please help me

Read the passage and examine the photos. Then, suggest two reasons that scientists think developing pollen grains made vascular plants the most successful plants that live on land.


Passage
These mosses are nonvascular plants that grow closely packed together in moist places. The sperm they produce for sexual reproduction must swim to a nearby plant that has an egg that the sperm may fertilize.
Seed plants, such as these conifers, are vascular plants that live in both moist and dry places. For sexual reproduction, conifers produce pollen grains that contain sperm that cannot swim. Conifers produce massive amounts of pollen grains that can be carried by wind.

Answers

Answer 1

Answer:

Vascular plants are successful due to better transportation for water, nutrients and reproduction.

Explanation:

I got it right at school and hope this helps you learn to STUDY.jk

Answer 2

According to scientists, the evolution of pollinators made vascular plants the most successful land plants for two major reasons:

Sperm can be more effectively and widely distributed for sexual reproduction, thanks to pollen grains.Vascular plants can reproduce without the need for a moist environment because they can make pollen grains.

What are Pollen grains?

Plants with seeds, including flowering plants and conifers, produce pollen grains as a component of their reproductive process. They are often carried by wind or pollinators, such as bees, to the female reproductive organs of the same or different plant species, where they can fertilize female gametes (egg cells) and begin the development of seeds.

They carry the male gametes (sperm cells) of the plant. Many plant species depend on pollen grains for successful reproduction, and these grains have evolved a variety of forms, sizes, and surface features that make them easier to disperse and be recognized by pollinators.

Therefore, according to scientists, the evolution of pollinators made vascular plants the most successful land plants for two major reasons:

Sperm can be more effectively and widely distributed for sexual reproduction, thanks to pollen grains.Vascular plants can reproduce without the need for a moist environment because they can make pollen grains.

Learn more about Pollen grains, here:

https://brainly.com/question/12243753

#SPJ2


Related Questions

8
Calcium carbonate (limestone) decomposes when heated.
Caco, + CaO + CO2

b) Calculate the volume of carbon dioxide produced if 10 grames were decomposed.​

Answers

Explanation:

Equation -

CaCO₃ → CaO + CO₂

molecular masses of -

CaCO₃ = 40+12+16×3 = 100 g/mol

CaO = 40+16 = 56 g/mol

CO₂ = 12+16×2 = 44 g/mol

Now,

If 100 g of CaCO₃ is decomposed then it produces 56 g of CaO and 44g of CO₂

Then,

If 1 g of CaCO₃ is decomposed then it produces 56/100g of CaO and 44/100g of CO₂

Now,

Here in question, 10g of CaCO₃ is decomposed

It means, It produces

56/100 × 10 = 56/10 = 5.6 g of CaO and

44/100 × 10 = 44/10 = 4.4 g of CO₂

Now,

we get that 10 g of CaCO₃ on burning produces 4.4 g of CO₂

we need to calculate volume of 4.4 g of CO₂

mole = mass/Gram molecular mass

Then,

mole = 4.4/44 = 0.1

Now,

volume = mole × 22.4 (in Litres)

= 0.1 × 22.4 = 2.24 L

Hence,

2.24 L of CO₂ will be produced when 10g of CaCO₃ decomposed.

A motorcycle starts at rest and moves a distance of 460m .
If it has constant acceleration of 4m55 m/s2 what is its final velocity

Answers

Answer:

The final velocity of the motorcycle is 64.7 m/s

Note: Since the value for the acceleration of the motorcycle is not clear, it is assumed to be 4.55 m/s² in the calculation

Explanation:

Using the equation of motion that contains all the given values in the question: v² = u² + 2as

where v is final velocity; u is initial velocity; a is acceleration; s is horizontal distance

v = ?, u = 0 (since the motorcycle starts from rest), a = 4.55 m/s², s = 460 m

v² = 0² + 2 * 4.55 * 460

v² = 4186

take square root of both sides

v = 64.7 m/s

Therefore, the final velocity of the motorcycle is 64.7 m/s

Colour in acid of red litmus paper​

Answers

Red

Litmus paper turn red when it comes in contact with acid. It turn blue if it come in contact with a base. Neutral litmus paper is purple

Which pair of elements is most likely to form an ionic compound with each other?



sulfur and carbon


barium and chlorine


oxygen and fluorine


calcium and sodium

Answers

Barium and chlorine

Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?

2. What substance is held together by ionic bonds?

3. What metal and nonmetal transferrers electrons?

4. What particle has electrons that are shared unequally?

5. What forms when atoms share electrons by covalent bonds?

6. What two nonmetals share electrons?

7. What charge atom that has lost one or more electrons?

8. What two or metals "pooling" electrons?

a. metallic bond

b. covalent bond

c. anion

d. ionic bond

e. molecule

f. cation

g. compound

h. polar molecule

Answers

Answer:

1. anion

2. compund

3. ionic bond

4. polar molecule

5. molecule

6. covalent bond

7. cation

8. metallic bond

Explanation:

sedimentary rocks that are formed from physical/chemical process within the earth are given the general name of

Answers

Answer:

cementation

Explanation:

part of the rock cycle

The sedimentary rocks that are formed from physical/chemical process within the earth are given the general name of chemical precipitation.

