In the diagram below you can see structures that work together to allow flowering plants to reproduce.
Which answer choice correctly identifies the role of each structure or group of structures?
Answers
Complete question:
Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.
Which answer correctly identifies the function of each structure or group of structures in the reproduction of the plant?
X- pollen production
Y- pollen transfer
Z- production of eggs
X- attraction of pollinators
Y- production of male sex cells
Z- egg production
X- production of eggs
Y- pollen transfer
Z- pollen production
X- production of eggs
Y- pollen production
Z- pollen transfer
Answer:
X- attraction of pollinators
Y- production of male sex cells
Z- egg production
Explanation:
Flowers are reproductive structures in charge of sexual reproduction through the production of seeds.
Z, Feminine reproductive structures:
The central structure is known as a carpel, also recognized as the pistil. The base of the carpel forms the ovary, in which the eggs are produced and where the zygote develops. The opposite extreme of the carpel is the stigma, in the superior part. The stigma is a sticky surface where the pollen grains get attached. The ovary and the stigma are connected by a filament named style.Y, Masculine reproductive structures:
The pollen grains, or male sex cells, are produced in the stamens. The stamen has an anther where the pollen is produced, and a filament that provides support.When mature, pollen grains are driven to the stigma of the same flower or other flowers of the species, where they stick. Once in the stigma, the pollen grains move to the ovary, where they meet the egg and fertilize. The zygote develops in the ovary.
X, External non-reproductive structures:
Flowers also have external structures known as petals and sepals. These structures are modified leaves whose principal function is to protect the flower´s fertile parts and attract pollinators. Petals characterize as having many different colors that make the flower more attractive to insects and some animals. When they visit a flower searching for their recompense, the flower´s pollen grains transfer to the insect´s body. The insect transports the pollen to the next visited flower, leaving it in the stigma of the second flower.
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Help me with this question pleaseeeeeeeeeeeee
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Planets like Jupiter, Neptune, Saturn, and Uranus all are made up of hydrogen and helium.
15 POINTS + BRAINLY the answer selected is wrong
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Answer:
I think it's the second option
Correct me if i'm wrong but i hope i helped! xoxo
I think weirdly, but what i am thinking is that since A has more molecules but it’s at the same level as B, then that means if you give B more molecules, then it will be higher because it requires less.
Sorry if i’m wrong, but hope this helps!
1. Which of the following terms is not correctly paired with its definition?
a. gene: the specific sequence of DNA that codes for one protein
b. monohybrid cross: tracks the inheritance of one trait or gene
c. allele: the alternate forms of a gene
d. phenotype: the actual physical or functional traits of an individual
e. h o m ozygous: the organism has two different alleles for a gene
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Answer:
HEY!
the definition e is wrong.Heterozygous are organisms that has two different alleles for a gene
The others are right.
why is it safer to eat smaller fish with shorter life spans (salmon) than it is to eat lager fish with longer lifespans (tuna)?
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I asked this question yesterday and no one responded so I'm asking it again. BTW this is my bio homework. Thank you
Answers
Answer:
figure 18 is equal to 16
Explanation:
Which of the following is not an example of Homeostasis?
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Answer:
uuuuuuuuuuuuuuuuuuuuuuu
Our understanding of both biology and geology is based on the idea that living things and environments have changed
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Group of answer choices.
A. Only since humans appeared.
B. Repeatedly, rapidly and rarely.
C. Slowly, over billions of years.
D. Very little since Earth began.
Answer:
C. Slowly, over billions of years.
Explanation:
Environmental science can be defined as an interdisciplinary field of science that comprises of chemistry, economics, engineering, zoology, geography, geology, biology, ecology, physics, etc., used for the study and understanding of various environmental factors, issues in relation to human life.
Our understanding of both biology and geology is based on the idea that living things and environments have changed slowly, over billions of years.
This understanding is made possible through the study of the relationship between living organisms and their environment, as well with other forms of life found in the ecosystem.
An ecosystem can be defined as the natural living habitats of both living and non-living organisms. Essential services such as plant pollination, water purification, nutrient cycling etc that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
Basically, scientist have been able to study the remains of various living organisms (fossils) from billions of years ago and discovered that the change between the living organisms and the environment occured slowly.
What natural Resource did the people of Ghana trade in order to obtain salt ?
