Question

Instructions: After reading the assignment for this week's lab, answer the following questions in complete sentences. Answer each of the questions, and then enter the terms into the box indicated in order to construct a diagram of alternation of generations. l. What generation means 'spore- bearing plant oghyte Box 1) ohvte (Box 2) 2. What generation means "gamete-bearing plant ? Dametoghute (Box 2) at- 2. What generation means "gamete-bearing plant"? 3. What type of cell does the generation in box 1 give rise to?-hplia- (Box 3) What two types of cells does the generation in box 2 give rise to? (Box 4 or 5) and 4. (Box 4 or 5) The cells in boxes 3, 4, and 5 are reproductive cells that are all haploid. However, the cells in boxes 4 and 5 differ from the type of cell in box 3 because these cells have to come together during an event called to grow into a living organism. When these cells do come together they form a (Box 7), 5. (Box 6) in order 6. (Box 8) chromosome number. This marks the which hasa transition to the other generation because this grows into the generation you indicated in box 1. Since this generation came about through the union the cells in boxes 4 and 5, it (Box 9) chromosome number. 7. must have a Since this generation gives rise to haploid reproductive cells you have already entered in box 3, it must do so through the cell division process of 8. (Box 10) These reproductive cells, unlike those in boxes 4 and 5, do not need to unite in order to grow into the next generation. Given a habitat conducive to germination, they simply grow into the next generation through the cell division process of (Box 11). 9. 10. Since the generation in box 2 arose through simple growth of a haploid cell, it must have a ( (Box 12) chromosome number 138 CHAPTER 7 The Diversity of Green Plants 11. Since this generation gives rise to haploid cells in boxes 4 and 5, it must do so through the cell division process of (Box 13). Note that this is different than in animals. 9. 8. 6. 10. 3. 4. 5. 13. 12.

Answer 1

Questions 1,2,3 are correct what is already filled so answers for onwards are:

Plant Life Cycle-Alternation of Generation Fertilization (Syngamy) ygote mitosis & Egg Sperm development Embryo haploid (1n) generation mitosis diploid (2n) generation Gametophyte Sporophyte mitosis Spores Meiosis

Question 4: The two type of cells does the generation in box 2 give are sperm and egg.

Question 5: Event is called Fertilization as can be observed in the figure.

Question 6: When these cells do come together to form a zygote which has a 2N Chromosome number.

Question 7: SInce this generation came about through the union the cells in box 4 and box 5, it must have a 2N chromosome number.

Question 8: Cell division process of Meiosis.

Question 9: Cell division process of Mitosis.

Question 10: it must have a 1N chromosome number.

Question 11: cell division process of mitosis.