Answers
A fern sporophyte consists of steam, leaf, and root, it produces spores, and each has two sets of chromosomes, one from the egg and one from the sperm.
The process of fertilization can be from the same or different gametophytes, and the fertilized eff zygote.
The structure that produces sperm and egg cells is the gametophyte
Answer: B (Gametophyte)
Explanation: Ferns are seedless, vascular plants belonging to the kingdom Pteridophyta. They are one of the most primitive plant type known and shows alternation of generations in their life cycle.
Both asexual (spores, rhizomes, offsets, or stems) and sexual methods of reproduction are known in ferns. Diploid sporophytes undergo meiosis to form haploid spores.
Gametophyte forms a special heart-shaped structure called prothallus below which sex organs are present. Archegonium, the female structure contains a single egg while Antheridium, the male structure, contains flagellated sperms.
Related Questions
who was the first person to start classifying organisms
Answers
Answer: I think it was Carolus Linnaeus
Explanation:
Answer:
That was the great Greek Philosopher Aristotle
If a solid were placed on the moon, would its density change?
Answers
Answer:
no
Explanation:
what is autotroph class 7
answer in 5 sentences
pls I need answer ASAP
Whoever answers will be marked brainliest
Answers
In biology, autotrophs are organisms that can produce their own food using inorganic substances, such as sunlight and carbon dioxide.
How do we explain?Autotrophs are also known as primary producers because they form the base of the food chain by converting energy from the environment into organic compounds.
The topic of autotrophs is typically covered in the study of plant biology in the context of a class 7 curriculum.
The most prevalent kind of autotrophs are plants. They do this through a process known as photosynthesis, which turns carbon dioxide, water, and sunlight into glucose (a sugar) and oxygen.
Chloroplasts, specialized organelles found in plant cells, are where this process occurs.
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which of the following affect dna (shown in picture)
Answers
The statements that can affect the DNA of an individual are:
The amount of food available andGenes passed down from parents. That is option A and F.What is DNA( deoxyribonucleic acid)?Deoxyribonucleic acid is defined as the genetic material that is found in the nucleus of the cells of living things which posses the hereditary information that are being passed from the parents to their offspring.
The change in both the morphology and chemical properties of these molecules can occur due to the following:
Environmental factors such as food,drugs, or exposure to toxins.Inheritance of faulty genes from parents.Radiation.Learn more about DNA here:
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In humans, mid-finger hair is dominant to no mid-finger hair. A woman who has no finger hair wants to marry and have children with a man who does have mid-finger hair. they do not know his genotype though. determine the likelihood that they have a child with no finger hair like their mom. Include all possible options.
Answers
The likelihood that they will have a child with no finger hair like their mother depends on the man's genotype. If the man is heterozygous (Hh), there is a 50% chance that they will have a child with no finger hair. If the man is homozygous dominant (HH) or homozygous recessive (hh), all the offspring will have mid-finger hair.
Dominant Mid-Finger HairIf the woman does not have any mid-finger hair, it means she is homozygous recessive (hh) for this trait. The man, on the other hand, may be homozygous dominant (HH), heterozygous (Hh), or homozygous recessive (hh) for the trait, but we do not know his genotype.
Let's consider all possible options for the man's genotype and the resulting probabilities for their offspring:
Option 1: The man is homozygous dominant (HH) for mid-finger hair.In this case, all the offspring will be heterozygous (Hh) and have mid-finger hair. None of the offspring will have no finger hair like their mother.
Option 2: The man is heterozygous (Hh) for mid-finger hair.In this case, half of the offspring will be heterozygous (Hh) and have mid-finger hair, and the other half will be homozygous recessive (hh) and have no finger hair like their mother.
Option 3: The man is homozygous recessive (hh) for no mid-finger hair.In this case, all the offspring will be heterozygous (Hh) and have mid-finger hair. None of the offspring will have no finger hair like their mother.
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On February 21, a student observes that the Moon cannot be seen in the clear night sky. On what date will the student not be able to see the Moon again in the clear night sky?
Answers
The student will not be able to see the Moon again in the clear night sky on the 22 or 23 of March. This is because if February has 29 days, then the moon will not be able to visualize on the 22 of March, and if February has 28 days, then the moon will not be able to visualize on the 23 of March.
