Q&A Hero

Q: The source of a fruit produced by an angiosperm is its: A) endosperm. B) ovary wall. C) sepal. D) seed.

Q: Place the following listed items in the correct order in relation to the life cycle of a flowering plant: (1) fertilization, (2) formation of a pollen tube, (3) pollination. A) 1, 2, 3 B) 3, 2, 1 C) 2, 3, 1 D) 2, 1, 3

Q: Which statement best describes the role of the megaspore in angiosperm reproduction? A) The megaspore develops into a seed. B) The megaspore produces pollen grains. C) The megaspore develops into the anther. D) The megaspore produces the egg-containing embryo sac.

Q: Fusion of a sperm cell with the large central cell in an angiosperm embryo sac produces: A) a spore. B) the zygote. C) the endosperm. D) a pollen tube.

Q: The female gametophyte generation of angiosperms is represented by: A) pollen grains. B) embryo sacs. C) seeds. D) pollen tubes.

Q: The male gametophyte generation of angiosperms is represented by: A) pollen grains. B) embryo sacs. C) seeds. D) the style.

Q: Companion cells are specialized cells found in which plant tissue? A) meristematic tissue B) phloem C) xylem D) ground substance

Q: The force that moves material through phloem is provided by: A) gravity. B) transpiration. C) osmosis. D) active transport.

Q: The force that moves water through xylem is provided by: A) gravity. B) transpiration. C) osmosis. D) active transport.

Q: Which of the following best describes the nature of the sieve element cells of mature, functioning phloem? A) living, thick-walled tubes B) dead, thick-walled tubes C) living cells that have lost their nucleus D) dead cells that retain some organelles and some maintenance functions

Q: Which of the following best describes the nature of the cells of mature, functioning xylem? A) living, thick-walled tubes B) dead, thick-walled tubes C) living cells that have lost their nucleus D) dead cells that retain some organelles and some maintenance functions

Q: Because a plant can grow indefinitely at the tips of the roots and shoots, we say that a plant's growth is: A) annualized. B) indeterminate. C) determinate. D) limitless.

Q: Lateral buds tend to stay dormant when: A) conditions are favorable for leaf growth. B) damaged apical meristems produce hormones that suppress their growth. C) healthy apical meristems produce hormones that suppress their growth. D) root growth is rapid.

Q: Growth areas of an angiosperm are called: A) ground tissue. B) root caps. C) cuticles. D) apical meristems.

Q: Which statement best describes primary growth in angiosperms? A) Growth occurs at the tips of shoots and roots. B) Growth occurs evenly throughout the plant. C) First-year growth occurs at the tips of shoots and roots, and then growth occurs evenly throughout the plant as it ages. D) First-year growth occurs evenly throughout the plant, and then growth only occurs at the tips and shoots as it ages.

Q: You find a leaf that has large stomata and a thick, waxy covering. What is clear about the original plant? A) The plant minimizes sunlight uptake. B) The plant maximizes nutrient uptake. C) The plant minimizes nutrient uptake. D) The plant minimizes water loss.

Q: Which plant tissue contains cells called tracheids? A) meristematic tissue B) phloem C) xylem D) ground substance

Q: Vascular tissue that conducts food produced during photosynthesis is the: A) meristematic tissue. B) phloem. C) xylem. D) ground substance.

Q: Vascular tissue that conducts water and minerals is the: A) meristematic tissue. B) phloem. C) xylem. D) ground substance.

Q: Which plant tissue may play a role in photosynthesis, nutrient storage, and plant structure? A) meristematic B) ground C) vascular D) dermal

Q: Which plant tissue is associated with a waxy coating called the cuticle? A) meristematic B) ground C) vascular D) dermal

Q: Refer to the scenario below, and then answer the following question(s).A friend of yours finds a plastic bag containing what appear to be similar seeds collected last year during a vacation hiking trip. Your friend isn't quite sure which plant he collected them from. You open the seed with a sharp knife, examine the inside, and ask him if it was a non-woody plant with narrow leaves. Now recalling the plant, and astonished by your "detective work," he says, "Yes! How did you know?" Your friend then presents several pressed flowers and states that one of the flowers was from the plant from which he collected the seeds, but he isn't exactly sure which one. You examine the petals and sepals of each flower. The first flower has six parts, the second has five parts, and the third has eight parts.Which flower would you select as the one matching the plant from which he gathered the seeds?A) The flower with six partsB) The flower with five partsC) The flower with eight partsD) Either the flower with five or the flower with eight parts could match the seeds.

