Eoc Review Biology| 175 Questions| With Complete Solutions| Rationales

Which of these stages will be formed when a 16-celled embryo undergoes differentiation? correct answer: Blastula The organism shown in the drawing usually reproduces through the _________ process called binary fission. A) asexual B) heterosexual C) isosexual D) sexual Bacteria reproduce through the asexual process called binary fission, or simple cell division. correct answer: A) asexual The picture depicts budding in the yeast cell. What is the result of this process? A) The bud develops into a yeast cell with new genes. B) The bud develops into a yeast cell with the same genes as the parent cell. C) The bud develops into a yeast cell with half the genetic information from the parent. D) The bud develops into a yeast cell with double the genetic information from the parents. Budding is a form of asexual reproduction in yeast. Chromosomes are replicated and then one set is passed on to the offspring or bud. So, The bud develops into a yeast cell with the same genes as the parent cell. correct answer: B) The bud develops into a yeast cell with the same genes as the parent cell. The bee is accidentally responsible for transferring pollen from the anther to the stigma. Following the bee's visit, what takes place NEXT in the life cycle of a flowering plant? A) germination B) pollination C) fertilization D) seed production The next step in the life cycle of a flowering plant is fertilization. The pollen carries sperm that fertilizes the egg of another plant. Next a seed is produced and if conditions are right, the seed germinates. correct answer: C) fertilization Which of these would be the end of meiosis I and the beginning of meiosis II? A) Mature ovum B) Polar bodies C) Primary oocyte D) Secondary spermatocytes The end of meiosis I and beginning of meiosis II would be the Secondary spermatocytes or the secondary oocyte. Meiosis occurs in two distinct phases. At the end of meiosis I, there are two cells. By the end of meiosis II, four haploid cells have been formed. correct answer: D) Secondary spermatocytes Which of these is the female reproductive cell? A) egg B) fetus C) sperm D) zygote An egg is the female reproductive cell. correct answer: A) egg A human body cell has 46 chromosomes. How many chromosomes does a female egg cell have? A) 23 B) 24 C) 46 D) 48