science 8 second quarter pptxxxxxxxxxxxxx

Ed

1. Science Quarter 4 – Module 2: Cellular Reproduction

2. Directions: Choose the letter of the correct answer. Write your answers on a separate sheet of paper. 1. Which statement about mitosis is INCORRECT? A. The first phase is prophase. B. It forms four daughter cells. C. It makes diploid or haploid nuclei. D. Separation of sister chromatids occurs. 2. What is the form of reproduction whose benefit is variability of the offspring? A. asexual B. binary fission C. mitosis D. sexual 3. The diploid (2N) chromosome number in an organism is 42. What is the normal chromosome number of its sex cells? A. 21 B. 42 C. 63 D. 84

3. 4. These activities of the cell occur in both mitosis and meiosis EXCEPT: A. cytokinesis B. DNA replication C. karyokinesis D. Synapsis For items 5 -10, answer each statement using the given choices. Write the letter only. Meiosis I B. Meiosis II 5. Occurrence of synapsis between tetrads. 6. Separation of homologous chromosomes. 7. Results in four sperm cells in human males. 8. Daughter cells have chromosomes with two sister chromatids. 9. Daughter nuclei have chromosomes with single chromatids. 10. Occurrence of crossing-over of homologous chromosome .