Hello! Can someone explain Pollen Tube Germination to me?

Answers

Answer 1

Answer:

At the time of liberation, it becomes 2 celled, with a small generative cell and a vegetative cell. In the nutrient medium, the pollen grain germinates. The tube cell enlarges and comes out of the pollen grain through one of the germ pores to form a pollen tube. The tube nucleus descends to the tip of the pollen tube.

Explanation:


Related Questions

21. Which stage of aerobic respiration produces ATP and NADH and release CO2?
a Glycolysis
b. Krebs cycle
c Electron transport chain
d. Fermentation

Answers

a. glycolysis thats it

stage of aerobic respiration produces ATP and NADH and releases CO2, which is the electron transport chain that is in option c, as the ETC has a role in the production of ATP in cellular respiration.

What is the significance of respiration in ATP synthesis?

It plays an important role in respiration because it is formed by the oxidation of glucose or other organic molecules in the mitochondria of eukaryotic cells and in the cytoplasm. During respiration, glucose and oxygen are consumed, and carbon dioxide and water are produced, and then the mitochondria make ATP by taking the products of glucose.

Hence, aerobic respiration produces ATP and NADH and releases CO2, which is the electron transport chain that is in option c, as the ETC has a role in the production of ATP in cellular respiration.

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Help please? *25 points*

Answers

Answer:

Yes, if igneous rock us moved to earth's surface and exposed to energy from the earth's sun, it could weather into smaller pieces that could form sedimentary rock.

Explanation:

I found that answer on Google, so I'm honestly not sure if it'd be A or B. Sorry! hope this helps a bit.

The answer is yes I looked it up and I had the question on a test

Which high school courses would be beneficial for a career in parasitology?

Answers

Answer:

allows them to focus on parasitology in topics such as zoonotic diseases, parasitic diseases and dynamic ecosystems.

Explanation:

Explanation:

Biology and Biochemistry

What type of cells do cellular respiration and photosynthesis occur in?

Answers

Answer:

All cells carry out cellular respiration but only cells with chloroplasts allow for photosynthesis to occur

1. Georgina is a rock collector. She is looking at some information about two of the
rocks she has collected on her travels. The information is as follows:
• Rock A formed from small pieces of rock.
• Rock B formed from liquid rock in a different place.
• Rocks A and B formed at about the same time.
Are Rocks A and B the same or different types of rock?
The rocks are
a the same type because they are both formed from rock material.
b the same type because they formed at the same time.
c different types because they formed in different ways.
d different types because they formed in different places.

Answers

Answer: C) different types because they formed in different ways.

Hope this helps!! :D

Rocks A and B are different types because they formed in different ways.

What are the different types of rocks?Igneous rocks are created by the melting of rock deep within the Earth.Sand, silt, dead plants, and animal skeletons combine to form sedimentary rocks.Metamorphic rocks are created from other rocks that have been altered underground by heat and pressure.

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Sleep could be best described as a

A. car with the engine started, but parked and idling

B. truck driving on the freeway in the right lane

C. train with cargo being loaded at the start of a trip

D. bicycle riding uphill in the wind

Answers

Answer:

The correct answer is A. car with the engine started, but parked and idling

Explanation:

This is the correct answer on edg. 2020

Answer:

The correct answer is A

Explanation:

edge 2021

Which statement about active transport is most accurate? Active transport utilizes energy from ATP molecules. Active transport utilizes energy from ATP molecules. Active transport is essential to move water into and out of a cell. Active transport is essential to move water into and out of a cell. Active transport is the only way to move ions into and out of a cell. Active transport is the only way to move ions into and out of a cell. Active transport is required to move ions into and out of a cell. Active transport is required to move ions into and out of a cell.

Answers

Answer:

I feel like you just answered your own question but I'm going to help you out anyway, active transport utilizes energy from ATP molecules.

Explanation:

The most accurate statement about active transport is active transport utilizes energy from ATP molecules.

Transport active is a type of transport used by cells to move substances against a concentration gradient across cell membranes.

