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Dead remains of two species A and B were buried. Later only A’s body was found to be a fossil but not B’s give reason.
The reason only species A's body was found as a fossil while species B's was not could be due to several factors, including: Conditions for Fossilization: Fossilization is a rare process that requires specific conditions to occur. These conditions include the rapid burial of the remains, the presencRead more
The reason only species A’s body was found as a fossil while species B’s was not could be due to several factors, including:
Conditions for Fossilization: Fossilization is a rare process that requires specific conditions to occur. These conditions include the rapid burial of the remains, the presence of minerals that can replace the organic material of the body, and protection from destructive forces like erosion and decomposition. If these conditions were more favorable for species A, its body might have become a fossil, while the conditions for species B may not have been ideal.
Differences in Body Composition: Species A and B may have had different body compositions that influenced their likelihood of fossilization. For example, species A might have had hard body parts like shells or bones that are more likely to fossilize, whereas species B might have had soft tissues that are less likely to be preserved as fossils.
Geological Activity: Geological processes, like tectonic movements, can also affect whether fossils are preserved or destroyed. If the area where the remains of species B were buried experienced geological activity that disrupted the layers where the fossils were located, it could prevent the preservation of species B but not affect species A.
Fossil Discovery: Sometimes, fossils are simply not discovered due to factors like limited excavation efforts or the fossils being located in remote or inaccessible areas. It’s possible that the remains of species B have not been found yet, or they may exist but have not been unearthed.
The fossilization of organisms depends on a combination of geological, environmental, and biological factors. These factors can vary between species and locations, leading to differences in the likelihood of fossilization. This is why only species A’s body was found as a fossil, while species B’s was not.
See lessAfter the death of two insects, one of the insect was buried in hot mud and the other is usually found mud. Which of the two is more likely to be preserved better and why?
The insect buried in hot mud is more likely to be preserved better. Hot mud can have a preserving effect due to its high temperature, which can kill bacteria and other microorganisms that cause decay. This heat can help in the process of fossilization, where the soft tissues of the insect can graduaRead more
The insect buried in hot mud is more likely to be preserved better. Hot mud can have a preserving effect due to its high temperature, which can kill bacteria and other microorganisms that cause decay. This heat can help in the process of fossilization, where the soft tissues of the insect can gradually be replaced by minerals over time, leaving behind a well-preserved fossil. On the other hand, insects found in regular mud may still undergo decomposition, as the conditions in regular mud might not be as extreme as in hot mud. However, the exact preservation outcome can depend on various factors, including the specific conditions of the mud and the surrounding environment.
See lessWith the help of an example explain how genes control characteristics or trait.
Genes control characteristics or traits by carrying instructions for specific features in our bodies. For instance, the gene responsible for height carries instructions for how tall or short we'll be. When we inherit these genes from our parents, they combine to determine our traits. If both parentsRead more
Genes control characteristics or traits by carrying instructions for specific features in our bodies. For instance, the gene responsible for height carries instructions for how tall or short we’ll be. When we inherit these genes from our parents, they combine to determine our traits. If both parents pass on tall genes, we’ll likely be tall, but if they pass on short genes, we’ll tend to be shorter. It’s like receiving a set of genetic blueprints that guide the development of our physical features, from eye color to hair type, based on the unique combination of genes we inherit.
See lessMale has 23 pairs of chromosomes and female has 23 pairs of chromosomes. Then why doesn’t an offspring have 46 pairs of chromosomes which is obtained by the fusion of these two eggs.
A human has 23 pairs of chromosomes in their cells, for a total of 46 chromosomes. These pairs are not identical; they carry different genes. When a baby is conceived, it inherits 23 chromosomes from its mother's egg and 23 chromosomes from its father's sperm. So, the baby ends up with 23 + 23 = 46Read more
A human has 23 pairs of chromosomes in their cells, for a total of 46 chromosomes. These pairs are not identical; they carry different genes.
When a baby is conceived, it inherits 23 chromosomes from its mother’s egg and 23 chromosomes from its father’s sperm. So, the baby ends up with 23 + 23 = 46 individual chromosomes.
These chromosomes carry the genetic information that determines the baby’s traits, like eye color, hair type, and other characteristics. They come together during fertilization to create a unique combination of genes that make each person special. So, it’s not 46 pairs of chromosomes; it’s 46 individual chromosomes that combine to form the baby’s genetic makeup.
See less“We cannot pass on to our progeny the experiences and qualifications earned during our life time”. Justify the statement giving reason and examples.
The statement "We cannot pass on to our progeny the experiences and qualifications earned during our lifetime" is true because our experiences and qualifications are not stored in our genes, which are the things we pass on to our children. Instead, they are acquired through learning and personal groRead more
The statement “We cannot pass on to our progeny the experiences and qualifications earned during our lifetime” is true because our experiences and qualifications are not stored in our genes, which are the things we pass on to our children. Instead, they are acquired through learning and personal growth during our lifetime. Here are some reasons and examples to justify this statement:
Genes vs. Experiences: Our genes are like a set of instructions for our body’s physical traits, such as eye color and height. They don’t carry information about our personal experiences or the skills and knowledge we gain during our life.
