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3 years ago

What are two ways pollen can travel from one plant to another during cross-pollination?

SAT

2 answers:

Whitepunk [10]3 years ago

7 0

Pollen comes from the anther which is the male part. the male part is carried to the sigma.

Rzqust [24]3 years ago

3 0

Pollen comes from the anther which is the male part, the male part is carried to the sigma Wich is the female part. would u like to know how fertilization happens?

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Which of the following programs provides high quality training and safety, union agreements, hundreds of hours of on-the-job tra

horrorfan [7]

Hundreds of hours of on the job training

3 0

3 years ago

Read 2 more answers

Number each material and sort the items in order from lowest (1) to highest (7) Density

Dafna1 [17]

Answer: copper > chalk > flour > talcum powder > dry beans.

Explanation:

Density is the compactness of given object.

Basically, it is mass per volume.

copper has the most density

chalk has lesser density than copper.

flour has lesser density than copper and chalk.

talcum powder has lesser density than copper, chalk and flour.

dry beans have lesser density than copper, chalk, and flour.

So, it becomes,

copper > chalk > flour > talcum powder > dry beans.

6 0

4 years ago

A beam of white light goes from air into the water droplet at an incidence angle of 36.2 degrees. what is the angle between the

torisob [31]

A beam of white light goes from air into the water droplet at an incidence angle. The angle between the red (660 nm) and violet (410 nm) parts of the refracted light is 0.19°.

<h3>What is white light?</h3>

The white light is the ray coming directly from the Sun. When it strikes any glass object, an spectrum of colors with different wavelength is formed.

Given is the angle of incidence, i = 36.2°, the refractive index of water for red light is 1.331 , the refractive index of water for violet light is 1.340 and refractive index of air is 1.

Using the Snell's law, the angle of refraction of red light will be

1.331 x sin r(R) = 1 x sin 36.2

r(R) = 26.342°

Using the Snell's law, the angle of refraction of violet light will be

1.340 x sin r(R) = 1 x sin 36.2

r (V) = 26.152°

Difference in the angle of refraction of red and violet light is

r(R) - r (V) = 26.342 - 26.152 = 0.19°

Thus, the angle between the red (660 nm) and violet (410 nm) parts of the refracted light is 0.19°.

Learn more about white light.

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5 0

2 years ago

Using the following vocabulary describe in spanish what you do in your spare time.

Sliva [168]

When you have to write about what you do in your spare time, you need to write about your hobbies.

Hobbies are activities that you do in your spare time just because you like them and not because you are obligated to do them.

For instance, these are some examples of sentences about what I do in my spare time:

Juego al tenis en mi tiempo libre.
Me gusta escuchar música en mi tiempo libre.
Cuando tengo tiempo libre, me junto con mis amigos.

It's important to decide what you want to write about and once you write them, check if they are grammatically correct.

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3 0

2 years ago

What are the coefficients for the binomial expansion of (a b)3? 1, 4, 6, 4, 1 1, 1 1, 2, 1 1, 3, 3, 1

Advocard [28]

The coefficients for the binomial expansion of (a + b)³ are 1, 3, 3, 1.

We have,

The binomial expansion (a + b)³,

So,

Now,

We know that,

Formula for binomial expansion,

i.e.

(u + v)ⁿ = ⁿC₀ · uⁿ · v⁰ + ⁿC₁ · uⁿ⁻¹ · v¹ + ⁿC₂ · uⁿ⁻² · v² + ⁿC₃ · uⁿ⁻³ · v³

Now,

According to the question,

Here,

u = a,

v = b,

And, n =3

Now,

Putting values,

i.e.

(a + b)³ = ³C₀ · a³ · b⁰ + ³C₁ · a³⁻¹ · b¹ + ³C₂ · a³⁻² · b² + ³C₃ · a³⁻³ · b³

We get,

(a + b)³ = ³C₀ · a³ · b⁰ + ³C₁ · a² · b¹ + ³C₂ · a¹ · b² + ³C₃ · a⁰ · b³

Now,

Using combination formula,

$^{n} C_{r} = \frac{n!}{r!(n-r)!}$

On solving we get,

(a + b)³ = a³ + 3 a² b + 3 a b² + b³

So,

Now,

The coefficients of :

a³ = 1,

3a²b = 3,

3ab² = 3,

b³ = 1,

So,

The coefficients of the given binomial expansion are 1, 3, 3, 1.

Hence we can say that the coefficients for the binomial expansion of (a + b)³ are 1, 3, 3, 1.

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4 0

2 years ago