38.An organ system is a group of organs that: A. are made of similar cells. B. work together in performing all the functions in a multicellular organism. C. work together in performing a major body function. D. are made of similar tissues. 39.Which of the ff. shows the correct role of the organisms involved in an interaction? A. Earthworm: Host; Leaf: Parasite B. Tick: Parasite; Dog: Host C. Tree: Host; Orchid: Prey D. Snake: Predator; Chicken: Commensalism 40.What interaction is taking place among the fishes shown in the picture? A. Mutualism B. Parasitism C. Competition D. Predation
