Bio102S08Exam2KEY

Bio102S08Exam2KEY - Name: Biol 102: Seed Plant Physiology...

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Name: Biol 102: Seed Plant Physiology and Diversity Instructions: For the short-answer questions, I do mean short! One sentence may be enough, if you’ve thought your answer through. You are welcome to draw pictures or make tables, but label these clearly to receive any credit. You WILL uphold the Gustavus honor code, as I will pursue any violations to the fullest extent possible. Note that question order and setup differs among exam copies (in other words, your question 5 might be your neighbors’ question 9!). Fill in the Blank / Short Answer. 21 pts. 1. Name the root-like fibrous structures that lie underneath moss (1) rhizoids NOT rhizomes, which are found in vascular plants 2. Name two differences between these structures and true roots (1) only there to anchor plant, little/no absorption or storage of nutrients, nonvascular, one to a few cells thick, no root cap, no apical meristem, no secondary growth 3. Plant cells communicate with eachother by what chemical compounds? (1) hormones Examine the flower picture below and answer the following questions. (4) 4. Which labelled part on the flower will develop into the seed? H 5. Which labelled part on the flower will contain microspores and generative cells? A 6. Which part is the stigma? E 7. Structures labelled “a” and “d” are modifications of which type of plant organ? leaf 8. List three structural, biochemical, or genetic adaptations that group the earliest seed plant phyla as “gymnosperms”: (3) Seed exposed on flat, exposed sporophylls (strobilus) Pollen + megaspore = 1 fertilization event Gamete and seed development can last several years Bio 102 – Spring 2008 Section 2 Pg. 1 of 5
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Single integument for seed coat Water & food transport mostly up & down Little tolerance for developmental mutations Mostly abiotic pollination Sieve tubes without sieve tube member cells or companion cells Separate m & fm strobilites 9. Plants are capable of limited movement through growth and some can be carnivorous. Consider the major features (i.e., features discussed in our class) of all land plants but which are NOT found in the animal kingdom. Then… …name a feature that differentiates a plant cell from an animal cell (1) Central storage vacuole Cell walls of cellulose Plasmodesmata …name a feature that differentiates a plant’s life history (growth, development, reproduction) from an animal life history (1) Retention of embryonic tissues through life (totipotency) Only three organs Alternation of generations 10. A question from group Cyanophyta: What plant phylum contains the most species producing secondary compounds? (1) Anthophyta (Angiosperms) 11. A question from group Gastropoda: Black walnut trees release the compound juglone from their roots into the soil. Juglone will inhibits the growth and prevents seed germination of
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Bio102S08Exam2KEY - Name: Biol 102: Seed Plant Physiology...

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