corpses, human waste, etc, most survive from photosynthesis and no form of decomposition capable by bacteria is a possible answer.

The answer is B, you are correct!

Why do countries not convert from the use of oil to solar energy?
Solar energy is more difficult to use than oil to make electricity.
It requires more work to use solar energy to make electricity.
Solar energy is a limited resource.
It is more expensive to create solar energy than use oil for making electricity.

Answers

Answer:

It is more expensive to create solar energy than use oil for making electricity.

Explanation:

Solar energy is a renewable source of energy from the sun. It is the most powerful and eco-friendly source of energy, however, many countries still do not use this source of energy in creating electricity. This is because the technology behind using solar energy to create electricity is very expensive in comparison with the use of oil.

In as much as solar energy is always readily available everywhere and everyday (natural), building the technology to make it generate electricity is huge. Hence, countries stick to the use of oil, which is way cheaper to operate.

NEED HELP ASAP!!!!!!!!!!!!!!!!!!!
Which statement best describes black holes?



Black holes are the remnants of dead, massive stars


Black holes are the remnants of planets that broke up from moving to fast.


Black holes are young stars that have not yet begun to shine.


Black holes are theoretical objects and have never been found.

Answers

Answer:

the last one

Explanation:

D. Black holes are theoretical objects and have never been found.

The first group to exhibit an amniotic egg was the

Answers

The first group to exhibit an amniotic egg was a cartilaginous fish

What plant is this? What's its purpose?

Answers

It is a lucky bamboo it brings good hope for the future


To test the effectiveness of a new nutrient supplement, one group of identical mice is given the supplement, and the other group is
not given anything. Which is the most complete list of the parts of an experiment presented in this scenario?

Answers

Answer:

The options are

A.independent variable, dependent variable

B.control group, experimental group, dependent variable

C.independent variable, control group, experimental group

D.control group, experimental group

The answer is C.independent variable, control group, experimental group.

The most complete list of the parts of an experiment presented in this scenario would surely be the independent variable, the control and experimental group inclusive.

Answer:

The correct answer is C.

which rocks are examples of chemical sedimentary rock check all that apply

Answers

Answer:

Shale and sandstone

Explanation:

Answer:

Clastic sedimentary rocks such as breccia, conglomerate, sandstone, siltstone, and shale are formed from mechanical weathering debris. Chemical sedimentary rocks, such as rock salt, iron ore, chert, flint, some dolomites, and some limestones, form when dissolved materials precipitate from solution.

Explanation:

The letters A, B, C, and D represent four positions of the Moon in its orbit around Earth. The nighttime sides of the Moon and Earth are shaded. Approximately how many weeks will it take the Moon to move from position B to position D?

Can I also get an explanation please? WILL MAKE BRAINLIEST!

Answers

Answer:

14 days

Explanation:

it takes 28-29 days for the moon to orbit the earth so half of that is approx 14

Answer:

The amount of days is about 2 weeks.

On April 20, 2010, an explosion on the Deepwater Horizon Macondo oil well drilling platform released 4 million barrels (636,000 cubic meters) of oil into the Gulf of Mexico. It took scientists and engineers nearly three months and several different attempts to cap the well. The Macondo oil well was located 1524 m (5000 feet) below the surface of the water, about 80 km (50 miles) off the coast of Louisiana. The spill affected 2113 km (1300 miles) of shoreline along the coasts of five states. Most crude oil contains 84–87% carbon by weight. Scientists have not yet fully assessed the environmental impact of the accident.

Reducing our dependence on petroleum is a difficult task, so policy makers are organizing it into smaller, simpler problems that can be solved more easily. Choose two of the solutions below that may help reduce our dependence on fossil fuels.
a
Researching alternative fuels to petroleum, such as ethanol.
b
Increasing taxes or fees to help pay for cleanup costs.
c
Requiring rooftop gardens to be built on all new buildings to reduce air pollution.
d
Developing transportation methods that do not require the use of petroleum products.

