Test-MCQ Class 10-NCERT -Science-Chapter 8-Test-2 Chapter 8: How do Organisms Reproduce? Multiple Choice Questions No of Questions : 15 Marks: 15 Please enter your email: 1. Factors responsible for the rapid spread of bread mould on slices of bread are I. large number of spores. II. availability of moisture and nutrients in bread. III. presence of tubular branched hyphae. IV formation of round-shaped sporangia III and IV I and III I and II II and IV 2. During adolescence various changes occur in the body of humans. Mark one change associated with sexual maturation in males. Increase in body height Weight gain Cracking of voice Loss of milk teeth 3. Observe the diagram given along side. What happens after the above stage? Ovary develops into a fruit and ovules into seeds The ovary splits open Germination of seeds takes place The pvules are dispersed 4. What in your opinion could be the best reason to explain why menstruation is not taking place in a healthy woman? Early release of ovum Psychological reason Fertilisation of ovum Build up of female sex hormones in the blood stream 5. The correct sequence of reproductive stages seen in flowering plants is zygote, gametes, embryo, seedling seedling, embryo, zygote, gametes gametes, embryo, zygote, seedling gametes, zygote, embryo, seedling 6. Offsprings formed by asexual method of reproduction have greater similarity among themselves because I. asexual reproduction involves only one parent. II. asexual reproduction does not involve gametes. III. asexual reproduction occurs before sexual reproduction. IV. asexual reproduction occurs after sexual reproduction. I and II II and IV I and III III and IV 7. Two flowers are identified by a botanist with the following features that flower A is having only stamen and flower B is having both stamen and pistil. Which of the following statements is correct? Flower A will bear seeds and flower B cannot bear seeds after fertilisation. Flower A will produce pollen grains and flower B cannot produce pollen grains. Neither flower A and nor flower B can show self-pollination. Flower A cannot be fertilised and flower B can show fertilisation. 8. In the list of organisms given below, those that reproduce by the asexual method are (i) banana (ii) dog (iii) yeast (iv) Amoeba (ii) and (iv) (i) and (iv) (ii), (iii) and (iv) (i), (iii) and (iv) 9. In a flower, the parts that produce male and female gametes (germ cells) are stamen and anther stamen and style filament and stigma anther and ovary 10. Which of the following is the correct sequence of events of sexual reproduction in a flower? seedling, embryo, fertilisation, pollination pollination, fertilisation, seedling, embryo embryo, seedling, pollination, fertilisation pollination, fertilisation, embryo, seedling 11. Characters transmitted from parents to offspring are present in golgi bodies cytoplasm genes ribosome 12. In Spirogyra, asexual reproduction takes place by division of a cell into many cells formation of young cells from older cells. division of a cell into two cells breaking up of filaments into smaller bits 13. The number of chromosomes in parents and offsprings of a particular species remains constant due to doubling of chromosomes after zygote formation halving of chromosomes after gamete formation doubling of chromosomes after gamete formation halving of chromosomes during gamete formation 14. In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called. filaments rhizoids hyphae roots 15. Vegetative propagation refers to formation of new plants from stem, roots and leaves stem, leaves and flowers stem, flowers and fruits stem, roots and flowers Please Enter Your Name, School Name & Class in the given below box and submit: ( results will be shown after submit, within few moments on same page ) Loading … Question 1 of 16
