what are meiospores?​

Answers

Answer 1

The meiospores are haploid spores found in flowers of angiosperms or cones of gymnosperms. The meiospores are of two types: Microspores, the meiospores that give rise to a male gametophyte. Megaspores (or macrospores), the meiospores that give rise to a female gametophyte.


Related Questions

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The food that you eat comes as a result of
Artificial Selection
Adaptations
Natural Selection
Best Fitness

Answers

Answer:

I would say Artificial Selection.

Explanation:

Khan Academy defines Artificial Selection as: "Artificial selection, also called "selective breeding”, is where humans select for desirable traits in agricultural products or animals, rather than leaving the species to evolve and change gradually without human interference, like in natural selection." The other options seem a bit irrelevant to the question.

Answer:

Artificial Selection

Explanation:

Artificial selection involves selecting breeding. This is when farmers breed two plants which bear the largest, sweetest or tastiest fruits or which give high yields of the crops. The same process happens in cows, where farmers select animals to breed, based on high milk yield, or meat production.

However, farmers are becoming to think more differently in order to improve the welfare of animals. Instead of high yields, they are looking to increase disease resistance among animals and plants alike. Banana breeders are looking towards wilder plants with more disease resistance. But all in all, it is artificial selection. It's not bad, as it increases nutritional values for us humans.

The kidneys filter the blood by creating urine. The blood has to travel through these tissue cells to get into the kidney. There are lots of elastic tubes that the soon to be urine travels through while being filtered. The kidneys rely on blood pressure from the heart to move the liquid so lack muscle tissue. The kidneys do not control when you urinate as they simply pass the urine in to your bladder. Explain why the kidneys have each tissue listed below or why they don’t have each tissue.

Muscle Tissue :


Epithelial Tissue :


Nervous Tissue :


Connective Tissue :

Answers

Answer:

Muscle Tissue : The kidneys rely on blood pressure to move, since they lack muscle tissue.

Epithelial Tissue : The kidneys contain simple cuboidal epithelial tissue, which secretes and absorbs. Thus absorbing toxins from blood to be turned to urine.

Nervous Tissue : Kidneys to not contain nervous tissue due to the fact that they do not control when you urinate, but rather simply just pass the urine to the bladder.

Connective Tissue : Kidneys do contain Connective Tissue, called renal fascia, in order to keep the many elastic tubes in place, and a capsule of renal fascia closely envelopes each kidney to protect, and provide support for each kidney inside.

HELP ME PLEASE HELP ME PLEASE I DONT UNDERSTAND
Why are models, such as a model of DNA, important to use in studying science?

A None of these

B Models help scientists understand concepts and processes

C Both of these

D Things may be too big or too small to measure or use practically

Answers

Answer:

option  B

Explanation:

Because scientist wants to how a child is similar some what to its parent .HOW it get same feathers as its parent?

1
1/1 point
The vertebral region is superior to the:

Answers

Answer:

The vertebral region is superior to the sacral region

Explanation:

Superior meaning toward the head of the body, or looking down on sacral region below

Which enzyme is missing in a cell where replication bubbles form and RNA primers are present but no DNA replication takes place?

Answers

The answer is DNA polymerase 3

The missing enzyme is DNA polymerase.

DNA replication is a complex process that involves the duplication of the DNA molecule in a cell. One of the key enzymes involved in this process is DNA polymerase, which catalyzes the formation of new DNA strands by adding complementary nucleotides to the existing template strand.

In a cell where replication bubbles form and RNA primers are present but no DNA replication takes place, the absence of DNA polymerase is the likely cause. DNA polymerase is responsible for elongating the RNA primers and synthesizing the new DNA strand during the replication process. Without this enzyme, the replication process cannot proceed, and DNA replication stalls.

RNA primers are short sequences of RNA that provide a starting point for DNA synthesis during replication. They are necessary because DNA polymerase can only add nucleotides to an existing strand and cannot initiate DNA synthesis on its own. Instead, it requires a primer, which is usually made of RNA, to start the process.

If DNA polymerase is missing or non-functional, the RNA primers cannot be extended, and DNA replication cannot occur. This can lead to various replication errors and the formation of incomplete DNA strands, ultimately affecting the stability and integrity of the cell's genetic material.

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Which type of stem cell are plant cells like?

Answers

Answer:

Stem Cells in Plants. Stem cells function as a source of new cells to grow or replace specialised tissues. ... By creating genetic differences between cells of the same plant, scientists are able to track how the descendants of a single marked cell make up organs and tissues as the plant grows.

