Term
| Flowering plants have evolved to attract animals to assist them in pollination. Which of the following animals is not a common pollinator of flowering plants? |
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Definition
| All of the above are common animal pollinators of flowering plants. |
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Term
| What is the first step that occurs in the process of angiosperm reproduction after a pollen grain lands on a stigma of the correct species? |
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Definition
| A pollen tube forms to carry the sperm cells towards the ovary. |
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Term
| Which of the following is the proper sequence of events occurring when a flowering plant reproduces? |
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Definition
| meiosis; pollination; fertilization; embryo formation |
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Term
| "Double fertilization" in angiosperm plants refers to: |
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Definition
| the fusion of one sperm cell with the egg, and another with two nuclei of the endosperm-forming cell. |
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Term
| The sperm cells in a pollen grain can serve different purposes. Which of the following could NOT happen to a sperm cell in nature? |
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Definition
| Both c) and d) could not occur in nature. |
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Term
| By what process do the haploid cells in a new pollen grain produce two sperm cells? |
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Definition
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Term
| Which of the following is NOT a method by which plants reduce the possibility of self-fertilization? |
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Definition
| All the above are methods used by plants to reduce self-fertilization. |
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Term
| Which of the following is TRUE about a sexually reproducing population? |
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Definition
| The population can better keep up with changing conditions. |
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Term
| From an evolutionary standpoint, why do many flowers have attractive colors and smell good? |
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Definition
| to facilitate the transport of male gametes to female structures |
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Term
| The phrase "double fertilization" in angiosperms is best described by which of the choices below? |
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Definition
| Each pollen grain contains two sperm cells and one leads to the fertilization that produces the embryo and the other leads to the fertilization that produces the endosperm. |
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Term
| Some fruits are designed to be attractive food for animals. Other fruits that rely on animal dispersal are: |
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Definition
| sticky or covered with clingy burrs |
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Term
| Which of the following is NOT true about a plant seed? |
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Definition
| It is fleshy, juicy, and edible. |
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Term
| Why is staggered maturation a good mechanism for reducing self-fertilization? |
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Definition
| By the time one gamete is ready, the other is no longer viable or even present for fertilization to occur. |
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Term
| The outer green leaflike portions of a flower enclose the inner petals like a protective barrier. Can you name this outermost portion from the choices below? |
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Definition
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Term
| Aspens have adapted to cold temperatures on the Orkney Islands by: |
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Definition
| reproducing asexually through root suckers. |
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Term
| When you are seven years old, you write your name four feet above the ground, into a 12 foot tall bamboo plant. You spend the next ten years in a special home for vandals. When you get out the bamboo is 24 feet tall. At that time, how far above the ground will your name be? |
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Definition
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Term
| Which of the following is the most plausible explanation for why fruits evolved in plants? |
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Definition
| To aid in the dispersal of the seeds. |
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Term
| Which of the following could be considered a "layer of lateral meristem cells"? |
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Definition
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Term
| In flowering plants, meiosis occurs: |
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Definition
| in both the ovule and the anther. |
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Term
| Which of the following is a common gardening practice? |
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Definition
| using genetically-identical clones produced by a plant through asexual reproduction |
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Term
| The knots we see in wood represent: |
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Definition
| places where branches were connected to the trunk. |
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Term
| Each angiosperm pollen grain contains how many sperm cells? |
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Definition
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Term
| All of the following are correct statements about the pollen of flowering plants EXCEPT: |
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Definition
| All of the cells of the pollen grain are diploid. |
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Term
| Branches form on a plant when: |
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Definition
| Dormant meristem cells in the stem are stimulated by plant hormones. |
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Term
| Fruits often taste bad before they ripen. This is probably because: |
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Definition
| fruit that gets dispersed before the seeds are developed may not be capable of propagating new plants. |
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Term
| The embryo sac that forms within the ovule in a plant ovary forms from: |
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Definition
| a haploid megaspore undergoing mitosis. |
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Term
| A fertilized zygote is depicted in which of the labeled drawings? |
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Definition
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Term
| In order for asexual propagation to work, the bit of plant used to start a new plant must have: |
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Definition
| some undifferentiated cells. |
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Term
| The scientific term for wood is: |
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Definition
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Term
| Flowering plants have evolved to attract animals to assist them in pollination. Which of the following animals is not a common pollinator of flowering plants? |
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Definition
| All of the above are common animal pollinators of flowering plants. |
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Term
| Which of the following is the correct order of events in the angiosperm lifecycle? |
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Definition
| male anthers release pollen, a pollen grain releases two sperm, a sperm fuses with the egg, a sperm fuses with endospore-forming nuclei, the zygote and endosperm develop into a seed |
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Term
| Carrion flowers mostly attract: |
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Definition
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Term
| When, after seed germination, does photosynthesis begin? |
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Definition
| when the shoot emerges from the soil |
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Term
| Which of the following terms describes the situation in most angiosperm plants, where male and female parts are in the same individual? |
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Definition
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Term
| Which of the following describes an alternative to sexual reproduction employed by most plants? |
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Definition
| sprouting (such as through root suckers) |
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Term
| Which of the following mechanisms would NOT reduce inbreeding or genetic diversity in a species? |
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Definition
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Term
| The _________ is the pollen-producing part of the male reproductive structure of the flowering plant. |
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Definition
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Term
| "A group of outer protective cells directly surrounding a diploid egg-producing cell" describes what plant structure? |
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Definition
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Term
| The common term for the action of transferring pollen grains from an anther onto a stigma is: |
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Definition
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Term
| The endosperm that forms at the time of fertilization comes from: |
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Definition
| the fusion of a sperm cell with the central cell of the embryo sac. |
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Term
| Which floral organ is represented by the letter g? |
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Definition
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Term
| Sexual reproduction enhances the genetic diversity of offspring for three reasons: 1) genetic material from two individuals is mixed; 2) crossing over creates new allele combinations; and 3): |
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Definition
| homologues are randomly reassorted. |
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Term
| Which of the following is NOT true about secondary growth seen in trees? |
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Definition
| Cells of the vascular cambium produce a ring of cells toward the inside of the trunk called the lateral meristem. |
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