Sexual reproduction in plants involves the fusion of male and female gametes to produce offspring with genetic diversity.
Mechanisms that facilitate sexual reproduction in plants are examples:
1)Pollination and Fertilization: Many plants rely on pollinators, such as bees, butterflies, or birds, to transfer pollen from the male reproductive structures (anthers) to the female reproductive structures (stigma) of flowers.
This process enables the fusion of sperm cells within the pollen with egg cells in the ovules, leading to fertilization.
Examples include flowering plants like roses, sunflowers, and apple trees.
2)Seed Production: After fertilization, the ovule develops into a seed. Seeds contain an embryo, formed by the fertilized egg, enclosed within a protective seed coat.
The mature seeds can disperse and germinate to give rise to new plants.
Various plant groups, including angiosperms (flowering plants) and gymnosperms (conifers and cycads), reproduce sexually through seed production.
3)Alternation of Generations: In plants with a complex life cycle, such as ferns, mosses, and liverworts, sexual reproduction involves an alternation between two distinct generations: the gametophyte and the sporophyte.
The gametophyte generation produces gametes (sperm and eggs) through specialized structures, while the fusion of gametes gives rise to the sporophyte generation, which produces spores.
4)Self-fertilization: Some plants have the ability to self-fertilize, where the pollen from the anther of a flower is transferred to the stigma of the same flower or another flower on the same plant.
This allows for sexual reproduction without the need for external pollinators. Self-fertilization can be seen in plants like tomatoes, peas, and certain grass species.
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Explain the difference between a data table and a graph.
When do you use a data table?
When do you use a graph?
HELP ME!!!
Answer:
A data table is a visual instrument comprised of labeled columns and rows, while a graph is a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles.
They are used for different purposes, depending on the problem
A data table is a visual instrument comprised of labeled columns and rows, while a graph is a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles.
A solid is that form of matter that possesses the following
characteristics __.
a
Particles vibrate around fixed axes
b Definite shape
C
Definite volume
d All of the above
Why would a rough, steep mountain habitat have a higher rate of speciation
than a large, open grasslands habitat? I will make u brainliest
A. The mountain has less variety in the environment.
B. The mountain would cause less fragmentation.
O C. The mountain has wider range of environments.
O D. The mountain has more resources.
SUBMIT
Answer:
I think the correct answer is A
Explanation:
Answer: C. The mountain has wider range of environments.
explain the following type of respiration with diagram in toad:
1..Buccal respiration
2..Cutaneous respiration
3.. Pulmonary respiration
Answer:
1.Buccal pumping is "breathing with one's cheeks": a method of ventilation used in respiration in which the animal moves the floor of its mouth in a rhythmic manner that is externally apparent.
2.Cutaneous respiration, or cutaneous gas exchange, is a form of respiration in which gas exchange occurs across the skin or outer integument of an organism rather than gills or lungs.
3.Pulmonary ventilation is commonly referred to as breathing. It is the process of air flowing into the lungs during inspiration (inhalation) and out of the lungs during expiration (exhalation.
Yan Lang po Sana makatulung
(12.02 MC)
Why are spines considered a physical characteristic adaptation in cactus?
7. Phytoplankton + Shrimp → Snapper → Shark
There are 2,500 kcal available for the 1st trophic
level.
There are kcal available for the 2nd trophic level.
There are kcal available for the 3rd trophic level.
There are 2.5 kcal available for the 4th trophic level.
Fill in the organisms and energy amounts on the
pyramid to the right
8. Use the food chain you created in #3 and complete
Answer:
The first level is 2,500
The second is 250
The third level is 25
and the fourth level is 2.5
Explanation:
The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
Am I supposed to answer #8?
The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.
What is an ecosystem?An ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
Moreover, 7 major ecosystems are forest ecosystem, grassland ecosystem, tundra ecosystem, desert ecosystem, freshwater ecosystem, and marine ecosystem.
Hence, healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. They provide raw materials and resources for medicines and other purposes. They are at the foundation of all civilization and sustain our economies.
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This sunbird has built a nest.
How does this behavior affect the survival of the sunbird population?
O A. It keeps offspring warm as they grow and develop
B. It communicates to the offspring how to reproduce.
O C. It teaches offspring how to build their own nests.
D. It helps attract a mate and produce offspring.
Answer:
your answer is d i think
Explanation:
Answer:
It's A
Explanation:
I got it right, this one is the most logical one since the purpose of a nest is to keep the offspring warm as they grow and develop.
Hope this helps!!
