10. Which of the following performs fertilization during reproduction? A. Yeast B. Hydra C. Chicken D. Mushroom 12. Which of the following components is an example of biotic factor of an ecosystem ? A. Drought B. Earthquake C. Predator D. Minerals 13. A plant needs water, radiant energy, minerals, oxygen, and carbon dioxide to live. How are these requirements needed by plants categorized? A. Biotic components C. Abiotic components B. Climate D. Minerals 14. What type of relationship exists between dogs and humans? A. Commensalism B. Competition C. Mutualism D. Predation 15. In which type of relationships do organisms compete for survival? A. Competition B. Parasitism C. Mutualism D. Predation 16. Which of the following examples display mutualism? A. Algae living on corals B. Orchids attach itself on the trunk of a mango tree C. Butterfly feeding on nectar of a flower D. A bird making its nest on the branch of the tree.