Explanation:

Parenchyma cells are the most common plant cells. They are found in the stem, the root, the inside of the leaf, and the pulp of the fruit.

1. Which of the following choices is NOT part of the central nervous system?
a. Brain
c. Spinal cord
b. Ganglion
d. Gray matter

Answers

Answer:

I think it's b I thinkkkk

Acceleration is a change in _____ over a change in time

Answers

Answer:

speed

Explanation:

after you moving something like down a hill it will gradually get faster and faster

Speed

If you move some down a slope it will gradually pick the pace up


How does carbon flow between photosynthesis and cellular respiration

Answers

Answer:

hola soy doragsjgsjgwjwfj Rockwood

Ñame 2 problems that scientists have when classifying species

Answers

Their similarities and differences

7. What is the chemical energy in the cell called?

Answers

Answer:

It is Adenosine Triphosphate (ATP)

Explanation:

Hope it helps

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How do cells in a multicellular organism become specialized to carry out different functions?

Answers

In order for a cell to differentiate into its specialized form and function they manipulate genes and those proteins to be expressed , The primary mechanism by which genes are turned “on” or “off” is through transcription factors.


I need help 7 through 15
I will reward you brainliest

Answers

Answer:

gimme a lil bit of time brb

Explanation:

Does bone marrow cells to have more or less antigens than erythrocytes?

Answers

The bone marrow has more antigens than erythrocytes. You can find erythrocytes in the bone & in the blood.

How do genetics AND the environment affect our traits?

Answers

Um I think the other answer is right too but I also know this is part of it, genetic show our physical traits (how we look) the environment affects how we act and can often change our physical traits. Examples: I’d you are in an environment were you get a lot of sun you will be more tan. If you are in an environment where you would be active our being active is influenced on you then you would be more agile or fit. Etc. hope this helped

Which of the following is not among the kinds of specialised cells in man? a. Reproductive cells b. Nervous tissues cells c. Digestive cells d. Blood cells​

Answers

the answer is the blood cells

The one that is not among the kinds of specialized cells in man is digestive cells, the correct option is c.

What are specialized cells?

Specialized cells are cells that are designed to perform a specific function in the body, such as red blood cells, which are designed to transport oxygen.

Nerve cells assist in the contraction or relaxation of muscles depending on the specific job at hand.

The intestinal epithelium contains a variety of cell types, including enterocytes, Paneth cells, goblet cells, and neuroendocrine cells. The main cell type in intestinal epithelium is enterocytes.

Specialized cells form tissues, tissues form organs, and organs form the systems that make up our bodies. Specialized cells include nerve cells, blood cells, and reproductive cells.

Thus, the correct option is c.

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can someone help me
I really can't understand it everyone is saying stroke SOMEONE HELP me

Answers

Answer:

B. acronym

Explanation:

CVA is the abbreviation for cerebrovascular accident. Cerebrovascular accident is the medical name, but it is also known as a stroke.

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Energy can change from one form to another.
True or False

Answers

TRue

Explanation:

first law of thermodynamics energy can be changed from one from to another

Which two plants produce seeds in the same way?

Answers

Gymnosperms – plants with cones.
Angiosperms – plants with flowers.

PARA TERMINAR
Elaboramos argumentos con base en fuentes científicas y los saberes locales sobre la elección de alimentos propios de nuestra comunidad con alto valor nutricional. Completamos el siguiente cuadro, en el cual encontramos un ejemplo que contiene
información de la FAO sobre el valor nutricional de la quinua en comparación con el de otros granos. Esto nos permitirá reflexionar sobre la elección de alimentos con alto valor nutritivo para cubrir nuestros requerimientos nutricionales.
IDEAS CENTRALES DATOS E INFORMACIÓN
CIENTÍFICA CONSTRUYE TU
ARGUMENTO PROPUESTA DE ELECCIÓN

Consumir alimentos que contengan un alto valor nutricional para evitar la desnutrición, el sobrepeso y la obesidad. La célula necesita energía en forma de ATP para realizar sus funciones vitales. Esta energía la obtenemos de la glucosa presente en los alimentos, por lo que siempre debemos considerarla en
nuestro consumo diario. Las células necesitan carbohidratos, lípidos, proteínas y minerales para realizar sus actividades vitales y mantener el equilibrio homeostático.

Incluir en la alimentación quinua para prevenir la anemia.

Answers

Algunos de los alimentos que presentan un alto valor nutricional incluyen el arenque, la espinaca, arvejas, semillas de calabaza, etc. La energía de la glucosa se convierte en ATP mediante la respiración celular.