If a heavy box represents a molecule which of the following represents passive transport in a cell
Answer:
um theres nothing there
Explanation:
Answer:
A
Explanation:
bc i got it right on a test :)
**100 POINTS** DNA is an organic molecule that is the code of life. DNA is made up of smaller molecules that form together into two chains. Those chains spiral around each other to form the DNA molecule. Which dichotomous key best describes DNA?
Answer:
Each step is based on genetic traits
Explanation:
so I think u can choose which one it is based on wht i said
How does the DNA in the offspring produced by these methods compare to the DNA in the original
organism?
A) The offspring contain half the original number of chromosomes in each method.
B) The DNA in the offspring is genetically identical to that of the original organism in both methods.
C) The offspring produced by method A contain twice the original number of genes, while those
produced by method B contain half the original number of genes.
The DNA in the offspring is genetically identical to that of the original organism in both methods.
What is DNA?In both methods, the offspring produced would have DNA that is genetically identical to the original organism. This is because both methods mentioned do not involve any form of genetic recombination or mixing of genetic material.
The offspring are produced either through asexual reproduction (method A) or by cloning (method B), where the genetic material is replicated without any changes or variations. As a result, the DNA sequence in the offspring remains identical to that of the origin
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Which was present in the unknown? starch lipids nucleic acids proteins
To test for the presence of starch, you can use iodine solution, which turns blue-black in the presence of starch. Lipids can be identified using a Sudan III or Sudan IV test, where lipids will appear as red or orange-stained spots.
Nucleic acids can be detected through tests like the diphenylamine test or the biuret test.
The diphenylamine test produces a blue color in the presence of DNA, while the biuret test results in a purple color in the presence of RNA.
Proteins can also be identified using the biuret test, as proteins will cause the solution to turn purple.
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Please help me anyone ?!!!! ())).
Rusting of iron and cutting an onion are both examples of chemical changes.
How to explain the chemical changeRusting of iron is a chemical change because it involves a reaction between iron, oxygen from the air, and water. The iron reacts with oxygen to form iron oxide, commonly known as rust. This process is irreversible, and the chemical composition of the iron is altered during rusting.
Cutting an onion is also a chemical change because it involves the disruption of the onion's cell structure and the release of enzymes. When you cut an onion, enzymes stored within the cells are released, reacting with certain compounds to produce sulfur compounds. These compounds are responsible for the pungent smell and the tears that occur when cutting an onion. The cutting process causes a chemical transformation in the onion's composition, making it a chemical change.
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inquiry based pedagogy is being embraced in principle across the globe. in the last decade , it has been supported by an increasing body of research on its effectiveness. illustrate your understanding of the concept of inquiry based pedagogy with a relevant example
Inquiry-based pedagogy involves fostering curiosity and active learning. For example, students investigating real-world environmental issues and proposing solutions.
Inquiry-based pedagogy is a teaching approach that promotes active learning and critical thinking through inquiry and exploration. One relevant example of inquiry-based pedagogy is a science classroom where students are encouraged to design and conduct their own experiments. Instead of simply following instructions, students formulate research questions, develop hypotheses, plan and execute experiments, collect and analyze data, and draw conclusions. For instance, students may investigate the effect of different variables on plant growth by manipulating factors like light, water, or soil composition. This approach allows students to engage in authentic scientific practices, develop problem-solving skills, and gain a deeper understanding of the scientific method. By actively participating in their learning process, students develop a sense of ownership and become more engaged, fostering a love for learning and nurturing their ability to explore and discover knowledge independently.For more such questions on Pedagogy:
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What tonicity term applies to the solution surrounding this cell?
Hypotonic. Since the black molecules can cross the cell membrane and water molecules are able to cross, the solution surrounding the cell has a lower solute concentration compared to the inside, causing water to move into the cell.
To determine the tonicity of the solution surrounding the cell in the given image, we need to consider the movement of water molecules across the cell membrane.
Based on the image, the black molecules can cross the cell membrane, while water molecules are also able to cross. Tonicity refers to the concentration of solutes outside the cell compared to inside the cell.
In this case, if the solution surrounding the cell has a lower concentration of solutes compared to the inside of the cell, water will move into the cell to equalize the concentrations. This would cause the cell to swell or potentially burst.
Therefore, the appropriate tonicity term for this situation is "Hypotonic." A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, resulting in water moving into the cell.
Hence, the correct answer is "Hypotonic."
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there are several types of practical sciences activities. tabulate the characteristics of demonstrations , experiments and practical investigations. information should include the following:the role of the learner during the practical activities, the role of the teacher and the important element of the practical activity to consider ?
