Bizarre Facts in Biology

General Biology: BI101 Spring, 2007 ANSWER KEY TO STUDY QUESTIONS: Ch 21

1. Which of the following is true concerning the life cycle of a moss? b. Protonema arise from germinated spores.

2. Which of the following plant groups has swimming sperm and a dominant sporophyte generation? b. pterophytes

3. Which of the following statements about the life cycle of the pine is false? c. Female gametophyte tissue becomes the food source (nutritive tissue) for the embryo.

4. In which of the following plant groups is the sporophyte dependent on the gametophyte? b. bryophytes

5. Which of the following is a characteristic of the ferns? b. They are vascular plants, containing xylem and phloem.

1. The ovule is found in the ______and ______. c. Coniferophyta; Pterophyta

2. Ferns have the ______generation as the dominant generation. The sporophyte generation has specialized ______tissue for transport within the plant. d. sporophyte; vascular

3. The archegonium produces: a. an egg cell.

4. The anther in a complete flower has the same reproductive function as the ______in the Bryophyta. b. sporangium

5. The sporangium is part of the ______generation, it produces ______. b. sporophyte; spores

6. The seed is the ______which contains the ______generation. a. ovule; gametophyte

7. In the flowering plants the gametophyte: a. develops in the flower.

8. One of the reasons the mosses remain small is that they lack ______tissue. c. vascular

9. Pollen grains are: b. male gametophytes.

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