The cost of electrical energy is typically given in terms of the cost per unit of energy, which is measured in kilowatt-hours (kWh). In this case, the cost is Rs. 3.50 per 1.0 kWh. The generator produces energy at its maximum power of 2.0 kW for 3 hours. To find the total energy produced by the geneRead more
The cost of electrical energy is typically given in terms of the cost per unit of energy, which is measured in kilowatt-hours (kWh). In this case, the cost is Rs. 3.50 per 1.0 kWh.
The generator produces energy at its maximum power of 2.0 kW for 3 hours. To find the total energy produced by the generator, you can use the formula:
Energy (in kWh) = Power (in kW) x Time (in hours)
So, for the generator:
Energy (in kWh) = 2.0kW × 3hours
Energy (in kWh) =6.0kWh
Now, to find the cost of this energy from the Main Electricity Board, you can use the given cost per kWh:
Cost = Energy (in kWh) × Cost per kWh
Cost = 6.0kWh×Rs.3.50/kWh
Cost = Rs.21.00
Therefore, it would cost Rs. 21.00 to buy the same amount of energy from the Main Electricity Board that the generator produces at its maximum power for 3 hours.
When the F1 plants (RrYy) are self-pollinated, the possible combinations of alleles segregating during gamete formation can be determined using the principles of Mendelian genetics. The key is to consider the segregation of alleles during both the formation of gametes and their subsequent combinatioRead more
When the F1 plants (RrYy) are self-pollinated, the possible combinations of alleles segregating during gamete formation can be determined using the principles of Mendelian genetics. The key is to consider the segregation of alleles during both the formation of gametes and their subsequent combination during fertilization.
The possible combinations of alleles in the F2 generation can be obtained through the multiplication of the individual allele combinations for each gene. The alleles segregate independently during gamete formation, following Mendel’s law of independent assortment.
The genotype of the F1 plants (RrYy) can produce gametes with the following combinations:
• RY
• Ry
• rY
• ry
These gametes can then combine in various ways during fertilization. The possible genotypes in the F2 generation, along with their phenotypic expressions, are as follows:
1. RRYY (round yellow)
2. RRYy (round yellow)
3. RrYY (round yellow)
4. RrYy (round yellow)
5. RRyy (round green)
6. Rryy (round green)
7. rrYY (wrinkled yellow)
8. rrYy (wrinkled yellow)
9. rryy (wrinkled green)
So, there are 9 possible combinations of characters in the F2 generation.
To determine the ratio of these combinations, you can use a Punnett square or the multiplication rule. If you cross RrYy x RrYy, you get a 9:3:3:1 ratio for the phenotypes (round yellow: round green: wrinkled yellow: wrinkled green). This is based on the fact that each gene segregates independently, and the combination of alleles for one gene does not influence the combination for the other gene.
Now, if a total of 160 seeds are produced in the F2 generation, you can calculate the expected number of seeds for each phenotype by multiplying the ratio by the total number of seeds:
• Round Yellow (RY): 9/16 * 160 = 90 seeds
• Round Green (Ry): 3/16 * 160 = 30 seeds
• Wrinkled Yellow (rY): 3/16 * 160 = 30 seeds
• Wrinkled Green (ry): 1/16 * 160 = 10 seeds
So, you would expect 90 round yellow seeds, 30 round green seeds, 30 wrinkled yellow seeds, and 10 wrinkled green seeds in the F2 generation.
A) Four isomers are possible for the compound with the molecular formula C4H8. B) C4H8 and C5H10 are homologues as they differ in: ● “- CH2-” ● differ in 14u molecular mass ● Same functional group ● Same general formula
A) Four isomers are possible for the compound with the molecular formula C4H8.
B) C4H8 and C5H10 are homologues as they differ in:
● “- CH2-”
● differ in 14u molecular mass
● Same functional group
● Same general formula
The use of DDT (dichlorodiphenyltrichloroethane) to control mosquito breeding in a lake can have profound effects on the trophic levels in the associated food chain. DDT is a pesticide that can bioaccumulate and biomagnify through food chains, impacting various organisms. Let's analyze the potentialRead more
The use of DDT (dichlorodiphenyltrichloroethane) to control mosquito breeding in a lake can have profound effects on the trophic levels in the associated food chain. DDT is a pesticide that can bioaccumulate and biomagnify through food chains, impacting various organisms.
Let’s analyze the potential effects on each trophic level in the given food chain:
1. Plankton: DDT can enter the aquatic environment and affect plankton, which are primary producers. Plankton may absorb DDT from the water, leading to changes in their populations.
2. Small Fish: Small fish consume plankton and may accumulate DDT as they feed. The bioaccumulation of DDT in smaller organisms can lead to higher concentrations in organisms at higher trophic levels.
3.Large Fish: Large fish that prey on smaller fish can accumulate even higher levels of DDT due to biomagnification. DDT is known to persist in fatty tissues, and as larger predators consume numerous smaller organisms, the concentration of DDT can increase significantly.
