a. Tt b. Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. /Alternatively accept the definition of dominant and recessive traits with examples of T and t respectively /Alternatively accept the law of Dominance with examples of T and t. c. Out oRead more
a. Tt
b. Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. /Alternatively accept the definition of dominant and recessive traits with examples of T and t respectively /Alternatively accept the law of Dominance with examples of T and t.
c. Out of 800 plants 600 plants will be tall and 200 plants will be small, 1 TT: 2Tt: 1tt.
CBSE Board Exams 2024 Date Sheet Released for Class 10 and 12 – Start Preparing Now! The Central Board of Secondary Education (CBSE) has officially announced the date sheet for the 2024 board exams for both Class 10 and Class 12. Students in Class 10 can gear up as their exams kick off on February 1Read more
CBSE Board Exams 2024 Date Sheet Released for Class 10 and 12 – Start Preparing Now! The Central Board of Secondary Education (CBSE) has officially announced the date sheet for the 2024 board exams for both Class 10 and Class 12. Students in Class 10 can gear up as their exams kick off on February 15th, concluding on March 13th.
The process of flower development involves several stages, from gamete formation to fruit formation. Here's a simplified overview: 1. Gamete Formation (Reproductive Organs): The flower contains reproductive organs: stamens (male) and carpels (female). Male gametes (pollen grains) are produced in theRead more
The process of flower development involves several stages, from gamete formation to fruit formation. Here’s a simplified overview:
1. Gamete Formation (Reproductive Organs): The flower contains reproductive organs: stamens (male) and carpels (female). Male gametes (pollen grains) are produced in the anthers at the tips of stamens. Female gametes (ovules) develop in the ovary at the base of the carpel.
2. Pollination: Pollen is transferred from the anther to the stigma, either by wind, animals, or insects.
3. Fertilization: Pollen tube grows down the style, reaching the ovary. Fertilization occurs when a sperm cell from the pollen unites with an egg cell in the ovule, forming a zygote.
4. Seed Formation: The fertilized ovule develops into a seed, containing the embryo and a protective seed coat.
5. Fruit Development: The ovary surrounding the fertilized ovule develops into a fruit. The ovule transforms into a seed, and the ovary wall becomes the fruit wall.
6. Maturation: The seeds mature within the fruit.
7. Seed Dispersal: The mature fruit facilitates seed dispersal through various mechanisms such as wind, animals, or water.
This cycle ensures the continuation of the plant species. The flower, as the reproductive structure, undergoes these transformations to produce seeds within fruits, ensuring the spread and germination of new plants.
The pancreas plays a crucial role in digestion by secreting pancreatic juices into the small intestine. These juices contain enzymes, such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins, facilitating their absorption and utilization in the body's metabolic procRead more
The pancreas plays a crucial role in digestion by secreting pancreatic juices into the small intestine. These juices contain enzymes, such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins, facilitating their absorption and utilization in the body’s metabolic processes.
A food chain typically consists of several trophic levels, including producers, primary consumers, secondary consumers, and tertiary consumers. However, the number of trophic levels is often limited to around four or fewer in most ecosystems. Several reasons contribute to this limitation: a) EnergyRead more
A food chain typically consists of several trophic levels, including producers, primary consumers, secondary consumers, and tertiary consumers. However, the number of trophic levels is often limited to around four or fewer in most ecosystems. Several reasons contribute to this limitation:
a) Energy Transfer Efficiency: As energy moves through trophic levels, it is transferred less efficiently. The efficiency of energy transfer is generally around 10% from one trophic level to the next.
With each transfer, a significant portion of energy is lost as heat during metabolic processes. This inefficiency limits the number of trophic levels that can be sustained.
B) Biomagnification of Toxins: Toxins and pollutants can become concentrated in organisms at higher trophic levels through a process known as biomagnification.
As you move up the food chain, the concentration of toxins increases. This poses a risk of harmful effects on organisms at higher trophic levels, potentially leading to population declines.
c) Stability and Balance: Ecosystems tend to achieve a balance between predator and prey populations to maintain stability. Adding more trophic levels could disrupt this balance, making the system less stable.
d) Resource and complexity: As you move up the food chain, there is a decrease in the availability of resources, including food and suitable habitats. Ecosystem with additional trophic levels, making the system more challenging to model and predict. Stability and sustainability become more difficult to maintain.
While there are exceptions, and some ecosystems may support more than four trophic levels, the factors mentioned above generally limit the number of trophic levels in many ecosystems.
