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Unit 3 Biology

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  • They are organs that plant uses to create it’s most own nutrients.
    Leaves
  • Plant nutrition consists of three processes: absorbing water and minerals, ___, and carrying out photosynthesis.
    absorbing carbon dioxide
  • It occurs in response to physical contact. This phenomenon is evident in creepers or climbing plants which grow up around the objects with which they come into contact.
    Thigmotropism
  • They are plants with seeds in a fruit.
    Angiosperms
  • These are the tubes located inside the stems where the substances are distributed throughout the plant.
    Vessels
  • It occurs in response to water. This occurs in roots, which tends to grow towards water in the soil.
    Hydrotropism.
  • It produces the male gametes.
    Stamens
  • It occurs in response to light. For example, the stems of plants grow towards the light.
    Phototropism
  • Sexual reproduction is carried out via gametes. True or False?
    True
  • When plant respire, they absorb oxygen which is used by their mitochondria to obtain energy from the carbohydrates produce there. True or False?
    True
  • They are plants with seeds that are not in a fruit.
    Gymnosperms
  • These are plant responses in which plants direct their growth towards or away from a stimulus.
    Tropisms
  • It occurs in response to gravity. This is most evident in roots, which grow in the direction of gravitational pull (downwards).
    Gravitropism
  • Plants are constantly respiring. True or False?
    True
  • Respiration produces gas and a waste product, carbon dioxide. True or False?
    False, it produces water.
  • It produces female gametes.
    Pistil
  • They grow into the soil and their job is to absorb water and minerals.
    Roots
  • It is the mixture of water and minerals absorbed through the roots.
    Xylem sap
  • Carbon dioxide enters the plant mainly through tiny pores called ___.
    Stomata
  • It contains the reproductive organs of the plant.
    Flowers
  • Plants with seeds, are called ___.
    Spermatophytes
  • They keep the plants erect and hold up the leaves.
    Stem
  • Plants are ___ because they produce their food through photosynthesis.
    autotrophic
  • Sexual reproduction in plants can be carried out through bud formation, fragmentation or spores. True or False?
    False, asexual reproduction
  • Photosynthesis produces carbon dioxide as a waste product. True or False?
    False, it produces oxygen.