What do you mean by the chemical precipitation ?

Chemical precipitation is the process of turning a liquid into a solid by either making the liquid insoluble or making it very saturated.

Chemical precipitation, which starts when water moving through rock dissolves part of the minerals, creates chemical sedimentary rocks. When the water evaporates, the minerals are finally redeposited or precipitated after being moved away from their source.

A chemical compound that develops when the solution it was dissolved in, often water, evaporates and leaves the compound behind is known as a chemical precipitate.

Thus,Chemical precipitation is the process that gives rise to chemical sedimentary rocks including limestone, halite, and flint.

To learn more about the chemical precipitation, follow the link;

https://brainly.com/question/13859041

#SPJ6

I WILL MARK BRAINLIEST!!!!! !!



(picture included with one question ^^^^^^^)

Answers

Answer:

type D

balance form .b

Explanation:

would dissolving sugar in water be a physical or chemical change

Answers

Answer:

Physical!!!!!

Good Luck!

what is the electron configuration for lithium​

Answers

Answer:

2,1

Explanation:

the electron configuration is 2s1

Which of the following is the best insulator?

Group of answer choices

copper

aluminum

gold

wood

Answers

Answer:

wood

Explanation:

hope this helps! good luck on ur test :)

Answer:

Wood

Explanation:

A candy bar has ____ energy.

A. Kinetic

B. Potential

Answers

Answer:

Potential energy

Explanation:

A candy bar has carbs, sugars, and calories which are potentially going to be used as energy in a body.  

Answer:

B. Potential

Explanation:

Because the candy bar is sitting still.

Why the planets are arranged as they are in our solar system.​

Answers

Answer:

The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest the Sun, only rocky material could withstand the heat when the solar system was young. For this reason, the first four planets—Mercury, Venus, Earth and Mars—are terrestrial planets.

Explanation:

A sample of calcium oxide (CaO) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of CaO does this sample contain?
0.0499
20.0
58.9
157

Answers

Answer:

A)  0.0499

Explanation:

According to the mole concept, 2.80 g of calcium oxide sample  has 0.0499 moles.

What is mole concept?

According to the mole concept,mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

As per the formula for number of moles, which is mass/molar mass

number of moles of calcium oxide is:2.80/56.08=0.0499 moles.

Hence, 2.80 g sample of calcium oxide has 0.0499 moles.

Learn more about mole concept,here:

https://brainly.com/question/12805690

#SPJ6

This occurs when a liquid reaches its boiling point.
evaporation
condensation
vaporization
sublimation
melting
1 points
Save Answd

Answers

Answer:

evaporation

Explanation:

the answer evaporation because when it hits the highest point it evaporation ig?? lol

There is free rotation about the carbons of ethane but not th
of ethane. This is due to the fact that
A. the carbons in ethane are round
Balkenes do not rotate
C. the carbons in ethane are linked by double bonds
D. the carbon in ethane are smaller than those of ethane​

Answers

Answer:

C. the carbons in ethene are linked by double bonds

Explanation:

The reason for the lack of free rotation about the carbons of ethene is that they are linked with with double bonds.

In single bonds afforded with the ethane compound, there is free rotation.

The double bonds confer a special restriction on the rotational potential of the bonded atoms round the carbon.

WILL GIVE 20 POINTS AND MARK BRAINLIEST IF YOU ARE RIGHT!!

Fill in the next verse of the song:

I see a little silhouetto of a man ________________

Answers

Scaramouche, Scaramouche will you do the Fandango?

Convert 5 micrometers to meters

Answers

0.000005 is your answer. Hope this helps!!

Are ionic compounds not carrying a charge?​

Answers

Answer:

yes they carry charges

Speed of 5km. Pls help

Answers

Answer:

It's either A. or B. Im going with B. since the person is walking a constant speed

Explanation:

acceleration is basically when someone or something is increasing in speed

___ V2O5 + ___ CaS ___ CaO + ___ V2S5

Answers

Answer:

3

Explanation:

A student cut out a spiral shape from a piece of tissue paper and hung it from a string over a light bulb. Nothing happened. Next the student turned on the light. After a few seconds, the spiral began to turn above the light. Which of these best explains what happened?​

Answers

Answer:

See explanation

Explanation:

Initially, when the paper is hung over the light bulb, we observe that nothing happens at all.

As time goes on, air surrounding the lamp begins to heat up. Remember that hot air is lighter and less dense than cold air.  Air surrounding the lamp which has now become hotter and less dense rises and pushes on the spiral. This causes the spiral to begin to spin.

