Life Science Review #2

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Across
  1. 3. This is the actions of organisms in response to stimuli.
  2. 7. The leaf of a fern plant.
  3. 8. A vertebrate whose body temperature is regulated by its internal heat, and that has skin covered with hair or fur and glands that produce milk to feed its young.
  4. 9. The process that breaks down complex molecules of food into smaller nutrient molecules.
  5. 10. An electrical message that carries information in the nervous system.
  6. 14. This is the exchange of oxygen and carbon dioxide between an organism and its environment.
  7. 16. A colored chemical compound that absorbs light.
  8. 17. An organism whose cells contain a nucleus.
  9. 18. A flower structure that encloses and protects ovules and seeds as they develop.
  10. 19. A plant that produces seeds directly on the scales of cones—not enclosed by a protective fruit.
  11. 22. This is a type of behavior that animals are born with and that helps them to survive.
Down
  1. 1. A vertebrate whose body temperature is determined by the temperature of its environment, and that lives its early life in water and its adult life on land.
  2. 2. This is the growth or movement of a organism (usually a plant), in response to a stimulus.
  3. 4. This is when a plant grows towards water. Most of the time, it is the plant's roots that grow towards water since water is absorbed by the roots.
  4. 5. The conditions that surround someone or something. These conditions and influences affect the growth, health, progress, etc., of someone or something.
  5. 6. consisting of more than one cell, and having differentiated cells that perform specialized functions. Most life that can be seen with the naked eye is this.
  6. 11. This is the part of the plant which is above ground and specialized for photosynthesis. It is typically flat, thin and contains chlorophyll.
  7. 12. This is an animal that lives by preying on other animals.
  8. 13. This is an organism that breaks down and gains nutrients from dead organisms.
  9. 15. This kind of cell has a large central vacuole and a cell wall.
  10. 20. A mammal whose young are born at an early stage of development, and which usually continue to develop in a pouch on their mother's body.
  11. 21. The plant structure that contains a young plant and a food supply inside a protective covering.