Answers

Answer:

I believe your answer is. A

Explanation:

If plant sap has as much sugar as a can of soda, do you think that if you bit into a plant’s leaves or stems, would it taste sweet? Why or why not?

Answers

Answer:

No

Explanation:

If plant sap has as much sugar as a can of soda, they will not taste sweet if one bit into their stems of leaves.

This is because most plants do not store sugar, which is the product of photosynthesis, in leaves or stems. The few ones that store their photosynthetic products in leaves/stems do not store them directly as sweet sugar. They often stored them as starch which is not generally sweet in taste.

Hence, plant's leaves/stems will not taste sweet even if they have as much sugar as a can of soda.

what type of cells produce gametes,sperm, and egg cell

Answers

Answer:

They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are produced through a type of cell division called meiosis.

Explanation:

Answer:

sex cells.

Explanation:

Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome..

Good luck.

When listing the levels of organization in organisms from least complex to most complex, which level is just below organs in complexity?

Answers

From least to most complex, TISSUES, is right below organs.

Answer:

D tissues

Explanation:

Which of these engulf bacteria and break them down?

lymphocytes
phagocytes
T-cells
B-cells

Answers

Answer:

The answer is option b.

phagocytes.

Hope this helps.

Answer:

phagocytes

Explanation:

a hormone Cascade occurs when​

Answers

Answer:  A hormone can stimulate the release of series of other hormones, the last of which activates a nonendocrine target the cell this is called a hormone cascade pathway. The release of thyroid hormone results from a hormone cascade pathway the hypothalamus, anterior, and thyroid gland.

Which structure will form when a primitive cell engulfs an aerobic bacterium?

Answers

Answer:

Mitochondria

Explanation:

This was the first endosymbiotic event during our primitive cell basically engulfed an aerobic bacteria which later formed into mitochondria. This is why mitochondria has its own DNA as well (called the mitochondrial DNA)

Answer:

Mitochondria

Explanation:

Please help I wasn't paying attention. I'll MARK THE BRAINLIEST.

Choose THREE: What is the THREE roles/functions of the nervous system?
A.) Receiving information
B.) Responding to information
C.) Maintaining homeostasis
D.) Transforming food into energy for the body

2.) TRUE/FALSE: You can move without your nervous system.
A.) True
B.) False

3.) TRUE/FALSE: All nervous system responses are voluntary or under your control.
A.) True
B.) False

4.) A change or signal in the environment that makes the nervous system react is called a:
A.) Stimulus
B.) Response
C.) Nerve Impulse
D.) Synapse

5.) If you touched a hot object, what would the stimulus be?


6.) If you touched a hot object, what would the response be?


7.) Give an example of a stimulus and describe your body's response.

Answers

1. a,b and c

2. false

3. false

3. Stimulus

4. Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends impulses to relay neuron. Motor neuron sends impulses to effector.

5. skin receptors quickly send nerve impulses (electrical) to the spinal cord (central nervous system) via sensory neurons

6.  tropism, in plants is phototropism (or light response). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.

Answer:

A,B,C

FALSE

FALSE

STIMULUS

PULL YOUR HAND AWAY

The ringing of a telephone prompts to answer a call.

Explanation:

The sensory neurons found in the receptor organ ( which is the ear ) will detect the ringing of the telephone, and will therefore transmit a nervous message to the central nervous system .The brain interprets the nervous message , and then sends a message through the motor neurons to the effector organ , which in turn will respond by answering the call .

The distance that wind blows across an area of the sea to generate waves is the_________.
a)trough
b)wave period
c)fetch
d)sargassum

Answers

Answer: C-fetch

Explanation:

Answer:

Fetch.

Explanation:

Fetch, area of ocean or lake surface over which the wind blows in an essentially constant direction, thus generating waves. The term also is used as a synonym for fetch length, which is the horizontal distance over which wave-generating winds blow.

