Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light. It will flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light the cocklebur will not flower. What triggers cocklebur to flower

Answers

Answer 1

Answer:

Photoperiodism

Explanation:

The process explained in the question is called "Photoperiodism" which refers to the plants' reaction to the length of the dark and light period in a day.

When the dark period is interrupted with a certain period of artificial lighting, the plant thinks that the day had a longer period where it's "light" than it is "dark" so it gets tricked into flowering. Same concept can be applied in reverse for the plants who flower during longer periods of dark.

I hope this answer helps.


Related Questions

How many core biosafety work practices (or do's and don'ts) are there, according to the National Research Council’s book entitled, Prudent Practices for the Handling and Disposal of Infectious Materials?

Answers

Answer:

seven

Explanation:

There are seven biosafety practices which should be followed during the Handling and Disposal of Infectious Materials. These biosafety practices were made by the scientists in order to reduce the chances of contamination of worker who deals with the handling and disposal of Infectious or toxic materials. If these seven biosafety practices were not followed by the workers so there is high chances of infection which leads to their death.

What are the functions of SER

Answers

Answere1SER helps in the manufacture of fat molecules or  lipids

2It plays a critical role in detoxifying many poisons and drugs in the liver

Answer:

SER (Smooth Endoplasmic Reticulum) produces and exports lipids and protein, and SER functions for detoxication. It is concerned with carrying out certain metabolic processes.

a) Name the structures that: i) Carry water and mineral salts to the leaf ii) Prevents too much water loss from the upper surface of the leaf iii) Opens to allow gases to pass into and out of the leaf iv) Is the site for most of the photosynthesis taking place v) Is the layer where light is able to pass through directly b) How does a leaf protect itself from unwanted intruders like bacteria from getting in and stopping important reactants from going out? PLEASE ANSWERR

Answers

Answer:

a) i) Xylem

   ii) Upper epidermis  

   iii) Stoma

   iv) Chroloplast  

   v) Palisade cell layer

b) By a waxy layer on the cuticle of the leaf

Explanation:

The plant's leaves have a large surface area that is capable of absorbing sunlight. The plant's waxy layer in the surface of the leaf protects it from the loss of water, as well as of diseases caused by the entry of microorganisms. The palisade cell's surface is a single layer of cells underneath the upper epidermis that is adapted to absorb light energy.

The waxy layer is a primary physical barrier composed of insoluble polymers and lipids whose function is to protect the leaves against the entry of harmful organisms including virus, bacteria and fungus. Moreover, the plant's waxy cuticle is also a barrier that prevents the loss of water and solutes.

Answer:

luisvaschetto is right!!!!!!! i got a 100.

When you eat, your blood glucose level rises. Soon after, it drops as the glucose is stored. Where does it go?

Answers

Explanation:

About to six hours after you eat the glucose levels in your blood decrease triggering your pancreas to produce glucagon. This hormone signals. your liver and muscle cells to change the stored glycogen back into glucose.

what is the function of Krebs Cycle please help!!!!!

Answers

Explanation:

it is the final process of oxidisation for food stuff

Which phrase describes a feature of an earthquake’s epicenter?

starting point of an earthquake
place around the center of an earthquake
region directly above the focus
point about 100 kilometers deep in the lithosphere

Answers

Answer:

It is answer c

Explanation:

i know this because The epicenter is directly above the earthquake's hypocenter (also called the focus)

The phrase which describes a feature of an earthquake’s epicenter is: C. region directly above the focus.

An earthquake can be defined as a sudden, natural shaking of the ground, as a result of movements within the Earth's crust and upper mantle (lithosphere) that typically creates seismic waves.

An epicenter is the point on the surface of planet Earth, which is perpendicular to the hypocenter (focus) and it indicates where the seismic waves from an earthquake are most intense.

On a map, an earthquake’s epicenter is located at the point where the three (3) circles intersect because earthquake are generally shallow.

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Which describes one characteristic of both El Niño and La Niña?

Both are causes of long-term climate change.
Both create warmer water.
Both occur in the Pacific Ocean.
Both are causes of hurricane activity.

Answers

Answer:

Both occur in the Pacific Ocean.

