Class 10 Science Chapter 8 MCQ : Heredity MCQs Quiz
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Have you ever wondered why you look similar to your parents but are not identical to them? The answer lies in Class 10 Science Chapter 8 Heredity and Evolution. This fascinating chapter explains the rules of inheritance and the story of how life has evolved over millions of years. To help you master complex topics like Mendel’s experiments, sex determination, and speciation, we have compiled a comprehensive Heredity MCQs Quiz in English. Practicing these Class 10 Science MCQs is the perfect way to prepare for your CBSE Board exams. Test your knowledge now and see how well you understand the science behind variation and evolution!
Class 10 Science Chapter 8 MCQ : Heredity MCQs Quiz
Chapter 8, Heredity and Evolution, begins by distinguishing between heredity (the passing of traits from parents to offspring) and variation. It covers Mendel’s Laws of Inheritance, detailing his experiments with pea plants and explaining terms like dominant traits, recessive traits, monohybrid, and dihybrid crosses. The chapter explains how sex is determined in humans using chromosomal patterns ($XX$ and $XY$). Moving to evolution, it discusses concepts like speciation, genetic drift, natural selection, and the classification of organisms based on evolutionary relationships. Students also learn about homologous and analogous organs, the study of fossils to trace evolutionary history, and the concept that evolution cannot always be equated with progress.
Conclusion
Understanding Heredity and Evolution is key to grasping the continuity of life and biological diversity. By attempting this Class 10 Science Chapter 8 Quiz, you have challenged yourself on concepts ranging from genetic crosses to the evidence provided by fossils. Regular practice of these Heredity and Evolution Class 10 MCQs will help you differentiate between acquired and inherited traits and understand the mechanism of evolution effectively. Make sure to review your answers and focus on the diagrams of Mendel’s cross to score full marks. Good luck with your exam preparation!
FAQs on Class 10 Science Chapter 8 MCQ : Heredity MCQs Quiz
- What is Heredity?
Heredity is the transmission of traits (characteristics) from parents to their offspring through genes. - Name the plant on which Gregor Mendel conducted his experiments.
Gregor Mendel conducted his experiments on the Garden Pea (Pisum sativum) plant. - What is the difference between dominant and recessive traits?
Dominant traits are those that express themselves even in the presence of a contrasting trait (e.g., Tall), whereas recessive traits can only express themselves when two copies of the trait are present (e.g., Dwarf). - How is the sex of a child determined in humans?
In humans, males have an \(XY \). sex chromosome pair and females have an \(XX \). pair. If a sperm carrying \(Y \). fertilizes the egg \(X \)., the child is male \(XY \).; if a sperm carrying \(X \). fertilizes the egg, the child is female \(XX \). - Define homologous organs with an example.
Homologous organs are organs that have a similar basic structure (anatomy) but perform different functions. Example: Forelimbs of a human and a bird. - What are analogous organs? Give one example.
Analogous organs are organs that have different basic structures but perform the same function. Example: Wings of a bird and wings of a bat. - What are fossils?
Fossils are the preserved remains or traces of ancient organisms (plants or animals) that lived in the geological past, found in rocks. - What is a monohybrid cross?
A monohybrid cross is a genetic cross that involves a single pair of contrasting traits, such as Tall vs. Dwarf plants. - What did Darwin mean by “Survival of the Fittest”?
“Survival of the Fittest” means that organisms that are better adapted to their environment tend to survive and reproduce more than those that are less adapted. - What is genetic drift?
Genetic drift refers to random changes in the frequencies of alleles (gene variants) in a population, which can lead to the loss of certain traits over time.
Practice Class 10 Science Chapter 8 MCQ : Heredity MCQs Quiz. Test your knowledge on Mendel’s laws, sex determination, and evolution for CBSE exams!
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