Active transport Is mediated by different membrane proteins known as carrier proteins coupled to an energy source such as, for example, ATP.

During this process (active transport), hydrolysis of ATP provides the energy required to move molecules/ions against a concentration gradient.

In conclusion, the most accurate statement about active transport is active transport utilizes energy from ATP molecules.

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A high abundance of nutrients can cause which of the following? A.) heavy rainfall B.) an increase of crop production C.) aggressive competition between producers

Answers

Answer:

B) an increase of crop production

2. Are the volume values similar to each other or are they quite different? Explain why you see what you see. If they are similar explain why. If they are different also explain why. ​

Answers

Answer: The density, ρ, of an object is defined as the ratio of its mass to its volume. ... Mass and volume are extensive (or extrinsic) properties of matter - they ... In this experiment, you will measure masses and volumes to determine density.

Explanation:

WILL GIVE BRAINLIEST!!!
What do prokaryotic and eukaryotic cells have in common?

mitochondria

nucleus

cytoplasm

lysosomes

Answers

Cytoplasm

Only eukaryotic cells have mitochondria, a nucleus and lysosomes (because prokaryotes don’t have a Golgi apparatus to make lysosomes)

The only other things they have in common are the plasma membrane (cell surface membrane) and ribosomes.

Tumu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.

Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?

the magnified shapes of cells in a piece of cork
the different cells that make up a plant leaf
the types of cells at work in the human body
the way root cells reproduce to increase root length

Answers

Answer:

the way root cells reproduce to increase root length

Explanation:

Virchow discovered how cells reproduce so this would be the most reasonable answer

Answer:

It's D

or

(The way root cells reproduce to increase root length)

Explanation:

Edge Approved!!!!

Which cell structure is found in plant and animal cell and controls what can come into or leave a cell

Answers

Answer:

Cell Membrane

Explanation:

Why did Gregor Mendel choose to use purebred plants in his experiments?

Answers

He knew that the offspring would always have the same form of trait as the parents.





Hop it works







Mark me as brainliest plz

Answer:He knew that the offspring would always have the same form of trait as the parents.

Explanation: google

Help please!! I will give brainliest!!
Cellular (aerobic) respiration takes place in the presence of and with the use of a certain element.


Which element is it?

Answers

Answer:

air

Explanation:

Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.

Takes place without Oxygen (o2) this is because the prefix aero means air.

Most of the air pollution in the news is the result of

Answers

Answer:

burning of fossil fuels

Explanation:

Air pollution is human-provoked, because of the factories, powerplants, cars, planes, and most important, because of the burning of fossil fuels, such as coal, gas, oil, gasoline.

The indicator that shows how much fossil fuel is burned every day is carbon-dioxide, as it indicates how many dangerous gases are let in the air.

. During which stage of a cell’s cycle do the replicated chromosomes thicken and become visible

Answers

Answer:

Prophase

Explanation:

The replicated chromosomes thicken and become visible as separate chromosomes during prophase stage of mitosis.

answer correctly for brainliest
......................................

Answers

Answer:

1. classification

2. deductive

3.reasoning

4. science

5. energy

Explanation:

What is the role of DNA in transmitting genetic
information? Describe DNA's important genetic
role in a few sentences below.

Answers

Explanation:

The major function of DNA is to encode the sequence of amino acid residues in proteins, using the genetic code. To read the genetic code, cells make a copy of a stretch of DNA in the nucleic acid RNA.

water pollution is the addition of harmful substances to water. some of these substances are found at home. what household chemicals might be harmful if not disposed of properly?

Answers

Answer:

flammability, corrosion, and explosibility).

Answer:

flammability, corrosion, and explosibility).

cleaning supplies, bleach, laundry detergent, window cleaner, fertilizers. oils, and soap

Explanation:

Which one of the following is NOT a REACTANT (or ingredient) needed for photosynthesis?

