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Science gr.6

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  • A.............. is a waxy, waterproof layer that covers the leaves and stems of most plats
    cuticle
  • A group of similar cells that perform a specific function is called
    tissue
  • The energy for photosynthesis comes from the.............
    sun
    moon
  • A plant stem that grows towards light is an example of a
    positive gravitropism
    negative thigmotropism
    positiv thigmotropism
    negative gravitropism
  • Two structures found in plant cells but NOT in animal cells are
    vacuole and nucleus
    call wall and call membrane
    cell wall and chloroplasts
    chloroplasts and cell membrane
  • During photosythesis, plants produce carbon dioxide
    oxygen
    vascular
  • Which of the following is thought to be the ancestor of land plants?
    green algae
    bacteria
    ferns
    red algae
  • When chlorophyll in leaves breaks down
    the plant becomes very active
    red pigments disappears
    yellow and orange pigments become visible
    photosynthesis begins
  • Irises and lettuce flower when nights are shorter than a critical length. They can be describes as
    short-day plants
    day- neutral plants
    long day plants
    dormant plants
  • The process by which plants make food is called
    photosynthesis
  • The internal transporting system through which water, minerals and food move inside the plant is called
    vascular tissue
  • The sac inside a plant cell where water, wastes and food are stored is called an
    vascular
  • Organisms that produce their own food are called
    heterotrophs
    autosomes
    herbiroves
    autotrops
  • The green pigment found in specialized plant structures is called
    cuticle
    chlorophyll
  • Nearly all pants are .....
    multicellular
    unicellular
  • The sac inside a plant cell where water, food and wastes ate stored is the
    chloroplast
    chlorophyll
    vacuole
    cutie
  • The system of tubelike structures inside a plant through which water, minerals and food move is called ....... tissues.
    root
    vascular
  • To which three stimuli do plants respond?
    light, gravity, and soil conditions
    touch, gravity and chlorophyll
    touch, gravity and light
    water light and touch
  • The cell wall helps a plant retain water
    oxygen
    cuticle
  • A.................. is a structure inside a plants cell in which food is made.
    chloroplasts
  • The green pigment called ............................ is necessary to the food-making process in plants.
    chlorophyll
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