Explanation:

El Niño and La Niña are opposite phases of a natural climate pattern across the tropical Pacific Ocean that swings back and forth every 3-7 years on average

Answer:c

Explanation:

Which is an example of an idiosyncratic reaction?
a. Nausea after taking an antibiotic agent
b. Excitement and agitation after taking a sedative
c. Increased clotting time after taking heparin
d. Sedation after taking a sleeping pill

Answers

Answer ; A

Idiosyncratic reactions are unpredictable and not explained by the pharmacologic properties of the drug. An example is the individual with infectious mononucleosis who develops a rash when given ampicillin.

Definition. Idiosyncratic drug reactions are adverse drug reactions that do not occur in most patients at any dose and do not involve the known pharmacological properties of the drug.

hope this help

The protein RDA for adults is 0.8 grams per kilogram of healthy body weight per day. A woman weighs 60 kg and her weight falls within the normal range for her height. How much protein (in grams) should she consume in one day?

Answers

Answer:

Amount of protein required = 48 gram

Explanation:

Given:

Adult required = 0.8 gram protein per kg

Weight of women = 60 Kg

Find:

Amount of protein required

Computation:

⇒ Amount of protein required = Total body weight × 0.8 gram protein

⇒ Amount of protein required = 60 × 0.8

Amount of protein required = 48 gram

match the boinomial of some common level local organisams from a two coulmn list on the basis of generic and specific name

Answers

Explanation:

human being : Homo sapiens

dog: Canis familiaris

house fly: Musca domesticated

domestic cat: Felis domesticus

maize: Zea Mays

Bean: Phaseolus vulgaris

lion : Panthera leo

honey bee: Apis mellifera

Why has society changed its view on smoking since 1960

Answers

Answer:

Ever since scientists discovered that smoking is bad for the lungs and the body in general, over time there became less and less people who do it. Even though the scientists are right, people still make the wrong choice and start smoking. Most people agree on the fact that smoking is bad for your health.

Carbonic anhydrase inhibitors cause less movement of carbonic acid toward carbon dioxide production and are used as a prophylactic treatment of altitude sickness. Altitude sickness occurs when a hiker ascends to altitudes where the density of oxygen is low. How does this decrease the symptoms of high altitude sickness?
A) The excess hydrogen ions are excreted in the urine and the resulting loss of acidity increases respiration rate.
B) The excess bicarbonate ions are excreted in the urine and the resulting loss of blood pressure increases respiration rate.
C) The excess bicarbonate ions are excreted in the urine and the resulting increase in blood acidity leads to an increase in ventilation.
D) The excess bicarbonate ions in the blood increase the affinity of hemoglobin for oxygen.

Answers

Answer:

The excess bicarbonate ions are excreted in the urine and the resulting increase in blood acidity leads to an increase in ventilation.

Explanation:

Consider this plant cell. The organelles in a plant cell are labeled. Part E is a complex of vesicles and folded membranes within the cytoplasm. Which organelle is labeled E? Golgi apparatus chloroplast ribosome nucleus

Answers

Answer:

Golgi apparatus

Explanation:

The organelle labelled E is the Golgi apparatus

The organelles found in the cytoplasm are called cytoplasmic organelles

What is cell?

Cell is defined as the simplest, basic and structural unit of life.

There are two types of organisms based on the number of cells they have; namely:

Unicellular organismsMulticellular organisms

Unicellular organisms are organisms possessing only one cellMulticellular organisms are organisms which has two or more cells

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Where do I can find a white deer in far cry primal

Answers

Try to find a flock of deers and look for a golden trace around them. If you see it follow it and it will lead you to a rare white deer or rare animal

Rank the following substances based on how quickly sound will travel through them from fastest to slowest. Then explain your ranking, based on the properties of sound wave
•air
•water
•rock

Answers

Answer:

Rock

Water

Air

Explanation:

Sound can travel through rock the fastest since the molecules are packed the tightest and the second tightest is water than air

Describe under what conditions you might expect your cells to undergo anaerobic respiration. Be specific as to why these conditions would prevent normal cellular respiration to proceed. What product is produced under anaerobic conditions and is it harmful?

Answers

Answer:

Explanation:

Cells start undergoing anaerobic respiration when energy requirement is high and there is not sufficient availability of oxygen to produce required energy .

For example , when we we run fast , energy requirement by muscle cell is high but available oxygen level is not sufficient so cells start anaerobic respiration which produces lactic acid and this product creates tire-ness.

For normal respiration , oxygen is required . If there is lack of oxygen , aerobic respiration is not possible .