Demonstrations:
Learner's Role: Observes and analyzes the demonstration.Teacher's Role: Demonstrates the concept or process.Important Element: Clear explanation by the teacher.Experiments:
Learner's Role: Conducts experiments, manipulates variables, and records data.Teacher's Role: Guides the experimental process.Important Element: Controlled variables for reliable results.Practical Investigations:
Learner's Role: Conducts independent investigations, formulates research questions, and analyzes results.Teacher's Role: Facilitates the investigation process.Important Element: Clear research question to guide the investigation.Here's is the characteristics of demonstrations, experiments, and practical investigations in practical science activities:
Demonstrations:
Learner's Role: Observes the demonstration, paying attention to key concepts and outcomes.Teacher's Role: Demonstrates the concept or process, explaining the steps and providing clear explanations.Important Element: A clear explanation by the teacher is crucial to ensure learners understand the demonstrated concept or process.Experiments:
Learner's Role: Actively conducts experiments, manipulating variables, making observations, and recording data.Teacher's Role: Guides the experimental process, providing instructions, explaining concepts, and ensuring safety.Important Element: Controlled variables are crucial in experiments, as they help maintain consistency and reliability of results.Practical Investigations:
Learner's Role: Conducts independent investigations, formulating research questions, collecting data, and analyzing results.Teacher's Role: Facilitates the investigation process, providing guidance, resources, and support.Important Element: The formulation of a clear research question is crucial in practical investigations, as it guides the entire investigative process and ensures focused outcomes.In summary, demonstrations involve learners observing and teachers explaining, experiments involve learners actively conducting experiments with guidance from teachers, and practical investigations involve learners conducting independent investigations with support from teachers. Clear explanations, controlled variables, and focused research questions are important elements in each activity, respectively.
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Marianne is conducting an experiment on homeostasis in paramecium, which is a type of single-felled organism. Which of these observations provides the strongest evidence of a paramecium maintaining homeostasis
Hello. You did not present the answer options, which makes it difficult for you to receive a specific answer. However, I will try to help you in the best possible way.
One of the most common evidences that a paramecium is maintaining homeostasis is the pumping of water from the vacuoles present in its body.
The paramecium is a protozoan that lives in aquatic environments, mainly those composed of fresh water. The problem with this environment is that water is able to enter the paramecium organism in large quantities and this can promote the disruption of the organism through lysis of the cell. In this case, homeostasis must act quickly and pump water out of the body, through the cell vacuole.
Homeostasis is a regulatory system of the organism, which must promote the balance of the organism, whenever any external or internal factor tries to harm this balance.
1.What is the different between pulmonary circulation and systematic circulation
2. What is the different between aerobic andanaerobic respiration?
3. What is the important of ATP?
4. Write the group blood lack of atigen and antibody respectively?
5. Why the left ventricles thicker than right ventricles?
6. What is the different between disinfectants and antiseptics?
7. Write the life cycle of tape worm?
8. What are the main differences between cholera and typhoid?
9. Write the reason for need classification.
10. Write the genus name and species name of Homosapiens respectively
1. We can see here that the difference between pulmonary circulation and systematic circulation:
Pulmonary circulation is the circulation of blood from the heart to the lungs and back to the heart. While systemic circulation is the circulation of blood from the heart to the rest of the body and back to the heart.
What is aerobic and anaerobic respiration?2. Aerobic respiration is a type of respiration that requires oxygen. While anaerobic respiration is a type of respiration that does not require oxygen.
3. The importance of ATP is that it is used to power all of the body's cells, including muscle cells, brain cells, and heart cells.
4. The group blood lack of atigen and antibody:
Blood group Antibodies Antigens
A Anti-B A
B Anti-A B
AB None A and B
5. The left ventricle is thicker than the right ventricle because it has to pump blood to a larger area of the body.
6. The difference between disinfectants and antiseptics is that:
Disinfectants kill microorganisms on surfaces, while antiseptics kill microorganisms on living tissue.
7. The life cycle of a tapeworm begins when an infected animal sheds tapeworm eggs in its feces. If a human ingests these eggs, they hatch in the small intestine and the larvae burrow through the intestinal wall and travel to the liver, lungs, or brain. In these organs, the larvae mature into adult tapeworms.
8. The main differences between cholera and typhoid are:
Cholera is caused by the bacterium Vibrio cholerae, while typhoid is caused by the bacterium Salmonella typhi. Cholera is spread through contaminated water, while typhoid is spread through contaminated food or water. Cholera symptoms typically develop within hours of infection, while typhoid symptoms typically develop within days of infection.9. The genus name for H0mo sapiens is H0mo and the species name is sapiens.
