Biological Science Crossword Puzzle

QUESTIONS LIST:

• astmmetry : cannot be cut into equal halves
• bilateral symmetry : can be cut into left and right sides only
• radial symmetry : body parts are arranged in a circle around a center point
• exoskeleton : skeleton is on the outside of the body
• endoskeleton : skeleton is on the inside of the body
• invertebrate : does not have a backbone
• parasite : an organism that lives in or on another organism, harming it
• molting : shedding and replacing of an exoskeleton, skin, or feathers
• metamorphosis : changes in form as animal becomes an adult
• vertebrate : has a back bone
• gills : organs that exchange carbon dioxide for oxygen in water
• amnion : protective membrane that surrounds the embryo
• ectotherm : animal that heats its body from its environment
• endotherm : animal that generates its body heat from the inside
• placenta : connects fetus to mother for nutrient and gas exchange