What is the phase known when the moon is not visible?The phase when the moon is not visible is known as the new moon. It may be characterized as when the moon is not visible at night in the clear sky, the moon is called the new moon.
This situation arises once a month after 29.5 days. The phase of the new moon happens monthly when we can not able to visualize the moon in the clear sky as well. This happens because of your view location from the earth and the moon orbits the earth.
Therefore, it is well described above.
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I’m confused on what they talking about so somebody pick A,b,c,d
Answers
Answer:
Im pretty sure that the answer is D
Answer:
I say d
Explanation:
that looks like an octopus and im pretty sure the arrows are pointing at the tentacles and thats how they get around places
The process of combining the parts of a lipid together is called:
Answers
Answer: esterification
Explanation:
i looked it up in my textbook
what feature of a cell prevents water from entering the cell
Answers
Answer:
the cell wall
Explanation:
When the vacuole increases, it’s large surface area adaptation pushes against the cell wall or the plant. The pressure on the cell wall enables less water from entering.
What do food molecules react with during cellular respiration?
oxygen
glucose
carbon dioxide
other food molecules
Answers
Answer:
During cellular respiration, glucose and oxygen are converted into carbon dioxide and water.
Explanation:
Answer:
the answer is oxygen
Explanation:
I took the test
What effect would each type of prevailing wind have on the
land it crosses? I
(a) a prevailing wind coming from the North Pole
(b) a prevailing wind coming from the ocean
Answers
A prevailing wind coming from the North Pole would each type of prevailing wind have on the land it crosses.
What are the three different kinds of prevailing winds?
The trade winds, prevailing westerlies, and polar easterlies are the three predominant wind belts connected with these cells.
Although prevailing winds frequently come from the north sea and provide moisture to the land, they can also bring moisture to the land. There is no moisture or water involved when wind comes from a land location. This means that the winds bring more dry air into the atmosphere, reducing the likelihood of rain.
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What climate condition occurs during El Niño?
dry heat throughout North America
>>warm water moving toward the coast of South America
heavy rain moving toward the coast of South America
flooding throughout North America
Answers
Answer: "warm water moving toward the coast of South America"
Explanation:the change in the temperature of the water in the Pacific ocean contributes to the rise in temperature in the air and on land as well. During El Niño, the temperature in the area of the tropical Pacific ocean increases, so there is usually a surge in wildfires and rainfall.
Answer:
the upper mate is correct
Which arrow on the diagram above represents the cycling of carbon through photosynthesis?
Answers
Answer:
Arrow #1
Explanation:
Arrow #1 is correct. This arrow represents the tree intaking a substance. Trees intake carbon and use it during photosynthesis, the process which provides plants with food.
Arrow #2 is incorrect. The arrow represents something leaving the animal. While animals expel carbon, it is not being cycled through photosynthesis. Animals do not undergo photosynthesis; rather, they use carbon for cellular respiration.
Arrows #3 and #4 are incorrect. These arrows represent something leaving the ground. While carbon is released from soil, the ground does not undergo photosynthesis.
Arrow #5 is incorrect. This arrow represents something leaving the tree. Plants do not expel carbon, they absorb it. This arrow most likely represents oxygen being expelled as a byproduct of photosynthesis.
The percentage of each muscle fiber type in any given muscle of your body is genetically determined. Also, physical activity can cause slight changes in muscle fiber type. Discuss the relative amount of each muscle type in the thigh muscles of Olympic athletes participating in the following events: marathon, weight lifting, 100-meter dash.
Answers
The percentage of muscle fiber types in a muscle is influenced by genetic factors, but physical activity and training can also cause adaptations and slight changes in muscle fiber type composition. The relative amount of each muscle fiber type can vary among individuals and can be different depending on the specific demands of their sport or event.
In the thigh muscles of Olympic athletes participating in different events like the marathon, weightlifting, and the 100-meter dash, we can expect to see variations in the distribution of muscle fiber types.
Marathon runners typically rely heavily on endurance and sustained effort, which requires a high aerobic capacity. Therefore, they often have a higher percentage of slow-twitch (Type I) muscle fibers. Slow-twitch fibers are fatigue-resistant and are well-suited for prolonged, low-intensity activities.