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Identify the two genes of each parent that would always produce an ear of corn which has all yellow kernels.
Examine the diagram of the nitrogen cycle.
Which option best describes what's happening in the part
labeled 3?
Ammonia, nitrates, and other compounds dissolve in
water and are carried to the oceans.
Human activities add nitrates and other compounds
to Earth's systems.
O Nitrogen is stored in the largest reservoir on Earth.
Nitrogen-fixing bacteria convert nitrogen gas into
compounds usable by plants and animals.
The part labelled 3 shows nitrogen is stored in the largest reservoir on Earth.
What is the nitrogen cycle?The transformation and cycling of nitrogen in various forms throughout ecosystems is referred to as the nitrogen cycle, a biogeochemical process. The nitrogen cycle involves the transformation of nitrogen between various chemical forms so that it is available for use by plants and other creatures.
Nitrogen is a crucial element for the growth and development of living beings.
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Search using the internet on how you can expand or enhance one's knowledge of animal/fish raising.
Answer:
Fish farming involves raising a variety of aquatic animals, such as fish, mollusks and shrimps in an enclosure such as a tank or pond. With the surge in demand for healthy animal protein the demand for fish and fish products is on the rise. Fish farms have the potential to produce fish for home consumption at about $0.90/lb which is a considerable saving when compared to supermarket prices of over $2.00/lb.
The first step for fish farming is to determine what you are going to do with your full-grown fish. You need to know the purpose, whether you are going to keep fish as a pet or for fish meat. This will decide a lot of things like the space requirements, equipment and capital requirements. If you intend to keep fish as a pet for showcase then a small tank or a backyard small fish farm is sufficient. If you intend to put a small fish farm with one or two ponds then also with a little business mindset you can market 1000 to 2000 lb of fish.
This will also require you to set up a business entity and have a business mindset.The costs associated with raising different types of fish varies because different fish need certain temperature water to live. The type of fish also decides the requirement of equipment and the feed cost. There are lots of laws about raising fish and animals, and even more, stringent laws related to raising animals that are going to be consumed as food.
Before starting fish farms or fish hatchery of any size or type it is advisable to check local laws and the need of permits to do so in your area.Normally you will get a license to operate your fish farm for a year which will be renewable. You need to submit the following documents to apply for the license:
Filled in application form
Sketch or aerial map of the facility layout, including dimensions
Copy of fish health certificate
Copy of stocking permit
Letter of a written permission from the landowner (in case if you are not the landowner)
Explanation
(I truly apologize if this answer is too long)
Cellular respiration and photosynthesis are similar in that both require
O A. glucose
B. membrane proteins
C. oxygen
O D. carbon dioxide
UBMIT
12
Answer:
If you can choose 2 your answers would be A.Glucose and C.Oxygen but if not try Oxygen.
Discuss the importance of the change in CO with exercise?
Which part of a seed acts as the food source for the seed as it grows underground?
PLEASE HELP!!!
what protein is part of the basal lamina outside blood vessels, and activates platelets when they stick to it?
-hemoglobin
-collagen
-fibrinogen
-tissue factor
Wave frequency is measured in units
called Hertz (Hz). One Hertz is defined as
one wave per second. Suppose a person
counted 10 waves passing by over a time
period of 1 second. What is the wave
frequency?
Answer:
it will be 10Hz ,because number of waves per second is 10 so we divide with 1second
The wave frequency of a wave which is passing by 10 waves over a time period of 1 second will be 10 Hertz (Hz).
What is Wave frequency?
Wave frequency can be defined as the number of waves which are passing through a fixed point in a given amount of time period. The SI unit for the wave frequency is the hertz (Hz), where 1 hertz is equal to 1 wave which is passing through a fixed point in the time period of 1 second. A higher-frequency wave has generally more energy than a lower-frequency wave with the same magnitude of amplitude.
The wave frequency of a wave which is counted to be 10 waves passing through a point in a time period of 1 second will be 10 Hertz (Hz).
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Please help me ASAP thank you
Why was Copernicus's heliocentric model not believed until Galileo and Kepler provided mo
The model had the moon orbiting Earth.
The model was against religious teachings.
The model could not explain retrograde motion.
The model did not include all eight planets in the solar system.
Answer:
the model was against religious beliefs.
 Which would be worse a change in DNA or a change in mRNA & why
Answer:
i think its DNA
Explanation:
im not sure
Where is the greater solute concentration?
Answer:
outside the cell BH is in the
Answer:
B. Inside the cell
Explanation:
there are more black molecules inside the cell than anywhere else therefore there is a greater concentration inside the cell.
6. What two places might a free-floating DA molecule end up?