Learning and Education: We acquire qualifications and knowledge through education and learning from our environment. For example, if you become a skilled musician, it’s because you practiced and learned how to play an instrument, not because your parents passed on musical skills in their genes.
Life Experiences: Our experiences, like traveling to different places, meeting new people, or overcoming challenges, shape our personalities and perspectives. These experiences are unique to each individual and can’t be inherited by our children.
Cultural and Environmental Influence: Our upbringing, culture, and environment play a significant role in shaping who we become. For instance, if you grow up in a particular culture with certain beliefs and customs, those are influenced by your surroundings and upbringing, not your genes.
Qualifications and Careers: The qualifications we earn through schooling and the skills we develop in our careers are the result of our efforts and dedication. For instance, a doctor becomes qualified through years of medical school and training, not because their parents were doctors.
Our genes determine our physical traits, but they don’t carry information about the experiences and qualifications we gain throughout our lives. These experiences and qualifications are unique to each person and are the result of personal effort, education, and environmental influences, which cannot be passed on genetically to our children.
See lessWhat term did Mendel use for genes? Where are the genes located?
Mendel used the term "factors" for genes. He didn't know exactly where they were located inside the cells because that discovery came later, but we now know that genes are found on structures called chromosomes inside the cell's nucleus. Think of chromosomes as tiny packages that hold all the instruRead more
Mendel used the term “factors” for genes. He didn’t know exactly where they were located inside the cells because that discovery came later, but we now know that genes are found on structures called chromosomes inside the cell’s nucleus. Think of chromosomes as tiny packages that hold all the instructions for making living things, like you!
See lessName the substance which on treatment with chlorine yields bleaching powder.
The substance that, on treatment with chlorine, yields bleaching powder is calcium hydroxide [Ca(OH)2]. When chlorine gas is passed over or added to a slurry of calcium hydroxide, the reaction produces calcium hypochlorite [Ca(OCl)2], which is the main component of bleaching powder. The chemical equRead more
The substance that, on treatment with chlorine, yields bleaching powder is calcium hydroxide [Ca(OH)2]. When chlorine gas is passed over or added to a slurry of calcium hydroxide, the reaction produces calcium hypochlorite [Ca(OCl)2], which is the main component of bleaching powder.
The chemical equation for this reaction is:
Ca(OH)2 + 2Cl2 → Ca(OCl)2 + 2H2O
Therefore, the process of producing bleaching powder involves treating calcium hydroxide with chlorine gas.
See lessWhat is the common name of the compound CaOCl2
The common name of the compound CaOCl2 ( calcium hypochlorite) is bleaching powder. Calcium hypochlorite is a white or grayish-white powder or granules that are commonly used as a disinfectant and bleaching agent in various applications, such as in water treatment, swimming pools, and household cleaRead more
The common name of the compound CaOCl2 ( calcium hypochlorite) is bleaching powder. Calcium hypochlorite is a white or grayish-white powder or granules that are commonly used as a disinfectant and bleaching agent in various applications, such as in water treatment, swimming pools, and household cleaning products.
See lessUnder what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?
A farmer may treat the soil of his fields with quick lime (calcium oxide), slaked lime (calcium hydroxide), or chalk (calcium carbonate) under certain soil conditions. If the soil is too acidic, with a low pH, adding lime can help to neutralize the soil and raise the pH to a more suitable level forRead more
A farmer may treat the soil of his fields with quick lime (calcium oxide), slaked lime (calcium hydroxide), or chalk (calcium carbonate) under certain soil conditions.
If the soil is too acidic, with a low pH, adding lime can help to neutralize the soil and raise the pH to a more suitable level for plant growth. This is because lime is alkaline and can react with the excess H+ (aq) ions in the soil, effectively removing them and increasing the soil’s pH.
Additionally, if the soil is deficient in calcium, adding lime can provide a source of this essential nutrient, which is important for plant growth and development. Calcium also helps to improve soil structure by promoting the formation of stable aggregates, which can improve soil aeration, water infiltration, and root penetration.
See lessDo basic solutions also have H+ (aq) ions? If yes, then why are these basic?
Yes, even basic solutions contain some H+ (aq) ions, but the concentration of H+ (aq) ions in basic solutions is relatively low. Basic solutions have a higher concentration of OH- (aq) ions than H+ (aq) ions. This excess of OH- (aq) ions is what makes the solution basic. When a base dissolves in watRead more
Yes, even basic solutions contain some H+ (aq) ions, but the concentration of H+ (aq) ions in basic solutions is relatively low.
Basic solutions have a higher concentration of OH- (aq) ions than H+ (aq) ions. This excess of OH- (aq) ions is what makes the solution basic. When a base dissolves in water, it releases OH- (aq) ions into the solution. These OH- (aq) ions then react with the H+ (aq) ions in the solution, effectively removing them and reducing the overall concentration of H+ (aq) ions in the solution.
The pH scale is a logarithmic scale, which means that a small change in the concentration of H+ (aq) ions can result in a large change in pH. Thus, even a relatively small reduction in the concentration of H+ (aq) ions can cause the pH of the solution to shift from acidic to basic.
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