On the other hand, weightlifters need explosive strength and power for their sport. They typically have a higher proportion of fast-twitch (Type II) muscle fibers, particularly Type IIa and Type IIb. These fast-twitch fibers generate high force but fatigue more quickly than slow-twitch fibers. Weightlifters may have a higher proportion of Type IIb fibers, which are specialized for short, intense bursts of power.
Sprinters participating in the 100-meter dash require explosive speed and power. They also have a higher proportion of fast-twitch muscle fibers, including a significant percentage of Type IIb fibers. These fibers can generate rapid force production and are optimized for brief, intense activities.
It's important to note that while there are general trends in muscle fiber type distribution among athletes in specific sports, there can still be individual variation based on genetic factors, training history, and other factors. Athletes' training regimens and genetic predispositions can influence the specific percentages of muscle fiber types observed in their thigh muscles.
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The term nondisjunction refers to which of the following?
Choose all that apply.
-Meiosis disorders
-Cells having too many chromosomes.
-Cells having not enough chromosomes.
-Cells not separating correctly.
-The failure of mitosis
Answers
what would happen if herbivores were removed in a food chain
Answers
kinesin-1 regulates antigen cross-presentation through the scission of tubulations from early endosomes in dendritic cells
Answers
A specialized population of immune cells called dendritic cells (DCs) deliver exogenous antigen (Ag) on MHC class I molecules to trigger CD8 + T cell responses against infections and tumors.
Although the movement of Ag-containing intracellular vesicular compartments is essential for cross-presentation, our understanding of the molecular system that controls vesicular transport is still lacking. Here, we show that animals lacking Kif5b (the heavy chain of kinesin-1) in their DCs display a significant impairment in cross-presentation and consequently a poor in vivo anti-tumor response. We discover that kinesin-1 plays a crucial role in modulating Ag degradation, endosomal pH, and MHC-I recycling in DCs. By enabling the scission of endosomal tubulations, kinesin-1 appears to mechanically control early endosome maturation.
Our findings emphasize kinesin-1's function as a molecular checkpoint that regulates the equilibrium between antigen cross-presentation and degradation.
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How is an E transfer different from an E transformation? *
(5 Points)
Transfers involve the E changing into a different type
Transfers occur when the same form of E is moved to another object
Transformations occur when the same form of Eis moved to another object
Transfers always involve more E at the end of the scenario compared to the beginning of the scenario
Answers
Answer:
Explanation:
One further distinction is that EFTs can only be used to transfer money between bank accounts in your name, whereas Interac e-Transfers can be used to send money to a third party—like the colleague who spotted you lunch money the day you forgot your wallet.
choose all that apply.
The heart ___.
pumps blood to the body.
has four chambers.
is part of the cardiovascular system.
is made of skeletal muscle.
works with the respiratory system.
(you can pick more then one!)
Answers
The person above is right!
14. What does it mean if a rock fractures?
Answers
Answer: When rocks break in response to stress
Explanation: the resulting break is called a fracture. If rocks on one side of the break shift relative to rocks on the other side, then the fracture is a fault.
Answer:
Fractures are mechanical breaks in rocks; they originate from strains that arise from stress concentrations around flaws, heterogeneities, and physical discontinuities. They form in response to lithostatic, tectonic, and thermal stresses and high fluid pressures.
Use the drop downs to determine which symbols would complete the inequality for the domain. −4 ___(a)___ x ___(b)___ 4 (a) (b) On a coordinate plane, a graph of an image with a curve and straight line has 2 points. A closed circle appears at (negative 4, negative 2) and an open circle appears at (4, 5).
Answers
The symbol that will be required to complete the inequality for the domain given, depends on the set of x-values.
What is domain of an inequality?
The value of x, for which the function f(x) is defined is called the domain of equality.
The following symbols are used to reperesnt the inequality of a domain.
less than symbol ( < ).Greater than symbol ( > ).Greater than or equal to symbol ( ≥ ).Less than or equal to symbol ( ≤).Following can be the complete inequality.
- 4 ≤ x ≤ 4 : It represnts -4 and 4 in the set of x values.-4 < x < 4 : It does not represent - 4 and 4 in the set of x values.-4 ≤ x < 4 : It represnt -4 and does not represent 4 in the set of x values.-4 < x ≤ 4 : It does not represnt -4 and represnts 4 in the set of x values.Therefore, the symbol required to complete the inequality fo the given set of domains is dependent of the set of x-values.
