What did Darwin discover about plants from his phototropism experiments?

Answers

Answer 1

Answer:

https://www.biology-pages.info/T/Tropisms.html

Explanation:

This link holds all the information you need :D


Related Questions

The diagram below represents the time a cell spends in the two main phases
of the cell cycle. Which section of the diagram represents the phase during
which the cell divides, and what is this phase called?
A. Yellow area: Interphase
B. Yellow area: M phase
C. Blue area: M phase
0 D. Blue area: Interphase

Answers

Answer:

The yellow ares is m-phase

Explanation:

This is where the cell divides into two nucleus.

The blue area in the diagram represents the phase during which the cell divides, and this phase is called the M phase or mitotic phase. Therefore, option C is the correct.

What is mitotic phase?

The mitotic phase, also known as the M phase, is the phase of the cell cycle during which a single cell divides into two identical daughter cells. This process of cell division is essential for growth, development, and repair of tissues in multicellular organisms.

The M phase consists of four stages: prophase, metaphase, anaphase, and telophase. During these stages, the replicated chromosomes condense and align at the metaphase plate, separate and move towards opposite poles of the cell during anaphase, and then decondense and form two separate nuclei during telophase.

The M phase is tightly regulated by a complex network of checkpoint pathways that ensure the accurate segregation of chromosomes and prevent the formation of abnormal cells, which can lead to diseases such as cancer.

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Help will mark brainliest #7,8

Answers

The answers for the question are given below
7.B
8.D

Answer:

7. D

8. D

Explanation:

7. One of the most important functions of iron is the transportation of oxygen to the blood. Iron’s main purpose is to carry oxygen in the hemoglobin of red blood cells throughout your body so your cells can produce energy.

8. A network of tiny capillaries connects the arteries and veins. Though tiny, the capillaries are one of the most important parts of the circulatory system because it’s through them that nutrients and oxygen are delivered to the cells.

during what phase of the cell cycle does the cell prepares for Mitosis?​

Answers

Answer:

interpahse

Explanation:

A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division

Answer:

during interphase......

What does a two direction arrow indicate in a chemical equation

Answers

Answer:

reversible reaction

Explanation:

The double arrow denotes a reversible reaction. The reactants become products and the products can become reactants again using the same process.

If something is 12 grams and has a volume of 1.6 cubic centimeters, how many grams per cubic centimeter.

Answers

Answer: 7.5  grams per cubic centimeter.

Explanation:

We area given that , Mass of something is 12 grams

Volume of that thing is 1.6 cubic centimeters

To find gram per cubic centimeters, we will divide Mass by Volume ( which computes Density)

Number of gram per cubic centimeters = [tex]\dfrac{12}{1.6}[/tex]

Number of gram per cubic centimeters = 7.5

Therefore, 7.5  grams per cubic centimeter. (density of the thing)

Which three statements contain information about cats that is based on scientific knowledge rather than opinion?

Answers

Answer:

First claim '' cats are very smart animal''. Second claim '' cats make bonds with humans''

Why do caves form in Sandy Glacier, but not in larger thicker glaciers?

Answers

Large, permanent caves like those on the Sandy only form when a glacier is thin and the weight of the ice no longer squeezes the caves shut, allowing warm air to flow into the glacier. McGregor and Cartaya have drawn on years of experience mountaineering and caving to safely explore the caves in the Sandy Glacier.

6. What happens when food reaches the stomach?
A. No digestion occurs in the stomach
B. The food moves quickly into the small intestine
C. Juices mix with the food and stomach muscles squeeze it
D. The food is completely digested and is absorbed by tiny blood vessels in the
walls of the stomach​

Answers

Answer:

C) Juices mix with the food and stomach muscles squeeze it.

Explanation:

Gastric juices are added in your stomach to turn your food into small particles that can be gobbled up by cells. Your body contains dangerous level of acids such as HCl but your cell lining in your inner cavities of your stomach prevent acid from burning you form within! Fun :D

So technically the answer is C.

After the food enters your stomach the stomach muscles mix the food and liquid with digestive juices. The stomach slowly empties its contents called chyme into your small intestine

mention 5 ways of preventing STI​

Answers

Answer:

Use latex condoms every time you have sex.

Avoid sharing towels or underclothing.

Wash before and after intercourse.

Get a vaccination for hepatitis B.

Get tested for HIV.

Explanation:

its common sense

Explain how is sunlight distributed across the world

Answers

Answer:

The sun is distibuted across the world due to The environment works in a similar way to a car's heat engine. Winds, precipitation, and evaporation processes in the atmosphere, on the other hand, spread the sun's energy across the Earth. Conduction, convection, and radiation are the methods through which heat energy is transferred.

Explanation:

I took earth science

On Earth, sunlight is scattered and filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat.

I can tell Name two foods each rich in ​

Answers

Answer:

Name two foods rich in: a. Fats b. Starch c. Dietary fiber d. Protein

FatsProteinDietary fibersAvocadosSoybeanBroccoliTofuAnimal meatBarle

porque a los seres vivos se los consideran sistemas abiertos y complejos?

