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Mayur Arya
Mayur Arya
Asked: December 27, 2023In: Class 10 Science

Certain specialised cells in animals called stem cells have the ability to divide and differentiate into different cell types. This helps in the replacement of a damaged organ. Name and explain two methods of asexual reproduction that are similar to stem cells and occur mostly in multicellular organisms. (b) Identify TWO pairs of reproductive organs in males and females that are functionally similar to each other. Justify.

Asexual reproduction involves the creation of offspring without the fusion of gametes. It produces genetically identical or nearly identical copies of the parent organism, commonly observed in bacteria, plants, and some animals.

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  • 1 1 Answer
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Prasant
Prasant
Asked: December 27, 2023In: Class 10 Science

Equal sized bars of aluminium and iron are exposed to the environment as shown below. Which of them is likely to corrode till the level marked by the line FIRST? Justify your answer.

Equal sized bars of aluminium and iron are exposed to the environment as shown below. Which of them is likely to corrode till the level marked by the line FIRST? Justify your answer.

Exposed iron reacts with oxygen and moisture in the environment, forming iron oxide, commonly known as rust. This corrosion weakens the metal, leading to degradation and loss of structural integrity.

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Rajshree Chatterjee
Rajshree Chatterjee
Asked: December 26, 2023In: Class 10 Science

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.

Genes follow inheritance patterns such as autosomal dominant, autosomal recessive, X-linked dominant, and X-linked recessive. These patterns dictate how traits are passed from one generation to the next.

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  • 2 2 Answers
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Rajshree Chatterjee
Rajshree Chatterjee
Asked: December 26, 2023In: Class 10 Science

Gas A, found in the upper layers of the atmosphere, is a deadly poison but is essential for all living beings. The amount of this gas started declining sharply in the 1980s. a. Identify Gas A. How is it formed at higher levels of the atmosphere? b. Why is it essential for all living beings? State the cause for the depletion of this gas.

The upper layers of the Earth’s atmosphere, including the thermosphere and exosphere, extend beyond the mesosphere. They contain sparse air molecules and play a crucial role in phenomena like auroras.

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Kiara Singh
Kiara Singh
Asked: December 26, 2023In: Class 10 Science

In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?

In the above circuit, if the current reading in the ammeter A is 2A, what would be the value of R1?

An ammeter measures electric current in amperes within an electrical circuit. A circuit is a closed loop of conductive elements where electrons flow. Ammeters help monitor and control current flow.

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