. The model shows Earth in several positions relative to the Sun. In which position is it winter in North America?​

Answers

What does the model look like
all the way to the right

The number of elements in one molecule of H2O is

1) 5 elements
2) 5 atoms
3) 2 elements
4) 0 elements

Answers

Answer:

2 elements

Explanation:

There are the two elements that make water

Heeeeeelp will give brainliest
What is the total number of atoms in 36 molecules of glucose C6 (H2O) 6

Answers

Answer:

Explanation:

Glucose has a chemical formula of: C6H12O6 That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms.

Which gas sample contains the most molecules ?

Answers

Answer:

CO2

Explanation:

(a) CO2; according to Avogadro's Hypothesis, they all contain the same number of particles, therefore, the heaviest molecule, CO2 (molar mass = 44), will have the greatest mass. (b) all the same; at the same temperature all gases have the same kinetic energy.

A wave that travels at the speed of light and consists of a combined electric and magnetic effect

Answers

Answer:

Electromagnetic waves

Explanation:

The description given is that of an electromagnetic wave.

Electromagnetic waves are propagated by the vibration of electrical and magnetic fields in a perpendicular direction to one another.

These waves generally travel at the speed of light. They are made up of magnetic and electric fields. They do no require a material medium for their propagationThey can pass through a vacuum.

2. A chemical reaction occurs when substances interact and their atoms
O A. disappear
B. change their size.
C. become new atoms.
O D. rearrange

Answers

Answer:Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Explanation:

2. Which of the following represents the tiny parts within a cell? *

Answers

The answer should be organelles

DNA bases are attached to _____.

sugar molecules
both sugar and phosphate molecules
phosphate molecule

Answers

Answer:

both sugar and phosphate molecules

Answer:

Both sugar and phosphate molecules

Explanation:

Examine the layers of rock. How does layering provide evidence for determining geologic age?

Answers

Well I can’t see the rocks but, to determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones.



Hope this helped! <3

Answer:

the deeper you go down in to the rock the older the fossils get.

Explanation:

layering can provide evidence because the deeper you go down in to the rock the older the fossils get. So when the scientists go in to the rock they can say what animals lived in that time and what animal was the oldest.

Other Questions
what is the vertex of y=x^2 +x-6? Breeders that cross genetically different individuals in hope of producing organisms with multiple desirable traits are using a technique called A. cloning. B. hybridization. C. genetic engineering. D. inbreeding. After the Roman Empire fell some of its cultural achievements lasted for some time and others were lost. Lost achievements include A. Christianity B. Numerals C. trade Help me with 5 & 6 please !! ;) What is the solution to this equation?3x-9 = 12O A. x = 1B. x = 7O c. x = 9O D. x = 63 Plant cells are different from animal cells because they are usually circular in shape, contain ribosomes, and have centrioles? which two processes happen during mitosis?A. the chromosomes happen in a pattern.B. The gametes fuse to form a zygoteC. the nucleus goes through 2 rounds of divisionD. the nucleus divides only once Why did Northern states fight against counting enslaved people as part of state populations? Suppose the demand function for good X is given by: Q_dx = 15-0 5P_x - 0.8 P y where Q_dx is the quantity demanded of good X, P_x is the price of good X, and P_y is the price of good Y, which is related to good X. a. Using the midpoint method, if the price of good Y is $10 and the price of good X decreases from $5 to $3, what is the price elasticity of demand for good X? Is the demand elastic, unitary elastic, or inelastic? b. Good X and Good Y are related as c. Using the midpoint method, if the price of good X is $10 and the price of good increases from $8 to $10, the cross price elasticity of demand is about Find the equation of the line with slope -4 and going through point (3,8) and then convert it to slope intercept form y=Mx+b Please help ? In the diagram below, WXZ is a right angle. If mWXV is eleven more than three times mWXY and mYXV = 139, find mYXZ. Which question could best be tested using this setup? A. Do plants continue to grow in the absence of light? B. Do green plants need light for cell division to occur? C. Do green water plants release a gas in the presence of light? D. Do the roots of water plants absorb minerals in the absence of light? PLEASE HELP I WILL MARK THE BRAINLYNEST IF CORRECT THANK YOU,What was a major issue that in part led to the defeat of Al Smith in the presidential election of 1928?A.) He was unfit for office.B.) He was a Catholic.C.)He appealed to rural dwellers.D.)He was against economic reform. think about a delicious and nutritious food like pudding Sean said that if an item is on sale for 50% off plus an additional 20% off, that is the same as a 70% discount. Megan disagrees. Who is correct? Justify your reasoning. What is the equation of a line that is parallel to the line 4x-2y=10 and goes through the point (3,12) In complete sentences explain what the Grange and the Farmers' Alliance had in common, 1. Qu da fue ayer? (Friday) * Estefani gets out of the pool and the hot concrete burns her feet. What form of heat transfer is occurring between the contrete and Estefani's feet? A sample of oxygen gas occupies a volume of 5.0L at 90kPa pressure. What volume will it occupy at 145kPa?A. 3.10B. 5.10C. 7.0D. 2.5