In yeast cells , alcohol is produced by anaerobic respiration. Alcohol is not harmful . In muscle cells , lactic acid is produced which is harmful .  

WILL GIVE BRAINLIEST Compare and contrast bacterial and eukaryotic ribosomes.

Answers

Answer:

Ribosomes. Eukaryotic ribosomes are larger. They consist of a 60S large subunit and a 40S small subunit, which come together to form an 80S particle having a mass of 4200 kd, compared with 2700 kd for the prokaryotic 70S ribosome. The 40S subunit contains an 18S RNA that is homologous to the prokaryotic 16S RNA.

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Have a nice day!!!!

advantages of cutting crops with sickle?​

Answers

Answer:

The advantages of cutting crops with a sickle is that it's very environmental friendly. Sickle doesn't produce harmful chemicals like nitrate and biogas that can cause pollution to the environment or to the crops. However, sickle cutting is a very tremendous work.

Explanation:

Which characteristic describes the whale but not its food source, the phytoplankton? The whale is heterotrophic. The whale has cell walls. The whale is unicellular. The whale is a prokaryote.

Answers

Answer:

A. The whale is heterotrophic.

Explanation:

The whale is an aquatic animal that is heterotrophic in nature. Heterotrophic means that this animal lacks the ability to manufacture its own food because it depends on plants and animals as a source of food energy. Since the Whale is dependent on phytoplankton for food, this means that it is not a producer of food and as such is heterotrophic.

Phytoplankton is a marine alga. Algaes are prokaryotes and this means that they are unicellular animals without a membrane-bound nucleus. The Cell wall is mostly a characteristic of plants. So the first option is a perfect description of the whale and not its food source which is the phytoplankton.

Answer:

ExplanationThe whale is heterotripic

dromedary, camel, alpaca, vicuña, guanaco, llama, which species are most similar to each other? what is this about?

Answers

Answer:

Alpaca and llama are the most similar

Explanation:

An alpaca is a mix of a donkey and llama so alpaca and llama are the most similar.

In an organism, X, it is found to be impossible to generate loss-of-function mutants for most genes. There is an alternative method of introducing random mutations that can later be screened for the gene(s) in question. This can be accomplished by using insertions due to what genetic entities?

Answers

Answer:

Transposable elements (TE)

Explanation:

A transposon, also known as 'jumping genes', is a particular sequence of DNA that can relocate inside of the genome. It affects the genetic identity and can be made use of to either reverse a mutation or create one - it duplicates that genetic sequence. Retrotransposons is a class of TE found in viruses.

The countercurrent multiplier is a system by which the:______.
a. nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla.
b. nephron loop dilutes the concentration of solutes in the tubular fluid at its hairpin turn.
c. vasa recta secretes multiple amounts of metabolic wastes against their concentration gradient.
d. vasa recta becomes more concentrated with nitrogenous wastes than the urine.

Answers

Answer: Option A.

nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla.

Explanation:

countercurrent multiplier is a system that utilize energy that create osmotic gradients and enable reabsorption of water thereby increase concentration of urine. The countercurrent multiplier uses electrolyte pumps there by making the nephron loop increase the concentration of salts in the interstitial fluid of the kidney medulla because it allows the nephron to reabsorb alot of water and and increase the concentration of urine for excretion while at the same time using as little energy as possible.

Which statement best describes genetic material?
A. A single gene contains hundreds of proteins that have the code for
making more genes.
B. Chromosomes are sections of DNA that have the codes for amino
acids
C. Genes are made up of chromosomes that are packaged tightly in
DNA
D. A single gene has the code for the series of amino acids that
makes a protein.

Answers

Answer:

D. A single gene has the code for the series of amino acids that

makes a protein.

Explanation:

Genes are functional units of heredity and they are made of DNA that is packaged in components called chromosomes.

Each gene carry a genetic code which codes for the series of amino acid creating a specific protein.  In general, the genetic code specifies 20 standard amino acids that form proteins.

Hence, the best statement describes genetic material is "D" and other given options are incorrect.

Which describes the main purpose of RNA polymerase during transcription?
A. RNA polymerase is guided to the coding region.
B. RNA polymerase produces mRNA from DNA.
C. RNA polymerase pulls apart the double helix.
D. RNA polymerase reaches the end of the gene.

