61 || MCQs CH 9 CLASS 10 || CHAPTER 9 HEREDITY AND EVOLUTION MCQs || CH 9 MCQs CLASS 10 SCIENCE

Chapter 9 of 10th grade Science textbook focuses on the concept of Heredity and Evolution. Heredity refers to the passing on of genetic traits from parents to offspring, while Evolution refers to the gradual changes in living organisms over time.

The chapter starts with the discussion of Mendel's laws of inheritance, which laid the foundation for understanding the inheritance of traits. It further discusses the structure and function of DNA, which carries genetic information. The chapter also explains the various modes of inheritance, such as autosomal, sex-linked, and polygenic inheritance.

The latter part of the chapter deals with the concept of Evolution, including the various theories of Evolution such as Lamarckism and Darwinism. It explains the mechanisms of Evolution, such as natural selection, genetic drift, and migration. The chapter also covers the evidence for Evolution, including fossil records, comparative anatomy, and molecular biology.

Overall, this chapter provides a fundamental understanding of Heredity and Evolution, which is essential for further studies in biology.