1. Gold
2. Wood
3. Diamonds
4. Silver
Answers
Answer:
1. gold
(20 characters)
The cellular mechanism that determines the independent assortment of maternal and paternal chromosomes is: Please choose the correct answer from the following choices, and then select the submit answer button. determined by their dominant or recessive inheritance pattern. separation of sister chromatids at anaphase II of meiosis. separation of sister chromatids at anaphase I of meiosis. separation of homologous pairs at anaphase II of meiosis. separation of homologous pairs at anaphase I of meiosis.
Answers
Answer:
separation of homologous pairs at anaphase I of meiosis.
Explanation:
Independent assortment law establishes that the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend or influence the allele of another gene in the same gamete. This random distribution can only be applied to independent genes. These genes segregate independently after crossing over because they are located far away from each other.
When cell division is going on by meiosis, it involves the random and independent segregation of the alleles. During anaphase I (meiosis), the pairs of homologous chromosomes separate independently of each other. Each integrant of the homologous pair migrates to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. The process is as follows.
During metaphase I, homologous pairs together migrate to the equatorial plane, where they randomly aline with their kinetochores facing opposite poles. The random arrangement of tetrads is different in every cell going through the meiosis process. There is no equal alinement between two cells. When tetrads aline in the equatorial plane, there is no predetermined order for each of the homologous chromosomes of each tetrad to face one of the poles and then migrate to it while separating. Any chromosome of the homologous pair might face any of the poles and then migrate to it. Each of the chromosomes has two possibilities for orientation at the plane. During anaphase I, each of the homologous chromosomes migrate to the corresponding pole. When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell. This random order in the equatorial plane is what introduces variation into the gametes. It is almost impossible that two gametes resulting from meiosis will get the same genetic charge.
What was the goal of the EPA Chesapeake Bay Study?
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Answer:
the 1987 Chesapeake bay agreement set the first numeric goals to reduce pollution and restore the bay ecosystem
I really need you to answer this.
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Answer
A
Explanation:
Some animals don't eat a specific pray, and other hunt more than one specie, which means that they are all food for other organisms that are stronger than them.
Why are there more colorblind males than females
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Answer:becuase
Explanation:
what is the pH range of basic substances?
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Answer:
The PH greater than 7 is Basic in nature
hope it helps
What state(s) of matter would you find between points D and E?
Answers
Answer:
gases
Explanation
I also need help with this question
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Answer:
the gastric chief cell
Explanation:
produces pepsin in stomach
How many divisions take
place during meiosis in
order to produce the four
haploid (reproductive)
cells?
A. two
B. one
C. four
Answers
Answer:
two cell divisions happen throughout the overall process, so a result of four haploid cells are produced.
Explanation:
A because it consists of two nuclear divisons resulting in four nuclei that are usually turned into four new haploid daughter cells
Ming and his friends were playing baseball. Ming hit the ball into right field and then ran toward first base. The player in right field picked up the ball and threw it to the player at first base.
After the player in right field threw the ball, Ming and the ball were ______.
A. moving in different directions.
B. moving away from first base.
C. moving toward the player in right field.
D. moving at exactly the same speed.
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Answer:
i think is a but im not sure but i hope it helps.
Explanation:
During a baseball game, a player’s ball hit into the outfield is modeled by the equation h = –16t2 + 65t. A bird flying across the field follows the path modeled by the equation h = 8t + 20. Let t be the time since the ball is hit and h be the height.
Answer:
A) Moving in different directions
Explanation:
mention any two of the functions of proteins in animals
Answers
Explanation:
they are important in the biosyntheses
of hormones and enzymes
it is use in the production of energy
4. The peppered moth lives on the trunks of trees in England. There are two colorations of this moth, light and dark, and both
are eaten by birds. A study found that prior to the Industrial Revolution, the number of light-colored moths found on the
trunks of trees was far greater than the number of dark colored moths. However, after the industrial Revolution, the numbers
were reversed
How would the genetic variation of the moths account for the change in the population sizes of each color? 50.7L152
A. The dark moths were able to kill off many of the light-colored moths, so their numbers increased a lot.
B. Natural selection caused the light species of moth to change into the dark species, allowing them to be better
hidden
C. After the industrial Revolution started, the light colored moths left the area to go live in another, less populated
environment
D. Natural selection favored the dark-colored moths because the factories were producing soot that landed on the
trunks of the trees.
