Test-MCQ Class 10-NCERT -Science-Chapter 9-Test-1 Chapter 9: Heredity and Evolution Multiple Choice Questions No of Questions : 10 Marks: 10 Please enter your email: 1. An example of homologous organs is potato and runners of grass All of the given our teeth and an elephant’s tusks our arm and a dog’s foreleg 2. The science, which deals with study of heredity and variations is called genetics phylogeny palaeontology embryology 3. Archaeopteryx is a connecting link between birds and dinosaurs reptiles and birds birds and insects reptiles and aquatic animals 4. For palaeontological studies a scientist will gather the evidences from study of analogy fossils All of the given study of homology 5. In evolutionary terms, we have more in common with a bacterium a Chinese school boy a chimpanzee a spider 6. Aditya was observing some organisms in lab and tried to compare them. The presence of which organs will confirm to him that they share evolutionary history? Analogous organs Paralogous organs None of the any Homologous organs 7. New species may be formed if I. DNA undergoes significant changes in germ cells. . II. chromosome number changes in the gamete. III. there is no change in the genetic material. IV. mating does not take place. I and III II, III and IV I, II and III I and II 8. Which of the following statements is not true with respect to variation? All variations in a species have equal chance of survival Variation is minimum in asexual reproduction. Selection of variants by environmental factors forms the basis of evolutionary processes. Change in genetic composition results in variation. 9. Select the statement that describes characteristics of genes. . In individuals of a given species, a specific gene is located on a particular chromosome. Genes are specific sequence of bases in a DNA molecule. A gene does not code for proteins. Each chromosome has only one gene. 10. If a round, green seeded pea plant (RRyy) is crossed with wrinkled, yellow seeded pea plant (rrYY), the seeds produced in F1 – generation will be wrinkled and yellow round and green round and yellow wrinkled and green Please Enter Your Name, School Name & Class in the given below box and submit: ( results will be shown on this page within few moments after submit ) Loading … Question 1 of 11