Answers

Explanation:

los seres vivos pueden considerarse sistemas abiertos porque cada ser vivo es un sistema complejo constituido por un conjunto de subsistemas que interactúan y funcionan por un objetivo en común, la conservación y la continuidad de la vida.

What will happen if deforestation continues to destroy the green plants on the
planet?
A. The excess CO2 in the atmosphere will increase global warming.
B. The excess CO2 will be absorbed into the ocean.
C. The remaining plants will cycle all the air.
D. The remaining plants will increase their rate of photosynthesis.

Answers

Answer:

A. The excess CO2 in the atmosphere will increase global warming.

Explanation:

Without enough trees here to process Co2 global warming will increase

wich best describes how mRNA is used by a cell

Answers

Explanation:

where are options??????????????

?Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein ...

Answer: Pretty sure its option D that is the correct answer. Transcription of DNA results in the formation of mRNA. A polypeptide chain is formed when codon sequences of DNA reach the ribosome, delivering DNA sequences to the ribosome.

Explanation:

I can't see the choices but I've done this activity before and that's how I know

explain the absorption of mineral by root hair cell if all mithochondria remove from the cell .​

Answers

Answer:

The root hair cells have carrier proteins in their cell membranes. These pick up the mineral ions and move them across the membrane into the cell against the concentration gradient . Because active transport moves ions against the concentration gradient into the root hair cells, energy is needed.Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.

which African country is famous for chocolate​

Answers

Explanation:

Ivory Coast is famous for chocolate .

hope it is helpful to you

Answer:

Congo is famous for their high quality "Lowua pin cilla" chocolata that's made from organic cocoa beans that were raised using the water from the rivers that are highly infused with natural nutrients.

Define the term:
1.Respiration
2.Transportation ​

Answers

Answer:

1 respiration the chemical process whereby energy rich molecules, example glucose,is chemically broken down to release energy.

Answer:

breathing in and out

Explanation:

the action or process of inhaling and exhaling breathing

movement of humans,animals and goods from one location to another

A sponge actually feeds by
a. acting as a net in a current that sweeps food particles through it.
b. squeezing the spongocoel cavity and sucking debris in and out through the osculum.
c. the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.
d. the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.
e. water the moves gently through the sponge and the amoebocytes that engulf passing food.

Answers

Answer:

c. the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.

Explanation:

Sponges contains the unique feeding system that should be with the animals. Rather of mouths they have the tiny pores that we called as the ostia displayed on the outer walls via water is drawn. Here cells in the sponge walls strainer the food from the water because the water is pumped via the body and the little mouth

So as per the given options, the option c is correct as the collar cells would create the current and the food should be absorbed by the collar cells

If you had a sequence of DNA that was ATGCCATTGC, what would be the complementary DNA Sequence?

Answers

Answer:

TACGGTAACG

Explanation:

T-A

C-G

3characteristics of good respiratory surface​

Answers

thin walls.

a moist inner surface.

a huge combined surface area.

Pick one gland and one hormone and describe the effect on the body

Answers

Answer:

Pituitary Gland, and Luteinizing hormone

Explanation:

The pituitary gland is also known as the "puberty gland". It causes growth, blood pressure, and reproduction. It secretes the Luteinizing hormone which starts sexual development for everyone and controls the menstrual cycle for women.

How do white blood cells protect the body against infections

Answers

Answer:

White blood cells, which are also called leukocytes or white corpuscles, are a cellular blood component that does not include hemoglobin, have a nucleus, are motile, and protect the body from infections and diseases through ingestion of foreign materials and cellular debris, destruction of infectious agents and cancer cells or production of antimicrobials.

Explanation:

There are 4,500 to 11,000 cells in the white blood of a healthy adult person per cubic mm of blood. During the day, fluctuations in the number of white cells take place; lower values during rest and higher during exercise are attained. The quantity of white cells increases abnormally, while the number decreases abnormally, Leukopenia.

Intensive physical activity, seizures, extreme emotional response, pain, pregnancy, labor, and specific conditions such as infections and intoxications may increase the counting of white cells. In reaction to some types of infections or medication, or in conjunction with certain illnesses such as chronic anemia, malnutrition, or allergy, the number may drop.

In a large population of sea stars, half of the individuals possess the red allele and half possess the purple allele. A change in the genome has been introduced, and many of those with purple allele are dying. Therefore, the red allele has become more frequent over time.

Which of the following requirements for the Hardy-Weinberg equilibrium is not being met?

Answers

Answer:

A

Explanation:

All mating must be totally random

Hardy-Weinberg equilibrium is a mathematical model that describes the genetic equilibrium of a population in terms of allele frequencies. It states that allele frequencies in a population remain constant over time in the absence of any evolutionary forces.

What are the requirements of the law ?

