Science test

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oknels414
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268982
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Science test
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2014-04-03 15:43:36
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plant science test
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Plant science test
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  1. The process that plants use to make food is __________________.
    Photosynthesis
  2. The process of moving _________ from a stamen to a pistil is ______________.
    • pollen
    • pollination
  3. A chemical that helps plant cells grow larger is a(n) _____________________.  Do plants make their own of this chemical?
    growth hormone - YES
  4. In asexual reproduction, a(n) _______________ is a single plant cell that can grow into a new plant.
    spore
  5. _____________ and ______________ are tubes that carry materials through a plant.
    Phloem and xylem
  6. A tiny new plant inside a seed coat is called a(n) ______________________.
    embryo
  7. Explain how plants make sugar for food.
    They use sunlight (energy), water, and carbon dioxide to make sugar and oxygen. The process is called photosynthesis.
  8. Explain how all plants are the same in some ways and different in other ways.
    SAME - they perform photosynthesis, have roots

    DIFFERENT - DNA, look, how they reproduce
  9. Explain what plants have in common with animals.  How are they different?
    Both plants and animals are living and they need water and food to live.  Plants make their own food and animals don't.
  10. Explain how cells in a plant have different shapes and different jobs.
    Cells have different jobs and shapes to help the plant live and carry out photosynthesis and reproduction.  Some cells also protect the plant.  Spores, egg, and sperm help in reproduction.  Chloroplasts help in photosynthesis.
  11. What is the difference between monocot and dicot?
    Monocots - veins in leaf are parallel, fibrous root systems, seed has one coteyledon

    Dicots - veins in leaf branch out, taproot systems, seed has 2 coteyledons
  12. Two types of root systems are called taproot and ____________ root systems.
    fibrous
  13. Two types of plant reproduction are:
    sexual or asexual
  14. How does chlorophyll help a plant?
    Chlorophyll absorbs light energy in photosynthesis
  15. Describe the structures of a plant and how they give the plant food, water, support, growth, protection, or the ability to reproduce.
  16. What is the grainy, yellow powder made at the top of each stamen?
    Pollen
  17. What is a pistil?
    the female part of a flower
  18. Sexual reproduction requires the passing of DNA from ______________ parent(s) to their offspring.
    TWO
  19. In asexual reproduction, _____________ of the genetic information comes from one parent.
    ALL - no sperm or egg involved in asexual reproduction
  20. Growth of a vine around a post is an example of ________________.
    thigmotropism
  21. Stems tend to grow ___________ the direction of gravity.
    Against
  22. Plant cells can increase in size when _______________ take on water.
    vacuoles
  23. Ways that plants change their direction of growth in response to the environment is called ____________.  This helps the plant better suit its needs.
    tropism
  24. When roots grow downward as a result of gravity it is called ____________
    gravitropism
  25. A plant's growth response to touching an object is called ______________
    thigmotropism
  26. A flower bending toward the light is a type of _______________.
    Phototropism
  27. Leaves are made up of:
    Cells and tissues
  28. Where does the process of photosynthesis take place in the plant?
    In the chloroplasts found in the cells of a plant's leaves
  29. Unlike animals, plants make their own _______________.
    Food
  30. What is the outside layer of the of a leaf called and what does it do?
    Epidermis tissue - protection
  31. What is the inner tissue of a plant's leaf called and what is it's function?
    Spongy tissue - has spaces for air to pass through
  32. What does the vessel tissue of a leaf do?
    carries food and water to other parts of the plant
  33. What are the 3 types of leaf tissue?
    • Epidermis tissue
    • Spongy tissue
    • Vessel tissue
  34. Plants are a major source of __________ in the Earth's atmosphere.
    oxygen
  35. The sugar made from photosynthesis is sometimes stored by the plant to use at night as ______________.
    Starch
  36. What is cellulose?
    When thousands of sugars combine together and make up the strong cell wall of plants
  37. Where is most of the water absorbed by the plants?
    By the roots from the soil
  38. Does a plant make more sugar on cloudy days or sunny days?
    SUNNY
  39. Plants breathe out _____________ and humans/animals breath out ______________.
    Oxygen and carbon dioxide
  40. What is the role of the stem?
    It holds the plant closer to the sunlight and also supports the leaves, fruit, and flowers.  If it is a thorny stem, it is protecting the plant.
  41. What is the role of xylem?
    to carry materials (like water) from the roots to the leaves to use in photosynthesis
  42. Xylem and phloem are only found in ______________ plants.
    vascular
  43. What is the role of phloem?
    to carry sugar away from the leaves after photosynthesis to the rest of the plant
  44. What is bark made of?
    Old dead phloem pushed to the surface makes up bark - bark protects the new phloem underneath it
  45. Are there different types of stems?
    Yes, some are woody and some are not - the woodier a stem the more xylem it has
  46. What is a taproot?
    A large root that grows straight down - like carrots, radishes, etc.
  47. What is a fibrous root system?
    many roots grow out in all directions
  48. What is the function of the root?
    They anchor a plant and store food and absorb water/nutrients
  49. Flowers are responsible for plant __________________.
    Reproduction
  50. If a plant does not have flowers, can it still reproduce?
    Yes
  51. What is the stamen?
    The male part of the flower - it holds the pollen
  52. Can a single flower have multiple stamens and pistils?
    Yes
  53. Do all flowers have both stamens and pistils?
    No
  54. What are imperfect flowers?
    they only have either a stamen or pistil
  55. What are perfect flowers?
    They have both a stamen and a pistil
  56. Where are egg cells found in the flower?
    In the pistil
  57. What are composite flowers?
    a flower that is made up of hundreds of smaller flowers, ex - sunflowers
  58. What is the tissue at the top of the stamen called?
    antinnea
  59. What is the tissue at the top of the pistil called?
    stigma
  60. In plants, sexual reproduction occurs where?
    in the flowers
  61. ___________ contains all of the information for making flowers, leaves, and every part of the plant.
    DNA
  62. Why would astronauts take plants into space with them?
    To grow their own food and plants may also clean the air for the astronauts
  63. What are two factors that affect how different plants grow?
    DNA and environment (different plants have different environment needs to grow like amount of water and temperature)
  64. What are the first steps in a new plant growing?
    a seed will sprout/germinate, roots will grow down and a stem will grow up
  65. What are a seed's 3 main parts?
    seed coat - protects the embryo and endosperm

    embryo - has cotelydons/seed leaves

    endosperm
  66. Do animals help in the spreading of seeds to grow new plants? What are other ways seeds are spread?
    YES animals spread seeds and also water spreads seeds
  67. Name the pollination steps:
    • 1) Pollen forms on stamen
    • 2) Pollen sticks to stigma at end of pistil
    • 3) Pollen tubes grow down the pistil to the egg cells
    • 4) Sperm from the pollen move down the tubes to the eggs
    • 5) Once the sperm reaches the eggs - fertilization occurs and combines the DNA
    • 6) A seed is formed with a tiny plant inside
  68. If a plant with white flowers pollinates with a plant with red flowers, what color may the new plants flowers be?
    Pink
  69. Does pollination only occur between the stamen and pistil of a single plant?
    No - it can be between 2 separate plants
  70. How are different ways that pollen can be moved?
    wind, water, insects, animals

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