Q: Refer to the scenario below, and then answer the following question(s).A friend of yours finds a plastic bag containing what appear to be similar seeds collected last year during a vacation hiking trip. Your friend isn't quite sure which plant he collected them from. You open the seed with a sharp knife, examine the inside, and ask him if it was a non-woody plant with narrow leaves. Now recalling the plant, and astonished by your "detective work," he says, "Yes! How did you know?" Your friend then presents several pressed flowers and states that one of the flowers was from the plant from which he collected the seeds, but he isn't exactly sure which one. You examine the petals and sepals of each flower. The first flower has six parts, the second has five parts, and the third has eight parts.How did you know by examining the seed that it was a non-woody plant with narrow leaves?A) The seed contained an embryonic flower with four petals.B) The seed contained a small taproot.C) The seed contained one cotyledon.D) The seed contained two cotyledons.

Q: Flower parts arranged in multiples of four or five is characteristic of: A) monocots. B) dicots. C) both monocots and dicots. D) non-flowering seed plants.

Q: Secondary woody growth is characteristic of: A) monocots. B) dicots. C) both monocots and dicots. D) non-flowering seed plants.

Q: Narrow, parallel-veined leaves are characteristic of: A) monocots. B) many dicots. C) both monocots and dicots. D) non-flowering seed plants.

Q: A ring of vascular bundles in a stem is characteristic of: A) monocots. B) many dicots. C) both monocots and dicots. D) non-flowering seed plants.

Q: In both monocotyledons and dicotyledons, a cotyledon is a(n): A) type of seed. B) type of flower. C) embryonic root. D) embryonic leaf.

Q: Sepals are: A) pollen-producing structures. B) leaf-like structures that protect a flower before it opens. C) pollen receptacles on a carpel. D) insect-attracting structures of the flower.

Q: The outer portion of the "ground tissue" of a stem is referred to as its: A) cortex. B) pith. C) sepal. D) mesophyll.

Q: Guard cells are responsible for: A) transport of water and minerals. B) protection of a leaf. C) regulating passage of carbon dioxide into the leaf. D) photosynthesis.

Q: Mesophyll cells are primarily responsible for: A) transport of water. B) protection of a leaf. C) regulating passage of carbon dioxide into the leaf. D) photosynthesis.

Q: The structure that attaches a leaf to the rest of the plant is the: A) blade. B) stoma. C) petiole. D) stem.

Q: About 90 percent of water absorbed through roots is lost to the atmosphere due to the process of: A) transpiration. B) expiration. C) perspiration. D) photosynthesis.

Q: The major advantage provided to plants by root hairs is: A) needle-like points for drilling through hard or rocky soil. B) ability to produce new taproots. C) underground asexual reproduction. D) greatly increasing absorptive surface area.

Q: Which kind of root system consists of a large central root and numerous lateral roots? A) fibrous B) taproot C) needle-like D) spinous

Q: The trap of a carnivorous plant such as the Venus flytrap is what plant structure? A) stem B) leaf C) fruit D) flower

Q: Bryophytes lack: A) chlorophyll. B) spores. C) gametes. D) vascular tissue.

Q: Besides cell walls, features often found in plant cells but not in animal cells are: A) spindle-shaped centrioles. B) water-filled central vacuoles. C) mitochondria. D) nuclei. E) cell membranes.

Q: What trend do we observe as we look at alternation of generations and plant kingdom evolution? A) The sporophyte generation is dominant in more advanced plants. B) The gametophyte generation is dominant in more advanced plants. C) Only ferns show a significant gametophyte generation. D) Only gymnosperms show a significant sporophyte generation.

Q: In alternation of generations in all plants, the multicellular haploid (1n) organism is referred to as the: A) zygote. B) gamete. C) sporophyte. D) gametophyte.

Q: In all plants, the diploid (2n) phase produces: A) sperm and/or eggs. B) flowers. C) spores. D) roots.

Q: Woody plants have which two compounds in their cell walls? A) chlorophyll and cellulose B) cellulose and lignin C) chitin and cellulose D) chitin and lignin

Q: Plants are different from all other photosynthetic organisms in that they: A) are eukaryotic. B) are green. C) have photosynthetic pigments. D) develop from embryos.

Q: Which of the following is characteristic of plants? A) chloroplasts B) hyphae C) a mycelium D) a cell wall made of chitin

Q: Refer to the figure below, and then answer the question that follows. The missing label indicated by a "3" corresponds to the:A) multicellular sporophyte.B) multicellular gametophyte.C) gametes.D) spores.

