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| 1 | |
Sporophytes produce spores by ______________; gametophytes produce gametes by ______________. |
| | A) | mitosis; meiosis |
| | B) | mitosis; mitosis |
| | C) | meiosis; mitosis |
| | D) | meiosis; meiosis |
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| 2 | |
Which of the following statements about flowering is incorrect? |
| | A) | Temperature can influence flowering in angiosperms. |
| | B) | Light sensing phytochromes are stimulated at sunrise by red light. |
| | C) | In long-day plants, CONSTANS protein accumulates throughout the day to induce flowering. |
| | D) | Leaves transmit a flowering signal to shoot apical meristem via phloem. |
| | E) | All of the statements about flowering are correct. |
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| 3 | |
The pollen wall of a mature pollen grain is composed primarily of which one of the following polymers? |
| | A) | Cellulose |
| | B) | Callose |
| | C) | Lignin |
| | D) | Sporopollenin |
| | E) | Flavenoids |
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| 4 | |
Which of the following flower characteristics is not controlled by developmental genes? |
| | A) | Variation in the number of whorls |
| | B) | Variation in flower fragrance |
| | C) | Variation in number of flower organs |
| | D) | Variation in flower color |
| | E) | All of the flower characteristics are determined by developmental genes. |
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| 5 | |
Which of the following accurately describes an advantage of asexual reproduction in plants? |
| | A) | Allows reproduction in habitats where pollinators or mates are rare |
| | B) | Allows some plants to persist for very long periods of time |
| | C) | Maintains favorable gene combinations that allow faster population growth in stable environments |
| | D) | Allows for greater genetic diversity |
| | E) | Allows reproduction in habitats where pollinators or mates are rare lallows some plants to persist for very long periods of time ,and maintains favorable gene combinations that allow faster population growth in stable environments |
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| 6 | |
Which of the following is found in eudicot seeds but not in monodicot seeds? |
| | A) | Epicotyl |
| | B) | Hypocotyl |
| | C) | Radicle |
| | D) | Seed coat |
| | E) | Cotyledon |
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| 7 | |
Put in order, from innermost to outermost, the flower organs developed from whorls.
I: sepals
II: stamens
III: petals
IV: carpels
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| | A) | iii; iv; i; ii |
| | B) | i; iv; ii; iii |
| | C) | iii; ii; i; iv |
| | D) | iv; ii; iii; i |
| | E) | i; iii; iv; ii |
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| 8 | |
A young, multicellular diploid sporophyte that develops from a single celled zygote by mitosis is most accurately referred to as a(n) |
| | A) | seed. |
| | B) | ovule. |
| | C) | egg. |
| | D) | flower. |
| | E) | embryo. |
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| 9 | |
True or False: During the maturation of a fruit, the ovary wall changes into a fruit wall referred to as a pericarp. |
| | A) | True |
| | B) | False |
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| 10 | |
Which of the following is not an adapted form of seed dispersal? |
| | A) | Lightweight seeds capable of floating in wind |
| | B) | Strong, lightweight outer coatings allowing flotation of seeds. |
| | C) | Surrounding seeds with fleshy, attractive fruit for ingestion by animals |
| | D) | Small seeds attractive to birds in the form of nuts or berries |
| | E) | All of the choices are adapted forms of seed dispersal |
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| 11 | |
A flower which has sepals, petals, but lacks stamens and carpels, would most accurately be referred to as |
| | A) | staminate. |
| | B) | perfect. |
| | C) | imperfect. |
| | D) | carpellate. |
| | E) | incomplete. |
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| 12 | |
Which of the following colors would most likely be produced by flavenoids? |
| | A) | Red |
| | B) | Yellow |
| | C) | Purple |
| | D) | Blue |
| | E) | All of these colors are produced by flavonoids |
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| 13 | |
True or False: Flowers that display bilateral symmetry are most accurately referred to as zygomorphic flowers. |
| | A) | True |
| | B) | False |
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| 14 | |
Which one of the following statements about variations in flowers is incorrect? |
| | A) | Clusters of various types of flowers are referred to as inflorescences. |
| | B) | Different flower fragrances arise from the production of various secondary metabolites. |
| | C) | Eudicot flower organs typically occur in threes or multiples of three. |
| | D) | Many flowers pollinated by animals occur in clusters of various types. |
| | E) | Monoecious plants produce both staminate and carpellate flowers. |
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| 15 | |
Flowering plant female gametophytes contain an egg cell wedged between two cells most accurately referred to as |
| | A) | tube cells. |
| | B) | antipodal cells. |
| | C) | sporangia. |
| | D) | integuments. |
| | E) | synergids. |
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| 16 | |
Which one of the following statements about self-incompatibility (SI) is incorrect? |
| | A) | SI occurs when pollen is genetically too similar to the pistil. |
| | B) | If the SI system becomes inactivated, a plant species can become infertile. |
| | C) | SI proteins are encoded by a gene locus referred to as the S gene locus. |
| | D) | Incompatible pollen is eliminated by preventing rehydration of pollen when it reaches the stigma. |
| | E) | All of the statements about self-incompatibility (SI) are correct. |
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| 17 | |
True or False: When two different sperm cell nuclei fuse with a single egg cell, this process is most accurately referred to as double fertilization. |
| | A) | True |
| | B) | False |
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| 18 | |
Which of the following hormones are involved in young shoot and root at the apical and basal poles? |
| | A) | Auxin |
| | B) | Cytokinins |
| | C) | Abscisic acid (ABA) |
| | D) | Auxin and Cytokinins |
| | E) | Cytokinins and abscisic acid (ABA) |
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| 19 | |
In monocots, an epicotyl with its first bud enclosed in a protective sheath is known as a ________________ and the enclosed root is referred to as a ________________. |
| | A) | radical : coleoptile |
| | B) | hypocotyls : radical |
| | C) | coleorhizae : coleoptile |
| | D) | coleorhizae : hypocotyl |
| | E) | coleoptiles : coleorhizae |
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| 20 | |
True or False: Some seeds germinate rapidly upon dispersal, while other seeds are capable of germinating thousands of years later under appropriate conditions. |
| | A) | True |
| | B) | False |
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