La célula necesita macronutrientes y micronutrientes para sobrevivir.

Los macronutrientes son aquellos que aportan energía al ser consumidos, los cuales incluyen lípidos, proteínas y carbohidratos.

Los micronutrientes no aportan energía e incluyen las vitaminas (por ej, la vitamina D) y los minerales (por ejemplo, el hierro).

Los alimentos que presentan un alto valor nutricional son aquellos que contienen un alto contenido de macro y/o micronutrientes (por ejemplo, arenque, espinaca, arvejas, semillas de calabaza, etc).

Los carbohidratos simples como la glucosa aportan energía de rápida utilización mediante la ruptura de sus enlaces químicos, lo cual permite llevar a cabo un grupo de reacciones metabólicas colectivamente referidas como respiración celular.

La respiración celular genera ATP, la moneda de cambio energética que la célula utiliza para crecer, diferenciarse y reproducirse.

Finalmente, la quinoa es un alimento del grupo de los cereales el cual contiene un alto valor energético y nutricional.

Este alimento (quinoa) es una fuente rica en hierro (es por ello que previene la anemia), magnesio, calcio y diferentes tipos de vitaminas (B, C y E).

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Help me. Question is in the picture.

Answers

those are chloroplast. They contain chlorophyll, a green pigment that traps light needed for photosynthesis.

What is the term for heat transfer because of direct contact?

Answers

Answer:

CONDUCTION

Explanation:

Answer: Conduction

Explanation:

WILL MARK BRAINLIEST
What is ridge push?

Answers

Answer:

Ridge push (also known as gravitational sliding) or sliding plate force is a proposed driving force for plate motion in plate tectonics that occurs at mid-ocean ridges as the result of the rigid lithosphere sliding down the hot, raised asthenosphere below mid-ocean ridges. Although it is called ridge push, the term is somewhat misleading; it is actually a body force that acts throughout an ocean plate, not just at the ridge, as a result of gravitational pull. The name comes from earlier models of plate tectonics in which ridge push was primarily ascribed to upwelling magma at mid-ocean ridges pushing or wedging the plates apart. Brainliest?

Explanation:

an analysis of a sample of urine show the presence of blood cells and glucose . accountfor the presence of these substances in the urine

Answers

Answer:

A urinalysis is simply an analysis of the urine. It is a very common test that can be performed in many health care settings, including doctors' offices, urgent care facilities, laboratories, hospitals, and even at home.

A urinalysis test is performed by collecting a urine sample from the patient in a specimen cup. Usually only small amounts (30-60 mL) may be required for urinalysis testing. The sample can be either analyzed in the medical clinic or sent to a laboratory to perform the tests. Urinalysis is abbreviated UA.

Urinalysis is ordered by doctors for a number of reasons, including the following:

1: Routine medical evaluation

2: Assessing particular symptoms

3: Diagnosing medical conditions

4: Monitoring disease progression and response to therapy

5: Pregnancy testing

the fish left their habitat for a nicer environment.
What the plural noun?

Answers

fish- even though it doesn't have an s at the end it's still used as a plural noun.

number of electrons in the outer most shell of an atom determines its what ?

Answers

Answer:

Its reactivity, or tendency to form chemical bonds with other atoms.

Explanation:

Which group it is in

What can you do to help reduce global warming?

Answers

Cut down on your carbon emissions by burning less fossil fuels, so convert almost everything to solar and electric

What would be the effect of the uneven distribution of the Sun’s energy on Earth?

A. The equator and the poles would both be cool.
B. The equator and the poles would both be warm.
C. The equator would be warmer than the poles.
D. The equator would be cooler than the poles.

Answers

If there's uneven distribution of the Sun’s energy on Earth then C. The equator would be warmer than the poles.

=》 The sun's rays will only reach the equator since it is in the middle & the Earth is spherical in shape while the North & the South Poles will become colder with no sunlight. The equator will become warmer.

_____

RainbowSalt2222 ☔

Answer:

The equator would be warm than the poles.

Atoms are divisible and can be broken down into smaller parts called what?

correct answers only:)

Answers

Atoms are divisible into electrons, neutrons, and protons.

7.
What is the ratio of hydrogen atoms to oxygen atoms in a molecule of glucose?
1.1:1 3.3:1
2. 2:1 4. 1:2
help pleaseee

Answers

The answer is 2. 2 Hydrogen atoms to 1 Oxygen atom.
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