4. Hawk: If the lake supports a population of fish that are contaminated with DDT, hawks (or other birds of prey) that feed on these fish may be exposed to high levels of the pesticide. Birds, especially raptors, can be particularly sensitive to DDT and its breakdown products.
5. Aquatic Environment: DDT can have detrimental effects on the overall aquatic environment. It can disrupt the balance of the ecosystem by affecting non-target organisms and reducing biodiversity. The long-term use of DDT can have cascading effects on various trophic levels, potentially leading to imbalances in the ecosystem.
Justification:
• Bioaccumulation: DDT tends to accumulate in the fatty tissues of organisms. As smaller organisms with lower trophic levels absorb DDT, the concentration increases in their tissues.
• Biomagnification: The process of biomagnification occurs as DDT moves up the food chain. Predators at higher trophic levels accumulate higher concentrations of the pesticide because they consume multiple contaminated organisms.
• Impact on Birds of Prey: DDT is notorious for its role in thinning eggshells of birds, particularly raptors like hawks. This thinning can lead to reproductive failures and population decline in these species.
In summary, the use of DDT in a lake can have far-reaching consequences on the trophic levels, potentially disrupting the balance of the ecosystem and posing risks to the health of organisms at higher trophic levels, especially birds of prey.
Trait Y which exists in 70% (larger fraction) of the population, is likely to have arisen earlier because in asexual reproduction, identical copies of DNA are produced and variations do not occur. New traits come in the population due to sudden mutation and then are inherited. 70 % of the populationRead more
Trait Y which exists in 70% (larger fraction) of the population, is likely to have arisen earlier because in asexual reproduction, identical copies of DNA are produced and variations do not occur.
New traits come in the population due to sudden mutation and then are inherited. 70 % of the population with trait Y is likely to have been replicating that trait for a longer period than 5 % of population with trait X.
It would cost a man Rs. 3.50 to buy 1.0 kW h of electrical energy from the Main Electricity Board. His generator has a maximum power of 2.0 kW. The generator produces energy at this maximum power for 3 hours. Calculate how much it would cost to buy the same amount of energy from the Main Electricity Board.
The cost of electrical energy is typically given in terms of the cost per unit of energy, which is measured in kilowatt-hours (kWh). In this case, the cost is Rs. 3.50 per 1.0 kWh. The generator produces energy at its maximum power of 2.0 kW for 3 hours. To find the total energy produced by the geneRead more
The cost of electrical energy is typically given in terms of the cost per unit of energy, which is measured in kilowatt-hours (kWh). In this case, the cost is Rs. 3.50 per 1.0 kWh.
The generator produces energy at its maximum power of 2.0 kW for 3 hours. To find the total energy produced by the generator, you can use the formula:
Energy (in kWh) = Power (in kW) x Time (in hours)
So, for the generator:
See lessEnergy (in kWh) = 2.0kW × 3hours
Energy (in kWh) =6.0kWh
Now, to find the cost of this energy from the Main Electricity Board, you can use the given cost per kWh:
Cost = Energy (in kWh) × Cost per kWh
Cost = 6.0kWh×Rs.3.50/kWh
Cost = Rs.21.00
Therefore, it would cost Rs. 21.00 to buy the same amount of energy from the Main Electricity Board that the generator produces at its maximum power for 3 hours.
Two pea plants – one with round yellow seeds (RRYY) and another with wrinkled green (rryy) seeds produce F1 progeny that have round, yellow (RrYy) seeds. When F1 plants are self-pollinated, which new combination of characters is expected in F2 progeny? How many seeds with these new combinations of characters will be produced when a total 160 seeds are produced in F2 generation? Explain with reason.
When the F1 plants (RrYy) are self-pollinated, the possible combinations of alleles segregating during gamete formation can be determined using the principles of Mendelian genetics. The key is to consider the segregation of alleles during both the formation of gametes and their subsequent combinatioRead more
When the F1 plants (RrYy) are self-pollinated, the possible combinations of alleles segregating during gamete formation can be determined using the principles of Mendelian genetics. The key is to consider the segregation of alleles during both the formation of gametes and their subsequent combination during fertilization.
The possible combinations of alleles in the F2 generation can be obtained through the multiplication of the individual allele combinations for each gene. The alleles segregate independently during gamete formation, following Mendel’s law of independent assortment.
The genotype of the F1 plants (RrYy) can produce gametes with the following combinations:
• RY
• Ry
• rY
• ry
These gametes can then combine in various ways during fertilization. The possible genotypes in the F2 generation, along with their phenotypic expressions, are as follows:
1. RRYY (round yellow)
2. RRYy (round yellow)
3. RrYY (round yellow)
4. RrYy (round yellow)
5. RRyy (round green)
6. Rryy (round green)
7. rrYY (wrinkled yellow)
8. rrYy (wrinkled yellow)
9. rryy (wrinkled green)
So, there are 9 possible combinations of characters in the F2 generation.