A) Solar Energy
B) Carbon Dioxide
C) Glucose
D) Water

Answers

Answer:

The awnser is Glucose

Explanation:

It is made during photosynthesis but does not need to taken in through the process

in the water cycle, when water vapors turn into a liquid filling the clouds it is called,
Condensation
precipation
evaporation
transpiration

Answers

Answer:

precipitation

Explanation:

Which statement describes a common measurement error?

Answers

Where are the statements

Why were Hamilton, Madison, and Jay so committed to the Constitution?

Answers

Answer:

In the Federalist Papers, Hamilton, Jay and Madison argued that the decentralization of power that existed under the Articles of Confederation prevented the new nation from becoming strong enough to compete on the world stage, or to quell internal insurrections such as Shays's Rebellion.

Explanation:

What is the function of mRNA in the diagram above?

Answers

Carrying the genetic message from DNA to the ribosomes

The function of mRNA in the diagram given above is carrying the genetic message from DNA to the ribosomes.

What is the function of mRNA?

The main function of mRNA has to work as the immedieter between the protein and DNA which has been  utilised by the ribosome for the process of the direct synthesis of protein, and the function of tRNA has to carry the accurate amino acid to the proteins synthesis site which takes place in ribosome.

RNA has backbone and it has to made up of phosphate group which has been arranged in alternating form and the sugar known as ribose other than the deoxyribose  present in DNA. There are four bases found in RNA and these are adenine, uracil, guanine, and cytosine.

Liquid consist of small range of order and the reason behind this is intermolecular attractive force which is very strong and due to this reason molecules are packed together tightly.

Therefore, The function of mRNA in the diagram given above is carrying the genetic message from DNA to the ribosomes.

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Need the answer ASAP
thanks

Answers

Answer:

kingdom, division, class, order, family, genus, species.

Explanation:

The group of protons and neutrons are known as what ? A. Nucleons B. Positrons C. Megatrons D. Neutrons

Answers

Answer:

Nucleons

Explanation:

Nucleons can be either protons or neutrons so instead of saying a group of protons an neutrons you can just say nucleons

Answer:

nucleus

Explanation:

Which statement is true about photosynthesis?
A: photosynthesis happens in The mitochondria
B:During photosynthesis energy from the sun is stored in the chemical bonds of glucose molecule
C: photosynthesis releases energy to the environment
D: One of the inputs of photosynthesis is oxygen

Answers

Answer:

B.

Explanation:

B. is the only true statement

how many times does interphase occur before meiosis

Answers

Answer:

Once, at the beginning

Explanation:

Brainliest please

I believe it’s once, at the beginning...

When you toast bread, electrical
energy is converted to what type
of energy in the toaster?
A. Heat
B. Sound
C. Nuclear
D. Electromagnetic

Answers

Answer:

heat

Explanation:

heat and electricity is what is used to cook/toast the bread

Why is it difficult for your body to return blood from your feet when you sit for too long?. Single choice. a. Blood has to travel a greater distance. B. Skeletal muscles are not squeezing the veins. c. Gravity makes the blood flow backward. d. The heart does not beat fast enough at rest.

Answers

Answer: Option C.

Gravity makes the blood flow backward

Explanation:

it difficult for your body to return blood from your feet when you sit for too long because gravity makes blood flow backward and this is because when you sit for long , it weakens the keg muscles because it is necessary for body movement so that blood will circulate or flow well. When the keg muscles becomes weak, it will slow blood flow in the leg and the force of gravity acting will make the blood flow backward and thus can cause a blood clot.