Answers

Explanation:

RNA polymerase reaches the end of a gene. Which describes the main purpose of RNA polymerase during transcription? ... RNA polymerase reaches the end of the gene. RNA polymerase produces mRNA from DNA

Answer:

it's D

Explanation:

The single most important feature to consider when purchasing a scuba regulator is: How well it performs in controlled laboratory testing. A second-stage adjustment knob to ensure ease of breathing. The availability of regular, professional maintenance. Both the first and second answers are correct.

Answers

Answer:

A diving regulator is a pressure regulator that reduces the pressure of gas in the tank and deliver it to the diver so that he/she can breathe easily. It must pass the controlled laboratory testing and must have a second adjustment knob to ensure ease of breathing. Modern regulators are precision made and designed to work under demanding conditions. 1st stage and 2nd stage, diaphragm and piston, exhaust valve and purge button are types of diving regulators.

A scuba regulator is a pressure regulator that lowers the gas pressure in the cylinder and supplies it to the diver, making it easier for the diver to breathe. A second adjustment knob is needed to pass controlled laboratory tests and facilitate breathing. Modern regulators are precisely designed and designed for use in harsh conditions. The first and second stages, diaphragm and piston, exhaust valve, and flush button are a type of regulators.

What does the regulator do?

The regulator is an excellent invention that provides exactly the air needed for breathing from the scuba tank. The regulator is the focus of the scuba gear and connects the scuba tank to BC, scuba pressure gauge (SPG), alternative air sources, and many other devices.

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The theater sold 562 tickets to the concert at a price of $6 each. Use the distributive property to find the product of 6 × 562. 6(562) = 6(500) + (60)(2) = 3,120

Answers

Answer:

1,897,087=1,900,207.2=3,120 (the equasion you gave when distributed)

Answer to the question(Money made): ($)3,372

Explanation:

solved it out by multiplying

Answer:

Answer to the question(Money made): ($)3,372

Explanation:

A researcher interested in the disappearance of fallen leaves in a deciduous forest carried out a field experiment that lasted nearly a year. She collected all the leaves from 100 plots scattered throughout the forest. She measured the amount of leaves present in November, May and August. The percentages reflect the number of leaves found, using the November values as 100 percent.

Answers

Answer:

Elm:    50 %; 1 %

Hazel: 69 %; 4 %  

Explanation:

Assume the table looked like this.

[tex]\begin{array}{crrr}\textbf{Month} & \textbf{Ash} & \textbf{Elm} &\textbf{Hazel}\\\text{Nov} &\text{4271 g}& \text{3481 g} & \text{1723 g}\\ & 100\, \% & 100\, \%&100\, \%\\\text{May} & \text{2431 g} & \text{1739 g} & \text{501 g}\\& 100\, \% & x \, \% &z \, \%\\ \text{Aug} & \text{1376 g} &\text{35 g} & \text{62 g}\\& 100\, \% & y \, \% & w \, \%\\\end{array}[/tex]

To get the percentages for each species for May and August, you divide that month's mass by the November mass and multiply by 100.

[tex]x = \dfrac{\text{1739 g}}{\text{3481 g}} \times 100 \, \% =50 \,\%\\\\y = \dfrac{\text{35 g}}{\text{3481 g}} \times 100 \, \% = 1 \,\%\\\\z = \dfrac{\text{501 g}}{\text{1723 g}} \times 100 \, \% = 69 \,\%\\\\w = \dfrac{\text{62 g}}{\text{1723 g}} \times 100 \, \% = 4 \,\%\\\\[/tex]

The figure below shows the graphs for ash and elm.

What might an elevated ST segment of an ECG mean?
A. All of these
B. Cardiovascular disease
C. Impending heart attack
D. Hypertrophy

Answers

Answer:

C. Impending heart attack

The elevated ST segment of an ECG mean an impending heart attack. The correct option is C.

What is an EGC?

An electrocardiogram (ECG) is a simple test that can be utilized to check the rhythm and electrical activity of your heart. Sensors attached to the skin diagnose the electrical signals generated by your heart every time it beats.

ST-segment elevation generally signals that the involved coronary artery is completely blocked and that the heart muscle is dying.

Thus, the correct option is C.

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Place the steps of biofilm formation in the correct order: 1. Quorum sensing and the establishment of the extracellular matrix commences as microbes attach more stably. 2. Surface (substratum) is preconditioned by environmental molecules. 3. Biofilm matures and some microorganisms escape to the planktonic state. 4. Microbes attach and detach from the preconditioned surface.

