what takes place when the pollen grains are transferred to the stigma of the same flower with the help of pollinators​

Answers

Answer 1

Answer:

self-pollination.

Explanation:

When the pollen of the flower is transferred to the stigma of the same flower, it is called self-pollination. Cross-pollination occurs when pollen is transferred from one flower to another flower on the same plant, or another plant.


Related Questions

please help me!! DUE TOMORROW :(

Answers

Answer:

It’s in the photo, sorry if it’s really messy!

Explanation:

Please ask if you have any questions!

What law of motion corresponds with this statement?

"A rifle kicks."

first law
third law
second law

Answers

Answer:

3rd  lawl

Explanation:

a rifle kick is when you fire a projectile and you feel a force pushing against your hand. Rifles normally have heavier projectiles so there is more force pushing back against you. example, if you were sitting on a spinny chair with wheeles and your friend is sitting on another, and you push each other while on the chair, you will both go backward, but the lighter person will go back more. for every action, there is an equal and opposite reaction

that is the third law, also said as: "When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body."

What are the two elements sand is made of? *

Answers

Answer:

tiny crystals of the mineral quartz, which is made out of silica and oxygen

Well, much of the world's sand is made out of the same stuff, tiny crystals of the mineral quartz, which is made out of silica and oxygen, the two most common elements in Earth's crust.

convert 8.4 • 10^16 molecules of CO2 to moles

Answers

Answer:

0.00000000000000084

Explanation:

A 0.500-g sample containing Na2CO3 plus inert matter is analyzed by adding 50.0 mL of 0.100 M HCl, a slight excess, boiling to remove CO2, and then back-titrating the excess acid with 0.100 M NaOH. If 5.6 mL NaOH is required for the back-titration, what is the percent Na2CO3 in the sample?

Answers

The percentage by mass of Na2CO3 in the sample is 48%.

The equation of the reaction of Na2CO3 with HCl;

Na2CO3(aq) + 2HCl(aq) ------> 2NaCl(aq) + H2O(l) + CO2(g)

Since the HCl is in excess, the excess is back titrated with NaOH as follows;

NaOH (aq) + HCl(aq) ---->NaCl(aq) + H2O(l)

Number of moles of HCl added =  0.100 M × 50/1000 L = 0.005 moles

Number of moles of NaOH added = 5.6/1000 ×  0.100 M = 0.00056 moles

Since the reaction of NaOH and NaOH is 1:1, 0.00056 moles of HCl reacted with excess HCl.

Amount of HCl that reacted with Na2CO3 =  0.005 moles -  0.00056 moles = 0.0044 moles

Now;

1 mole of Na2CO3 reacts with 2 moles of HCl

x moles of Na2CO3 reacts with 0.0044 moles of HCl

x = 1 mole × 0.0044 moles / 2 moles

x = 0.0022 moles

Mass of Na2CO3 reacted = 0.0022 moles × 106 g/mol = 0.24 g

Percentage of Na2CO3  in the sample = 0.24 g/ 0.500-g × 100/1 = 48%

Learn more about back titration: https://brainly.com/question/25485091

KOH(Ac) + HNO3 → KNO3(Ac) + H2O
cual es su reacio

Answers

Answer:

corbonization for dictionnal

Explanation:

correct

Answer:

neutralization reaction forms water and salt , neutralization is the reaction!

Explanation:

Hi what is kinematic??

Answers

Answer:

Kinematics is a branch of physics concerned with the geometrically possible motion of a body or system of bodies without considering the  forces which are involved

Hope it helpsssss.!!!!

How are oxidation-reduction reactions related to how you use energy?​

Answers

Answer:

In oxidation reduction reactions, one species gets reduced by taking on electron(s) and another species gets oxidized by losing electrons. The movement of electrons can be used to do work. ... The electron flow can be run through a wire and these electrons can be used to do work (like run a battery). Hope this helps.

Please write out the balanced chemical equations for the following
reactions.
**Ensure you write the states of the reactants and products.**
• zirconium chloride reacts with scandium dichromate

Answers

Answer: Super idol

Explanation:

chinese malapoks

A compound has the following percentage composition: 40.0% carbon, 6.72% hydrogen, 53.28% oxygen. What is the amount of carbon moles in 200g of the compound?