Answers
Answer:
D.
I remember doing a question like this in class while learning about natural selection. The 2 colorations of moth live in a habitat that originally supported the lighter variant due to the light-colored trees. When the industrial revolution began, the soot levels reversed this because the black moths were more camouflaged that the lighter ones. A way we could prove this was the amount of black dresses and dark colored clothing during the time, often due to the fact that lighter colored clothing would turn black by the time the wearer arrived home. The lighter colored moths simply died off a bit because of this.
When the mother has a blood type a and the baby has a blood type B, which man cannot be the father of the baby?
A) sam blood type O
B) cable guy blood type AB
C) the waiter blood type B
D)none
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Answer: blood type O
Explanation:
What do polysaccharides and proteins have in common?
A.They both have a carboxyl group.
B.They are both composed of repeating units.
C.They both have nitrogen.
D.They are both found in DNA.
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Answer:
I think it's B. They both are composed of reapting unit
which region has the second largest ecological footprint?plz help me
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please it's my last question Between which points would the phase change of freezing occur?
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Answer: Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered to or below its freezing point. All known liquids, except helium, freeze when the temperature is low enough.
what happens when an atom has lost an electron comes in contact with an atom that has gained an electron?
Answers
Answer: When an atom that has lost an electron comes in contact with an atom that has gained an electron, usually the the two atoms would attract each other and form a compound. This compound would be ionic since it is governed by ionic bonding.
Explanation:
2. What is the change (mutation) in DNA?
Answers
Answer:
A mutation is a change in a genetic sequence. Mutations include changes as small as the substitution of a single DNA building block, or nucleotide base, with another nucleotide base. Meanwhile, larger mutations can affect many genes on a chromosome. Along with substitutions, mutations can also be caused by insertions, deletions, or duplications of DNA sequences.
Explanation:
Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation. There are also nonhereditary mutations that occur in cells outside of the germ line, which are called somatic mutations. Mutations can be introduced due to mistakes made during DNA replication or due to exposure to mutagens, which are chemical and environmental agents that can introduce mutations in the DNA sequence, such as ultraviolet light. Some mutations do not result in changes in the amino acid sequence of the encoded protein and can be described as silent mutations. Other mutations result in abnormal protein products. Mutations can introduce new alleles into a population of organisms and increase the population's genetic variation.
please help with my biology
Answers
Answer:
Reptiles, like early dinosaurs.
SOMEONE HELP I HAVE 51 ASSIGMENTS DOU BY WEDNES
How do mutations occur in the genetic code? This represents crossing over during meiosis.
a) During DNA replication, the original DNA strand GTC ACA GGC ATC is copied into complementary strand CAG CCG TAG. This is an example of deletion.
b)Mutations can only occur when passed on thorough reproduction. The majority of mutations are the result of exposure to mutagens.
c)A woman who has sickle cell anemia passes this disease on to her offspring. This means that the mutation for sickle cell anemia MUST occur in the woman’s gametes.
d)Mutations can be silent and not affect the organism that has them.
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Answer:
ILLL HELP YOU MARK ME BRAINLIEST AND START SHOWING ME THE QUESTIONS!!!
Explanation:
OKAY!!!!
Errors that occur during meiosis are present in all cells of the body, whereas errors that occur during mitosis may occur in only a small number of cells.
Answers
Answer:
Due to difference in their presence in the body.
Explanation:
Errors that occur during meiosis are present in all cells of the body because meiosis cell division occurs in the sex cells of an organisms so that the errors are effects all the cells of that organism, while on the other hand, errors that occur during mitosis may occur in only a small number of cells because mitosis cell division occurs in the somatic cells so the errors are present in some body cells so we can conclude this errors in meiosis affect all cells whereas errors in mitosis affect less number of cells.
PLEASE HELP!!!!!!!!!!!!!!
WILL GIVE 20 POINTS!!!!!!!!!!!
What does the dotted lines on this cladogram represent?
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Explanation: hope this is helpful :))
Different genotypes always produce different phenotypes. Explain, using an example, why this is NOT true.
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Answer:
Different genotypes don't always produce different phenotypes because though AA & Aa are different genotypes, they are both dominant, therefore having the same phenotype.
Explanation:
Genotype:
AA Aa aa
↓ ↓ ↓
Phenotype:
dominant dominant recessive
(same phenotype) (different phenotype)