Sahil performed an experiment to study the inheritance pattern of genes. He crossed tall pea plants (TT) with short pea plants (tt) and obtained all tall plants in F1 generation. a. What will be set of genes present in the F1 generation? B. Give reason why only tall plants are observed in F1 progeny c. When F1 plants were self – pollinated, a total of 800 plants were produced. How many of these would be tall, medium height or short plants? Give the genotype of F 2 generation.
a. Tt b. Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. /Alternatively accept the definition of dominant and recessive traits with examples of T and t respectively /Alternatively accept the law of Dominance with examples of T and t. c. Out oRead more
a. Tt
See lessb. Traits like ‘T’ are called dominant traits, while those that behave like ‘t’ are called recessive traits. /Alternatively accept the definition of dominant and recessive traits with examples of T and t respectively /Alternatively accept the law of Dominance with examples of T and t.
c. Out of 800 plants 600 plants will be tall and 200 plants will be small, 1 TT: 2Tt: 1tt.
Is CBSE date sheet 2024 released?
CBSE Board Exams 2024 Date Sheet Released for Class 10 and 12 – Start Preparing Now! The Central Board of Secondary Education (CBSE) has officially announced the date sheet for the 2024 board exams for both Class 10 and Class 12. Students in Class 10 can gear up as their exams kick off on February 1Read more
CBSE Board Exams 2024 Date Sheet Released for Class 10 and 12 – Start Preparing Now! The Central Board of Secondary Education (CBSE) has officially announced the date sheet for the 2024 board exams for both Class 10 and Class 12. Students in Class 10 can gear up as their exams kick off on February 15th, concluding on March 13th.
See lessTrace the changes that take place in a flower from gamete formation to fruit formation.
The process of flower development involves several stages, from gamete formation to fruit formation. Here's a simplified overview: 1. Gamete Formation (Reproductive Organs): The flower contains reproductive organs: stamens (male) and carpels (female). Male gametes (pollen grains) are produced in theRead more
The process of flower development involves several stages, from gamete formation to fruit formation. Here’s a simplified overview:
1. Gamete Formation (Reproductive Organs): The flower contains reproductive organs: stamens (male) and carpels (female). Male gametes (pollen grains) are produced in the anthers at the tips of stamens. Female gametes (ovules) develop in the ovary at the base of the carpel.
2. Pollination: Pollen is transferred from the anther to the stigma, either by wind, animals, or insects.
3. Fertilization: Pollen tube grows down the style, reaching the ovary. Fertilization occurs when a sperm cell from the pollen unites with an egg cell in the ovule, forming a zygote.
4. Seed Formation: The fertilized ovule develops into a seed, containing the embryo and a protective seed coat.
5. Fruit Development: The ovary surrounding the fertilized ovule develops into a fruit. The ovule transforms into a seed, and the ovary wall becomes the fruit wall.
6. Maturation: The seeds mature within the fruit.
7. Seed Dispersal: The mature fruit facilitates seed dispersal through various mechanisms such as wind, animals, or water.
This cycle ensures the continuation of the plant species. The flower, as the reproductive structure, undergoes these transformations to produce seeds within fruits, ensuring the spread and germination of new plants.
See lessState the role of pancreas in digestion of food.
The pancreas plays a crucial role in digestion by secreting pancreatic juices into the small intestine. These juices contain enzymes, such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins, facilitating their absorption and utilization in the body's metabolic procRead more
The pancreas plays a crucial role in digestion by secreting pancreatic juices into the small intestine. These juices contain enzymes, such as amylase, lipase, and proteases, which break down carbohydrates, fats, and proteins, facilitating their absorption and utilization in the body’s metabolic processes.
See lessGive reason why a food chain cannot have more than four trophic levels.
A food chain typically consists of several trophic levels, including producers, primary consumers, secondary consumers, and tertiary consumers. However, the number of trophic levels is often limited to around four or fewer in most ecosystems. Several reasons contribute to this limitation: a) EnergyRead more
A food chain typically consists of several trophic levels, including producers, primary consumers, secondary consumers, and tertiary consumers. However, the number of trophic levels is often limited to around four or fewer in most ecosystems. Several reasons contribute to this limitation:
a) Energy Transfer Efficiency: As energy moves through trophic levels, it is transferred less efficiently. The efficiency of energy transfer is generally around 10% from one trophic level to the next.
With each transfer, a significant portion of energy is lost as heat during metabolic processes. This inefficiency limits the number of trophic levels that can be sustained.
B) Biomagnification of Toxins: Toxins and pollutants can become concentrated in organisms at higher trophic levels through a process known as biomagnification.
As you move up the food chain, the concentration of toxins increases. This poses a risk of harmful effects on organisms at higher trophic levels, potentially leading to population declines.
c) Stability and Balance: Ecosystems tend to achieve a balance between predator and prey populations to maintain stability. Adding more trophic levels could disrupt this balance, making the system less stable.
d) Resource and complexity: As you move up the food chain, there is a decrease in the availability of resources, including food and suitable habitats. Ecosystem with additional trophic levels, making the system more challenging to model and predict. Stability and sustainability become more difficult to maintain.
While there are exceptions, and some ecosystems may support more than four trophic levels, the factors mentioned above generally limit the number of trophic levels in many ecosystems.
See less