Q: Refer to the figure below, and then answer the following question(s). The missing label indicated by a "2" corresponds to the:A) cell wall.B) central vacuole.C) cell membrane.D) chloroplast.

Q: Refer to the figure below, and then answer the following question(s). The missing label indicated by a "1" corresponds to the:A) cell wall.B) central vacuole.C) cell membrane.D) chloroplast.

Q: Although they do not possess the nervous and muscular systems animals do, plants are able to physically respond to their environments. Evaluate and support this statement.

Q: In some areas of the world where there are large numbers of pines, everything is covered in the spring with a yellow dust that turns out, upon examination, to be pine pollen. Why must conifers produce so much pollen, and why do we not see as much pollen produced by a field of flowers?

Q: The story of plant evolution could be described as a story of how plants broke their dependence on aquatic existence. Explain how you could support this statement.

Q: Movement of the hormone ________ to different areas of a plant to promote growth is one of the ways a plant is able to respond to external signals.

Q: ________ is the angiosperm tissue that is intended for nutrition of the embryo and not animal seed dispersal but is nonetheless an important food source for people. ________ and ________ are examples of crops in which the endosperm is an important food source for people.

Q: Ginkgo biloba belongs in the plant group ________.

Q: The three main kinds of seedless vascular plants are: ________, ________, and ________.

Q: A spore growing into a plant that will produce sperm or eggs describes the ________ generation of a plant's life cycle.

Q: Match the following.A) process that produces spores in plantsB) process that produces gametes in plantsC) the diploid (2n) part of a plant's life cycleD) product of gamete fusionE) the haploid (1n) part of a plant's life cycleSporophyte

Q: Match the following.A) process that produces spores in plantsB) process that produces gametes in plantsC) the diploid (2n) part of a plant's life cycleD) product of gamete fusionE) the haploid (1n) part of a plant's life cycleMitosis

Q: Match the following.A) process that produces spores in plantsB) process that produces gametes in plantsC) the diploid (2n) part of a plant's life cycleD) product of gamete fusionE) the haploid (1n) part of a plant's life cycleZygote

Q: Match the following.A) process that produces spores in plantsB) process that produces gametes in plantsC) the diploid (2n) part of a plant's life cycleD) product of gamete fusionE) the haploid (1n) part of a plant's life cycleMeiosis

Q: Match the following.A) process that produces spores in plantsB) process that produces gametes in plantsC) the diploid (2n) part of a plant's life cycleD) product of gamete fusionE) the haploid (1n) part of a plant's life cycleGametophyte

Q: Match the following. Answers may be used more than once.A) seedless vascular plantB) bryophyteC) angiospermD) gymnospermFerns

Q: Match the following. Answers may be used more than once.A) seedless vascular plantB) bryophyteC) angiospermD) gymnospermwrapped in burrs

Q: Match the following. Answers may be used more than once.A) seedless vascular plantB) bryophyteC) angiospermD) gymnospermSpruce tree

Q: Match the following. Answers may be used more than once.A) seedless vascular plantB) bryophyteC) angiospermD) gymnospermLiverwort

Q: Match the following. Answers may be used more than once.A) seedless vascular plantB) bryophyteC) angiospermD) gymnospermClub moss

Q: A single type of pinecone is responsible for the production of both pollen and eggs.

Q: Endosperm is the nutritional tissue found within a seed.

Q: Some species of mosses have pollen that does not have to move through water to reach an egg.

Q: Horsetails are a type of seedless vascular plant.

Q: As a more recently evolved plant group, angiosperms completely lack a gametophyte generation.

Q: Ferns differ from mosses in that ferns contain vascular tissue and mosses do not.

Q: The life cycle of flowering plants contains both sporophytes and gametophytes.

Q: The life cycle of mosses contains only a haploid generation.

Q: In plant life cycles, eggs and sperm are produced by mitosis.

Q: In plant life cycles, meiosis produces spores.

Q: Diminished rewards of photosynthesis in winter along with the negatives of water loss and leaf damage cause many trees to exhibit: A) photoperiodism. B) dormancy. C) thigmotropism. D) phototropism.

Q: Trees that intentionally lose their leaves according to coordinated, seasonal schedules are: A) deciduous. B) gametophytes. C) sporophytes. D) thigmotropic.

Q: Long-night plants that only flower when they encounter a certain minimum number of hours of darkness are an example of: A) geotropism. B) thigmotropism. C) phototropism. D) photoperiodism.

Q: You see a plant stem wrapped around a telephone pole, spiraling upward. This plant is demonstrating: A) geotropism. B) thigmotropism. C) phototropism. D) photoperiodism.