Answers

Answer:Step order:

2. The surface (substrate) is preconditioned by environmental molecules.

4.Microbes bind and detach from the preconditioned surface.

1.Quorum detection and extracellular matrix establishment begins as microbes bind more stably.

 3. The mature biofilm and some microorganisms escape the planktonic state.

Explanation:

The biofilm is a highly complex structure where many microorganisms coexist, compete, reproduce, feed, within a micro-system with many ideal conditions for each microorganism that is housed in it.

The biofilm is resistant to non-selective antimicrobials, that is, to disinfectants such as sodium hypochlorite, chlorhexidine, among others.

Evidence was also presented that they are resistant to selective antimicrobials such as antibiotics, that is why they have great virulence factors or potential to trigger pathology.

The solution to destroy a biofilm is mechanical sweeping, with brushing as it happens on our teeth or even with the catheter cleaning brushes that are used (in addition to the sterilization methods).

This biofilm presents separate colonies in its interim with a fluid that it travels transmitting signals, food, toxins, resistant factors between these different types of microorganisms. This fluid and this communication between them is called quorum sensing and not all microorganisms tolerate it.

Many microorganisms compete with each other for the medium, an example is streptococcus mutating in the dental biofilm, which generates an acidic medium by metabolizing carbohydrates within the biofilm, thus generating that those bacteria that live in neutral or alkaline ph cannot reproduce and die.

The biofilm can be contained by bacteria, viruses, fungi and even parasites, but what they all have in common is that they have the ability to reproduce on an inert surface such as catheters, dental surfaces, silicone hoses.

how can we improve crop production​

Answers

Answer:

Improve Soil, Increase Crop Yield to increase crop yield, start from the ground up. Testing soils. Plant Early, Plant Effectively. Practice Seasonal Soil Rotation

Answer: Plant Early,Practice Seasonal Soil Rotation,

Always Scout Your Fields......and soo one

Explanation: hope this helpes :)

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Which has more mass electron or ion? When group investors become aware of overseas investment opportunities and are willing to diversify their portfolios internationally, __________. Jenny has some tiles in a bag. The tiles are of three different colors: purple, pink, and orange. Jenny randomly pulls a tile out of the bag, records the color, and replaces the tile in the bag. She does this 50 times. The results are recorded in the given table: Color of Tile Number of times the tile is drawn i6 purple, 18 pink, 26 orange iWhat is the experimental probability that Jenny will pull out a purple tile? I don't understand how to do this problem. helpppppppppppppppppppppp i will give star thanks bralienst Question number 8! Thank you, peeps! Find the mean and standard deviation for each binomial random variable: Tameka is a social worker at a local substance abuse treatment agency. She is interested in seeing if women and men are equally satisfied with the treatment offered. She sends a satisfaction survey to people who completed treatment in the past year. To increase her response rate, she needs to: Barb Campbell owns an entertainment company which has increased both its profits and revenues over an extended period of time. Barb's firm is experiencing: A firm just paid an annual dividend of $1.40 and increases that dividend by 2 percent each year. How do you find the price if the firm's stock at year 4 if the discount rate is 13 percent? Match the items.The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives.a.Verbalb.Situationalc.Dramatic1.Jim bought combs for Della's hair, but she cut her hair.a2.The reader knows Della has cut her haira3.There are no examples of this irony in the story. If a decision variable is not positive in the optimal solution, its reduced cost is _______ Group of answer choices its dual price. the amount its objective function value would need to improve before it could become positive. what its objective function value would need to be before it could become positive. zero. How can you tell the difference between systems with no solution and infinite solutions? Which molecule or ion has a trigonal planar shape? action taken by first continental congress Which is the best example of muscular endurance Translate and solve: 3x less than two times the sum of 2X and one is equal to the sum of 2 and 5 Economist C says all of the following: Expansionary fiscal policy is needed to raise aggregate demand and remove the economy from a recessionary gap. The choice of fiscal policy measures is between ________________ government spending and a _______________ in taxes. Since I am in favor of bigger government, I choose a(n) _________________ in _________________. The elevation of New Orleans, Louisiana, is -6 feet. Which of the following best describes -6 feet? A. 6 feet below sea level B. 3 feet below sea level C. 3 feet above sea level D. 6 feet above sea level A bag of marbles contains 4 green marbles, 3 blue marbles, 2 red marbles, and 5 yellow marbles. How many total possible outcomes are there when choosing a marble from the bag?