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A cladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits.
A scientist discovers a new organism that has paired legs and mammary glands. The offspring of this organism develop within the uterus of the female and are connected to the uterine wall by a placenta during fetal stages.
On the cladogram below, select the species to which the newly discovered organism is most closely related.
Answers
On the cladogram below, the species to lamprey the newly discovered organism.
How do you describe a cladogram?A cladogram is a particular kind of diagram that depicts speculative connections between collections of species. A cladogram looks like a tree with branches growing off of a central trunk. The most significant elements of a cladogram are its root, clades, and nodes. The root is the initial ancestor that all groups that split off from it have in common.
What do the nodes in a cladogram represent?In the cladogram, each node represents a hypothetical or fictitious ancestor that gave rise to two or more daughter taxa. There is a node present at each point where a group of organisms further divides into some distinct groups because the node serves as a marker for the point of divergence.
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The complete question is -
Directions: Select the correct location on the diagram.
A cladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits.
A scientist discovers a new organism that lacks limbs and does not have a true backbone. The organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface.
On the cladogram below, select the species to which the newly discovered organism is most closely related.
What are the erosional and depositional features of a glacier?
Answers
Answer:
Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, arêtes, and horns. Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
Explanation:
Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, arêtes, and horns. Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
Using the following data, calculate the
population growth rate for Zambia:
CBR= 2.9%, Immigration = 1%,
CDR = 2.1%, Emigration = 1%
(Portions of the numeric data are factual.)
HINT: (CBR + Immigration) - (CDR + Emigration) = Population Growth Rate
A. 82%
C. -0.00802%
B. 0.8%
D. 8.025%
Answers
Population growth rate for Zambia is 0.8 % when CBR= 2.9%, Immigration = 1%,CDR = 2.1%, Emigration = 1% are as given above.
What is CBR?The crude birth rate is the number of live births per 1,000 of the population at the midyear census. long explanation The crude birth rate is the number of live births per 1,000 of the expected population at the midyear mark.
Given data;
CBR= 2.9%, Immigration = 1%,
CDR = 2.1%, Emigration = 1%
Now to find the Population Growth Rate use the given formula;
(CBR + Immigration) - (CDR + Emigration) = Population Growth Rate
Population Growth Rate= (CBR + Immigration) - (CDR + Emigration)
the current population of Zambia =18.92 million
now
CBR= 2.9% of 18.92 million=548680
CDR = 2.1% of 18.92 million=397320
Immigration = 1% of 18.92 million=189200
Emigration = 1% of 18.92 million=189200
now putting the values on eq.
Population Growth Rate= (CBR + Immigration) - (CDR + Emigration)
Population Growth Rate= (548680 +189200)-(397320 + 189200 )
Population Growth Rate=151360 *100/18.92 million
Population Growth Rate=0.8%
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Properties and structure of water?
Answers
Answer:
properties: high surface tension
high latent heat of vaporization
cohesion and adhesion
high specific heat capacity
excellent solvent
it is polar
structure:
two hydrogen and one oxygen bonded covalently at 109⁰, water uses hydrogen bonds to bond with other water.
Duchenne Muscular Dystrophy (DMD) is an X-linked recessive trait that causes muscular weakness, deterioration of muscle tissue, and loss of coordination. The allele for DMD is represented by Xd and the normal allele is represented by XD . Neither parent has DMD, but both of their sons express the trait. What are the genotypes of the parents?
Answers
Answer:
The correct answer is - XDXd and XD Y
Explanation:
Sex-linked disorders are the disorders that are expressed only when there is two copy of the mutated allele or have not masked by the dominant allele of the gene. In DMD, the dominant allele is XD and the mutated allele is Xd. To express it there are the following genotype possible-
in women XdXd, and in men XdY, so these two genotypes are not possible for the parents in this case. If a mutated allele is present with the dominant allele it will be considered as carrier women but diseased will not be found in them.