Which of the following correctly describe magnetic field lines?

Answers

Answer:

The answer is B

Explanation:

I hope that help :)

Answer:

Actually it is all of them

Explanation:

PLEASE...THIS IS MY SCIENCE FINAL!!!
Which of the following is a function of plant roots?

A) Acts as an anchor to hold the plant in the soil

B) Water and nutrients enter the plants from the roots

C) Absorbs oxygen for respiration

D) All of the above are functions of roots

Answers

The answer would be D.)

Answer:

D

Explanation:

The roots act as an anchor and take in minerals/nutrients while the roots also take in oxygen. But for the Water, the leaves, roots and stem take in the water so all 9f the above.

How many pairs of chromosomes does a human have in their liver cells

Answers

Answer: 46

Explanation:

In a normal human lever cell there are 46 chromosomes, because liver cells are somatic, so they are diploids, thus they have a full set of chromosomes.

Which of the following statements is TRUE?
Multiple Choice
Peanut butter is an empty-calorie food,
A megadose of vitamin C is within the range of safe intake for the nutrient.
Most foods are mixtures of nutrients.
A healthy diet supplies 90% of its calories from protein-rich foods.

Answers

Most foods are mixtures of nutrients.

Most foods are mixtures of nutrients.

According to the geological time scale, ______ evolved after the first insects evolved. mammals, bacteria, cells with a nucleus, or, multicellular organisms?

Answers

Answer:

Mammals would be the correct answer.

Explanation:

Answer:

mammals is correct

Explanation:

taking the quiz got it right.

Letter A represents a wave’s

Answers

Answer:

d wave length

Explanation:

d
should be your answer

Think Critically: Use your knowledge of food chains and energy pyramids to explain why fewer lions than gazelles live on the African plains?

Answers

Hi there!

We know that both lions and gazelles are both consumers. But gazelles are more known for eating producers such as grass. Plains are filled with grass and it makes it easier for gazelles to find and eat their food than a lion who has to actually spend the time to look and hunt for food.

Hope this helps !

How does the cell membrane control what comes in and out of the cell?

The cell membrane contains pores that let all molecules in and out of the cell.
The cell membrane does not let anything in or out of the cell.
The cell membrane contains small pores that filters in needed substance and filters out waste product.
The cell membrane does not let substance in or out of the cell.

Answers

Answer:

The cell membrane contains pores that let all molecules in and out of the cell.

Explanation:

I believe it is this one not positive though

Answer:

I think its C. The cell membrane contains small pores that filters in needed substance and filters out waste products.

Explanation:

Sorry if it wrong it just makes the most sense.

Transpiration occurs when plants release water vapor.
True or False?

Answers

Answer:

true

Explanation:

Answer:

false Explanation: The water eventually is released to the atmosphere as vapor via the plant's stomata tiny, closeable, pore-like structures on the surfaces of leaves. overall this uptake of water at the roots, transport of water through plant issues, and releases of vapor by leaves is known as transpiration.

Imagine you are an engineer who needs to test a scale model of a
footbridge. It will be a 1/20 scale model. The footbridge will cross
over a busy road and allow people to cross the road safely. How
could a relatively small design error of 2 centimeters in the model
system cause a significant problem in construction of the bridge?

Answers

Answer:

The problem will be because:

The error in the construction of the bridge will be actually 40 cm.

Explanation:

When you, as an engineer, listen about a scale 1/20, it means that for each 1 cm in the model, it will be 20 cm in the real footbridge (20 times upper to the scale model), then how the error in the model is 2 cm, the real error is 40 cm, in this case, imagine that you didn't know that the bridge will have an error of 40 cm, which is approximately 1,31 ft, from a side of the bridge you begin with the correct measure, and the other side you use the measure with the error of the 40 cm, the result is that when you going to finish the bridge in the center, this won't match, making more expenses to correct that big error.

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