Answers

Answer:

So we're trying to find the number of carbon moles in the compound. We know that we have 200g of the compound and that 40% of it is Carbon. and 40% of 200 is 80g (change 40% into a decimal and multiply it by 200 and you get 80g)

So 80g of the compound is carbon. In order to find the moles of Carbon, I have to divide the mass by the molar mass of the element.

We know from our periodic table that the molar mass for carbon is 12g/mol

[tex]\frac{80}{12} = 6.67\ mol[/tex]

Therefore we have 6.67 moles of carbon in the compound

Answer:

6.67 moles of carbon in compound

Convert 23 grams of nitrogen dioxide into moles of nitrogen dioxide.

Answers

Answer:

We have to convert the following into moles.

(a) 32 g of oxygen gas = 1 mole

1 gram of oxygen gas = 1/32 mole

Given that 12 g of oxygen gas

No: of moles = given mass / molar mass

= 12 / 32  = 0.375 mole

(b) 18 g of water = 1 mole

1 gram of water = 1/18 mole

Given that 20 g of water

No: of moles = given mass / molar mass

= 20 / 18  = 1.111 mole

(c) 44 g of carbon dioxide = 1 mole

1 gram of CO2 = 1/44 mole

Given that 22 g of carbon dioxide

No: of moles = given mass / molar mass

= 22 / 44 = 0.5 mole

Explanation:

WILL BRAINLIST! NEED ANSWER!

• Why is it important to recycle metals?

A. to maintain sustainability
B. to create more tailings
C. to make sure ore remains renewable
D. to make it easier to extract ore from the ground

Answers

It’s C

Recycling metal is considered an environmentally friendly practice since it eliminates the demand for raw (ore) metal and conserves valuable natural resources

50 PTS!!!!!
What type of chemical reaction is Aerobic Cellular Respiration?

Answers

Answer: During aerobic respiration, catabolic reactions convert larger complex organic molecules into ATP, the chemical that drives most physiological processes in the body.

Explanation:

how many seconds are there in 15 hours show work

Answers

Answer:

54,000 seconds

Explanation:

seconds in 1 hr = 3600

secs in 15 hrs = 3600×15

→ 54000

Which of the following is an example of a scientific model?

The total inches of rainfall during a thunderstorm
A telescope used to study the stars
A computer program that simulates atmospheric conditions
A song about the Grand Canyon

Answers

A computer program that simulates atmosphere conditions :)

A cell phone manufacturer recalled some 50 million lithium batteries installed in cell phones because the batteries were at risk of overheating and exploding. The hazardous waste characteristic of the batteries in this example is __________.

Answers

Answer:

universal waste

hope it helps

Essential Question: How is the scientific method used to answer questions?

Answers

It helps you conduct experiments and use data to find conclusions. You develop a hypothesis and test it in various ways, and modify your hypothesis based on the outcome of your experiment.

patient requires blood transfusion. what is the next thing to do? discuss​

Answers

You have to find the blood type so you don’t cross contaminate

If 2.5 moles of PA react completely, how many
moles of P203 are formed?

Answers

Answer:

For every 2 moles of Na used, 2 moles of NaCl are produced.

Explanation:

Lithium has an atomic mass of 6.941 amu. Lithium has two isotopes. One isotopes has a mass of 6.015 amu with a relative abundance of 7.49%. What is the mass of the other isotopes?

Answers

Explanation:

List the known and unknown quantities and plan the problem. Change each percent abundance into decimal form by dividing by 100. Multiply this value by the atomic mass of that isotope. Add together for each isotope to get the average atomic mass.

Answer:

The atomic mass of second isotope is 7.016

Explanation:

Given data:

Average Atomic mass of lithium = 6.941 amu

Atomic mass of first isotope = 6.015 amu

Relative abundance of first isotope = 7.49%

Abundance of second isotope = ?

Atomic mass of other isotope = ?

Solution:

Total abundance = 100%

100 - 7.49 = 92.51%

percentage abundance of second isotope = 92.51%

Now we will calculate the mass if second isotope.