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Brainliest will markWhich statement shows the associative property of addition?13(k5)=(k5)1313(k5)=(13k)513+(k+5)=(13+k)+523+6y=6y+23 SPANISH HELP ASAP MULTIPLE CHOICE 1.Los estudiantes _________ el plan para reducir el gasto de petrleo.sabesabieronsupieronsupo2.Isabel ________ que salir maana a las ocho.tendrtendrtuvetener3.Este zoolgico _________ las especies en peligro de extincin. protegersprotegernprotegerproteger4.Claudia vino _________ ayudar a Marcela _________ la maana.por, porpara, porpor, parapara, para5.Las organizaciones para la proteccin del medio ambiente ________ en equipo.actuaractuarnactuaractuaremos What are the major qualifications and conditions for attaining the presidency? Please help me and Ill give you brainiest!!!!!!!!! Have a wonderful day!!:))))))!!!!!! (16 points)What is the purpose of a clinical study report (CSR)? A. A CSR documents that a participant has given informed consent. B. A CSR will be published in a medical journal. C. A CSR reports all procedures, data, and results from a clinical trial. D. A CSR tracks a participant's progress through a clinical trial. Evaluate the expression when x = -3-5x -15Show your work Jaron paid $13.80 for 5 tickets to the game. At the same rate, how much would 3 tickets cost? * the backcountryThe laborious business is here chiefly done by black slaves of which there aregreat multitudes. The climate is very warm; the chief produce is rice & indigo;the manufacture of hemp is set afoot & likely to succeed very well. They haveconsiderable lumber and naval stores [tar, pitch, and turpentine). They exportannually 100,000 barrels of rice & 60,000 lbs. indigo,...-Pelatiah Webster, Personal Journal, 1765a New England Colonya Southern ColonyBased on information in the excerpt, the author was most likely living in -(8.11A/293)a Middle Colony "True or False? Software designers use layering and other techniques to organize large software systems." First I want to say hi to those looking at this "question" I need to know the answer to this please:Which statement about Mound Builder ear spools is true? A)They are strung and worn around the neck like a chain. B)They are strung and worn around the neck like a chain. C)They have pictures made with detailed lines and shapes. D)They have pictures scratched or carved onto a flat surface. They always show pictures of people. 40 is 60% of what number? **ROUND TO THE NEAREST TENTH** * What is purpose of cellular respiration. proporties of mixtureshas no set compositionmust have more than one state of mattermust have more than one substanceWhat mistake did Dominic make?The title should read Properties of Solutions because some mixtures do not have all of the properties listed.There is a definite recipe to make each mixture, so the composition of a mixture is set.Although it is possible to have more than one state, it is also possible to have only one state.A single substance can be used to make a mixture if the substance is composed of more than one element. Complete each sentence with the appropriate familyvocabulary word based on the family tree below.AlbertoInsLucindaJulieta-CarlosMarcos1Mara MiguelHumbertoJulioPatricia1. Julio es elde Miguel y Mara.2. Marcos es elde Miguel.3. Julieta es lade Marcos.4. Julio es elde Alberto e Ins.5. Ins es lade Miguel y Julio.6. Julio es elde Marcos yLucinda. cyber crime has become a serious problem nowadays justify #2) Choose the graph that matches the equation below.y =1/2x+1ABC D A mole is blank objects 3(x-2) 5. A lawnmower designer wants to build a lawnmower that measures 3 feet in height, 2 feet in width, and 5 feet in length. She needs to construct a three-dimensional scale model of the lawnmower first. Which measurements are appropriate for the scale model?-7in high, 6in wide, and 9in long -6in high, 4in wide, and 10in long-9in high, 4in wide, and 10in long-9in high, 6in wide, and 10in long Line graph showing percentage of people living on less than one dollar a day. The graph shows that the percentages for the world's regions have remained fairly consistent from 1981 to 2001, with the exception of East Asia and South Asia. The graph shows that the Middle East and North Africa and Eastern Europe and Central Asia have relatively low percentages of people living on less than one dollar a day. Both regions average below 10 percent. Latin America averaged about 10 percent over the period of 20 years. The world average was about 40 percent in 1981 and leveled off to about 20 percent in 2001. Sub-Saharan Africa averaged about 40 to 45 percent over the period. East Asia began with about 60 percent living in poverty in 1981 and plummeted to about 15 percent living in poverty in 2001. South Asia began at about 52 percent in 1981 and dropped to about 30 percent in 2001. Public Domain According to this graph on world poverty, what are the trends of the world average and Sub-Saharan Africa? (5 points)