In order for this balance to be maintained, five basic requirements must be met: large population size, random mating, no mutations, no migration, and no natural selection. In this case, the starfish population does not satisfy the fifth requirement for no natural selection.

Natural selection occurs as individuals with the purple allele die off, resulting in the red allele becoming more common over time. This type of directional selection causes allele frequencies to deviate from Hardy-Weinberg equilibrium.

Therefore, no natural selection requirement is met in this starfish population. This causes allele frequencies to change over time, leading to a deviation from Hardy-Weinberg equilibrium.

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The endosymbiosis hypothesis is supported by all of the following pieces of evidence except the fact that Group of answer choices chloroplasts reproduce through a splitting process like certain prokaryotes. mitochondria have circular DNA like prokaryotes. chloroplasts have ribosomes like prokaryotes. mitochondria lack ribosomes like prokaryotes.

Answers

Answer:

The correct answer is - mitochondria lack ribosomes like prokaryotes.

Explanation:

The Endosymbiotic Theory says that mitochondria and chloroplast in eukaryotic cells are developed by the once aerobic bacteria that were engulfed by a large anaerobic bacteria.

This theory suggests the origin of eukaryotic cells. Various evidence exists such as mitochondria and chloroplasts contain their own circular DNA like prokaryotic cells and mitochondria and chloroplasts have 70S ribosomes like prokaryotes have.

Flat discs inside chloroplasts that are arranged in stacks are called (2) ______________________ (3) ______________________ are light-absorbing substances that are inside chloroplasts. They absorb light of different (4) ______________________. The green pigment in plants that is essential for photosynthesis is (5) ______________________. Light energy absorbed by this pigment excites (6) ______________________. They are transferred to a(n) (7) ______________________ ______________________. Then they move down an electron transport chain.

Answers

Answer:

Flat discs inside chloroplasts that are arranged in stacks are called (2) __thylakoids_. (3) __Pigments__ are light-absorbing substances that are inside chloroplasts. They absorb light of different (4) __wavelenghs__. The green pigment in plants that is essential for photosynthesis is (5) __Chlorophyll __. Light energy absorbed by this pigment excites (6) ____electrons___. They are transferred to a(n) (7) _Electron Carrier_. Then they move down an electron transport chain.

Explanation:  

The chloroplasts are limited by an outer membrane and an inner one.  In the middle of the two membranes, there is a space left called intermembrane space. In the interior of the inner membrane, there is another space known as the stroma. Within the stroma, there is the third system of membranes, known as thylakoids. They are disk-shaped structures, limited by a membrane, and in their interior, there is a space named thylakoid space.

Thylakoids are arranged as piles, receiving the name of grana. Grana connect to each other by a longer thylakoid membrane. The photosynthetic pigments are placed in the thylakoids, where it occurs light-dependent reactions. These molecules are in charge of light absorption. The most common pigment is chlorophyll, which provides the typical green color of plants. When sunlight reaches the pigments, electrons get excited and move along the electron transport chain, places in the thylakoid membrane.  This process occurs during photosynthesis, while new electrons provided by water molecules replace the excited ones. The final products are oxygen, ATP, and NADPH.  

In the stroma, it takes a place the Calvin cycle.

What would happen if there were no condensation stage in the water cycle?

Answers

answer : there would be no rain.

There would be no rain

Cellulose is found throughout the cell wall of plant cells so cellulose make cells walls Ridgid which indicates that Cellulose is a

Answers

Cellulose makes cell walls rigid, so that would indicate that cellulose is a carbohydrate.

the answer is either B or D​

Answers

Answer:

B

Explanation:

Answer: its b

Explanation: Adenosine triphosphate, also known as ATP, is a molecule that carries energy within cells

Anyone know this problem?

Answers

Answer:yoda

Explanation:

What’s going on , I wrote the right answer it said wrong

Read the passage “ a river for everyone”, then answer two questions below.( the entire passage is in the image above)

1. Are there any limits on what you can change? For example, it would not be realistic to
remove all of the farms. Is there anything that people cannot compromise on?

2. What else would you need to know to come up with a plan of action? Where could you
get that information?

Answers

Answer:

1. Moving the facilities such as crops, lawns, golf courses, and sewers etc would be unrealistic to change because many of the owners would not comprise (costs so much already), yet there are solutions. For example, the town can restrict farmers from poluting the rivers with pesticides as well as fining them and the house developments golf courses and land owners in which the money can be used towards the filteration cost. Another idea would to build cheaper wells to soak up water from different river locations or build barriers around settlements from the river. Another idea would to simply grow natural filters such as using the trees and soil they already had.

2. Of course their are limits such as costs, and figuring out the landscapes of where to build wells, add soil and trees (trees take time to grow) and more that would need plan of action from community leaders in which the people would need to speak with the advisors or the management of the buildings nearby. Without clean water people will get sick or die, and building managers need healthy people to live in their houses and work and grow crops so they'll have to make change.

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