See lessTo determine the ratio of these combinations, you can use a Punnett square or the multiplication rule. If you cross RrYy x RrYy, you get a 9:3:3:1 ratio for the phenotypes (round yellow: round green: wrinkled yellow: wrinkled green). This is based on the fact that each gene segregates independently, and the combination of alleles for one gene does not influence the combination for the other gene.
Now, if a total of 160 seeds are produced in the F2 generation, you can calculate the expected number of seeds for each phenotype by multiplying the ratio by the total number of seeds:
• Round Yellow (RY): 9/16 * 160 = 90 seeds
• Round Green (Ry): 3/16 * 160 = 30 seeds
• Wrinkled Yellow (rY): 3/16 * 160 = 30 seeds
• Wrinkled Green (ry): 1/16 * 160 = 10 seeds
So, you would expect 90 round yellow seeds, 30 round green seeds, 30 wrinkled yellow seeds, and 10 wrinkled green seeds in the F2 generation.
How many isomers are possible for the compound with the molecular formula C4H8? Draw the electron dot structure of branched chain isomer. How will you prove that C4H8 and C5H10 are homologues?
A) Four isomers are possible for the compound with the molecular formula C4H8. B) C4H8 and C5H10 are homologues as they differ in: ● “- CH2-” ● differ in 14u molecular mass ● Same functional group ● Same general formula
A) Four isomers are possible for the compound with the molecular formula C4H8.
See lessB) C4H8 and C5H10 are homologues as they differ in:
● “- CH2-”
● differ in 14u molecular mass
● Same functional group
● Same general formula
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.
The use of DDT (dichlorodiphenyltrichloroethane) to control mosquito breeding in a lake can have profound effects on the trophic levels in the associated food chain. DDT is a pesticide that can bioaccumulate and biomagnify through food chains, impacting various organisms. Let's analyze the potentialRead more
The use of DDT (dichlorodiphenyltrichloroethane) to control mosquito breeding in a lake can have profound effects on the trophic levels in the associated food chain. DDT is a pesticide that can bioaccumulate and biomagnify through food chains, impacting various organisms.
Let’s analyze the potential effects on each trophic level in the given food chain:
1. Plankton: DDT can enter the aquatic environment and affect plankton, which are primary producers. Plankton may absorb DDT from the water, leading to changes in their populations.
2. Small Fish: Small fish consume plankton and may accumulate DDT as they feed. The bioaccumulation of DDT in smaller organisms can lead to higher concentrations in organisms at higher trophic levels.
3.Large Fish: Large fish that prey on smaller fish can accumulate even higher levels of DDT due to biomagnification. DDT is known to persist in fatty tissues, and as larger predators consume numerous smaller organisms, the concentration of DDT can increase significantly.
4. Hawk: If the lake supports a population of fish that are contaminated with DDT, hawks (or other birds of prey) that feed on these fish may be exposed to high levels of the pesticide. Birds, especially raptors, can be particularly sensitive to DDT and its breakdown products.
5. Aquatic Environment: DDT can have detrimental effects on the overall aquatic environment. It can disrupt the balance of the ecosystem by affecting non-target organisms and reducing biodiversity. The long-term use of DDT can have cascading effects on various trophic levels, potentially leading to imbalances in the ecosystem.
Justification:
• Bioaccumulation: DDT tends to accumulate in the fatty tissues of organisms. As smaller organisms with lower trophic levels absorb DDT, the concentration increases in their tissues.
• Biomagnification: The process of biomagnification occurs as DDT moves up the food chain. Predators at higher trophic levels accumulate higher concentrations of the pesticide because they consume multiple contaminated organisms.
• Impact on Birds of Prey: DDT is notorious for its role in thinning eggshells of birds, particularly raptors like hawks. This thinning can lead to reproductive failures and population decline in these species.
In summary, the use of DDT in a lake can have far-reaching consequences on the trophic levels, potentially disrupting the balance of the ecosystem and posing risks to the health of organisms at higher trophic levels, especially birds of prey.
See lessIn an asexually reproducing species, if a trait X exists in 5% of a population and trait Y exists in 70% of the same population, which of the two trait is likely to have arisen earlier? Give reason.
Trait Y which exists in 70% (larger fraction) of the population, is likely to have arisen earlier because in asexual reproduction, identical copies of DNA are produced and variations do not occur. New traits come in the population due to sudden mutation and then are inherited. 70 % of the populationRead more
Trait Y which exists in 70% (larger fraction) of the population, is likely to have arisen earlier because in asexual reproduction, identical copies of DNA are produced and variations do not occur.
New traits come in the population due to sudden mutation and then are inherited. 70 % of the population with trait Y is likely to have been replicating that trait for a longer period than 5 % of population with trait X.
See less