Average atomic mass of lithium = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

6.941 = (6.015×7.49)+(x×92.51) /100

6.941 =  45.05235 + (x92.51) / 100

6.941×100 = 45.05235 + (x92.51)

694.1 - 45.05235   = (x92.51)

649.04765 = x 92.51

x = 485.583 /92.51

x = 7.016

The atomic mass of second isotope is 7.016

____________________________________________________

(Hope this helps can I pls have brainlist (crown)☺️)

PLEASE HELP 100 POINTS

identify the type of chemical reaction:

C6H12 + 9 O2 ---> 6 CO2 + 2 H2O

Answers

Answer:

Hexenes + Dioxygen = Carbon Dioxide + Water

The reaction type is combustion.

Its reactants are Hexenes - C6H12 and Dioxygen - O2

its products are Carbon Dioxide - CO2 and Water - H2O

Explanation: This was my yesterdays class

NO BOTS PLEASE HELP

How many moles are present in 885.46 grams of sodium bicarbonate NaHCO 3 ) ? Molar mass of sodium bicarbonate ( NaHCO 3 )=84.01 g/mol A. 6.3471 x 10^ 24 moles; 0.9877 * 10 ^ - 2 * m * o * l * e * s C. 10.540 moles D 84.007 moles

Answers

Answer:

C. 10.540 moles

Explanation:

divide grams by molar mass to get moles

how many grams are in 1.35 moles of NH3

Answers

n=m(g)/Mwt (3(1)+1(14))
1.35=m/17
m=17*1.35=22.95 g

How many grams of O2 are reacted when 3.5
mols of P203 are formed?

Answers

1.45 moles of P2O3 contains 1.45 moles of O3 which means 4.35 moles of O:

1.45 × 3 = 4.35 moles of O

Then you can calculate moles of O2 by dividing it by 2:

4.35 moles ÷ 2 = 2.175 moles of O2 needed

An ammonia solution has a pH of 8.25. What is its [OH-]?

Answers

pH + pOH = 14

If pH=8.25, then:

pOH = 14 - 8.25 = 5.75

pOH = -log[OH-]

5.75 = -log[OH-]

-5.75 = log[OH-]

10^(-5.75) = [OH-]

[OH-] = 0,0000017783

[OH-] = 1,78×10^(-6) mol/dm³

Which of the following is a challenge of prosthetic engineering that has been met through tissue engineering?

- Predicting failure
- Biocompatibility
- Strength
- Power

Answers

Answer:

Biocompatibility

Explanation:

I’m a genius and it’s the answer :D

Biocompatibility is a challenge of prosthetic engineering that has been met through tissue engineering. Hence, option B is correct.

What is Biocompatibility?

Biocompatible materials are used in medical devices, such as menstrual cups, stents, or ventilators.

A biocompatibility problem might happen when some of the materials are trapped in the patient's gingival sulcus.

Tissue engineering is an important field of regenerative medicine for tissue repair (after damaged caused by a disease or an accident, for example).

To offer this possibility, stem cells are important tools owing to their capacity to differentiate into a large number of cells according to the stimuli provided.

Hence, option B is correct.

Learn more about Biocompatibility here:

https://brainly.com/question/16037547

#SPJ2

26. Which group in the periodic table contains
an element that can form a blue sulfate
a
compound?
(1) 1
(2)
(3) 11
(4) 17

Answers

Answer:

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Answer:

Option (3) 11

Explanation:

Elements in Group 11 of the periodic table are called Noble Metals.Noble metals have high resistance to oxidation and low chemical reactivity.Noble metal includes Gold (Au), Silver (Ag), Copper (Cu).Copper forms a blue sulfate when reacts with Sulphuric Acid.Formula of Copper Sulfate : CuSO4.Since, Copper belongs to the Group 11 elements of the periodic table hence, option (3) is the right answer.

For more information:

https://brainly.com/question/569321

what is the true of lewis base

Answers

Answer: To answer your question of what is true of a lewis base, it is true that a lewis base donates electron pairs.

Explanation: A Lewis base is any substance, such as the OH- ion, that can donate a pair of nonbonding electrons. A Lewis base is therefore an electron-pair donor.

14. pH value are basic are greater than what number while acids are have a pH less than
this value?

Answers

Answer:

Less than 7 ph value are acidic. Greater than 7 ph value are basic.

can y’all please help me answer?

Answers

Answer:

It really depends on the situation. If you have 1000 elk and 2 wolves, they really would play a better role in killing off elk so that the elk population doesn't get over populated and diseased, causing a major population collapse. But if there were only 10 elk and 50 wolves, the wolves would play a very negative role on the population.

Hope this helps!

Explanation:

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