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vertebrates
animals with a backbone
invertebrates
animals without a backbone
radial symmetry
imaginary lines can be drawn through a central point to divide a plant or animal into two mirror images
bilateral symmetry
only one line of symmetry can be drawn to divide an animal into halves that are mirror images
adaptations
structures and behaviors that allow animals to perform their functions
organization of an animal's body
cells, tissues, organs, organ systems, organism
chlorophyll
a green pigment found in the chloroplasts of plants, algae, and some bacteria
photosynthesis
a food-making process plants use to make food
cuticle
a waxy, waterproof layer on a plant
vascular tissue
a system of tubelike structures inside a plants through which water, minerals, and food move
nonvascular plants
plants that lack vascular tissue for transporting materials
vascular plants
plants with vascular tissue
phloem
vascular tissue through which food moves
xylem
water and minerals travel from the roots upward through this
vacuole
a large storage sac to hold food, water and waste that can expand and shrink
chloroplasts
organelles that make food for plants
homeostasis
keeping internal body conditions stable
tissues
a group of similar cells that performs a specific function