So the correct genotype would be
mother: XDXd ( a carrier woman)
father : XDY (normal man)
Explain the limitation binomial nominclature (15 marks)
Answers
Answer:
- Binomial nomenclature is a widely accepted naming system, which is used in the naming of living things. Multiple native names make it extraordinarily tough to establish an organism globally and maintain an observation of the variety of species. Thus, it creates quite a lot of confusion. To eliminate this confusion, a normal protocol came up. According to it, every organism would have one scientific title which might be utilized by everybody to establish an organism.
What is binomial nomenclature?
Binomial Nomenclature follows a universally accepted naming system, which is used to provide a scientific name to a known organism.
Binomial Nomenclature also known as the binary nomenclature.
It uses two-terms during the nomenclature of a specie (plants, animals, and living organisms) that is why it called two-term naming system.
The scientific name of an organism or binomial nomenclature consists of two words, such as the generic epithet and describes the genus and the specific epithet and refers to the species of the organism.
Both of this term is written in italic and the genus name is capitalized.
Binomial nomenclature was given by Swedish botanist and physician Carl Linnaeus. He also called the founder of modern taxonomy.
Carl Linnaeus described and classified thousands of species of plants and animals in his book Systema Naturae.In this technique, there are particular guidelines that are followed while naming organisms. This normal algorithm is relevant to plants and animals whereas giving them distinctive names inside a given system.There are two worldwide codes such as the International Code of Botanical Nomenclature (ICBN) deal with the biological nomenclature for plants and the International Code of Zoological Nomenclature (ICZN) deal with the biological nomenclature of animals.
These two codes agreed upon by all of the biologists over the world for the naming protocol. These codes ensure that every organism will get a selected identity and that identity is globally recognized.
Summary of the limitation binomial nominclature:
- Some of the main drawbacks of binomial nomenclature are: If two or more names are actually in use in compliance with the priority rule, the appropriate name will be used first and the other names will end up being synonyms because authenticity is synonymous with the senior.
please help me. Pleae
Answers
Thus, the organs functioning of the nervous system regulates a variety of functions, including the capacity to move, breathe, observe, The nerve cell, or neuron, is the building block of the neurological system.
What role does the nervous system play?The spinal cord, brain, plus an intricate web of neurons make up the nervous system. All information from every component of the body must be sent, received, and interpreted by this system. The nervous system controls and organises the operation of the internal organs and reacts to alterations in the environment outside the body.
What are the nervous system's two primary purposes?Sensation and motor responses are both produced by the nervous system in response to information it receives about our environment. The nervous system can be broken down into sections that control movement (motor functions) and sensation (sensory functions).
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Which of the following diagrams illustrates the position of t3
he sun an earth on the longest day of the year i in the northern hemisphere
Answers
Answer:
please provide clean image.......
Explanation:
in your desktop ️ I can't able to see anything....
HELP THANK YOU SO MUCH!
Kali designs a set-up to investigate germinating seeds. She fills a jar with seeds that have soaked in water.
In the jar she places a beaker that contains a solution of bromothymol blue. Bromothymol blue turns green in the presence of carbon dioxide .
She will record observations on Day 1, wait 24 hours, and record again on Day 2
Day 1 - Bromothymol blue solution blue. Soaked Seeds.
Day 2 - Bromothymol blue solution is green. Germinating seeds.
Which question has Kali MOST LIKELY ASKED as she set up this investigation?
A. Do germinating peas release oxygen in the process of respiration?
B. Do germinating peas release water in the process of photosynthesis?
C. Do germinating peas absorb water in the process of photosynthesis?
D. Do germinating peas release carbon dioxide in the process of respiration?
Answers
The increase in water level shows that respiration in the conical flask is causing gram seeds to germinate, which releases carbon dioxide. Thus, option D is correct.
What gases are released by germinating peas?The KOH solution in the little test tube absorbs the CO2 that the germination of the seeds in the conical flask releases during breathing.
As a result, a small vacuum is created inside the flask, forcing the water up the delivery tube. It demonstrates that seeds that are germination carbon dioxide during respiration.
By mixing glucose with oxygen from the air, organisms create energy during the process of respiration. Glucose and oxygen are converted into energy and carbon dioxide during cellular respiration.
During the process of cellular respiration, carbon dioxide is released into the atmosphere.
Therefore, germinating peas release carbon dioxide in the process of respiration.
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