BIOLOGY 317 Spring First Hourly Exam 4/20/12

Transcription

1 Name: Lab sect. (TA name/time): BIOLOGY 317 Spring 2012 First Hourly Exam 4/20/12 1) (24 pts) Match the letter of the family given on the right with the characteristics for a plant described on the left. Each family may be used more than once. tepals, stamens, and carpels spirally arranged on an elongate receptacle perfect flowers with parts in multiples of 3; pinnately compound leaves fruit a nut; female flowers in catkins with 2 bracts per flower laminar stamens; showy tepals; ethereal oils 6 tepals; valvate anthers bilateral floral symmetry with many stamens composed of distinct anthers and filaments A. Berberidaceae B. Betulaceae C. Fagaceae D. Magnoliaceae E. Ranunculaceae female flowers with 3 fused carpels, of which two abort and one matures into a nut. tree with alternate leaves and doubly serrate leaf margins 2) (6) A plant is determined by artificial self-pollination to be fully self-compatible (SC). However, genetic tests on its progeny in the wild find that all of its offspring (seeds) are the result of cross-pollination. Describe two ways that a SC plant might avoid self pollination.

2 3) (21) Circle the best answer from the choices available with each question. In plants, spores are a) The product of meiosis b) The first cell of the sporophyte generation c) Called pollen grains d) Diploid e) Multicellular What is phylogeny? a) The classification of all living things b) A group composed of an ancestor and all of its descendants c) The pattern of evolutionary history among species d) The field concerned the naming of groups in a classification e) The process by which an unknown organism is identified A species with separate staminate (male) and pistillate (female) flowers, but with both occurring on a single individual is described as a) Dioecious b) Zygomorphic c) Bisexual d) Monoecious e) Autogamous A goal of modern classifications is to name monophyletic groups. Which of the following groups is not monophyletic? a) Seed plants b) Monocots c) Tricolpates (Eudicots) d) Angiosperms e) Dicots The androecium is a collective term to describe all of which part of a flower? a) sepals b) stamens c) nectaries d) petals e) carpels What is the process by which a plant can produce seed without sexual reproduction? a) Self-fertilization b) geitonogamy c) agamospermy d) cleistogamy e) vegetative reproduction Which of the following major groups of land plants has free-living gametophytes and dependent sporophytes? a) Angiosperms b) Seed plants c) Conifers d) Ferns e) Mosses

3 4) (16) Label the parts and answer the following questions Write answers here:

4 4 cont d) Refer to preceding page: Judging by external morphology, how many carpels does this flower have? Which of the following DOES NOT describe this flower (circle one): a) Complete b) Hypogynous c) Perfect d) Simple pistil e) Superior ovary f) The collective term for parts 1, 2, and 3 is: The collective term for parts 4 ad 5 is: The collective term for parts represented by 6 is: The collective term for parts represented by 7 is: 5) (9) Give the type of placentation and number of locules for the following ovary types (drawings represent ovary cross-sections): A. B. C. Placentation:... Locule number... 6) (4) Two major groups of flowering plants, Monocots and Tricolpates (also sometimes called Eudicots), account for approximately 90% of all angiosperms. Name and describe the primary synapomorphy for each group. 4

5 5) (15) Answer the questions below about the phylogenetic tree and classification depicted here. outgroup Crescentia uno Crescentia dos Tabebuia alpha Tabebuia beta Tabebuia gamma Tabebuia delta fleshy fruits red flowers bat pollination palmately lobed leaves A. What is the sister group to Tabebuia delta? B. What is the sister group to Crescentia? C. What would you do to make the classification of the ingroup (Crescentia and Tabebuia) reflect the phylogenetic relationships? D. What trait is a synapomorphy for the genus Crescentia? E. As indicated in this tree, dry fruits evolve into fleshy fruits in the ancestor of Crescentia. What is the shared ancestral fruit type for Tabebuia? 5

6 5) (5) List five (5) traits commonly associated with the wind pollination syndrome. 6