University:
Texas A&M University
Course:
BIOL 111 | Introductory Biology I
Academic year:

2021
Views:

391

Pages:

1
Author:

omiliar74be

Classify the Symbiotic Relationships Activity: Symbiotic Relationships Classification Student Name: ___________________________ Teacher: ________________________________ Date: ___________ Period: _________________ Classify the following symbiotic relationships under mutualism (M), commensalism (C), amensalism (A) or parasitism (P). __M__E. coli bacteria in the human large intestine produce vitamin K which humans need. The large intestine provides a place to live and nourishment for the bacteria. __P__A person is infected with tapeworm from eating raw pork. The tapeworm absorbs nutrients from the small intestine and the person becomes sick. __C__Rhizobia bacteria living in association with plant roots turn nitrogen from the air into compounds the plant can use. The benefit to the bacteria is unclear. __M__The yucca moth lays eggs in the ovary of the yucca flower. At the same time, the moth pollinates the flower. __M__One type of algae lives inside reef-building coral. The algae cause the coral to grow faster and the coral provide nutrients that the algae can use. __A__The black walnut tree naturally secretes a substance called juglone from its roots that inhibits the growth of some nearby plants causing the other plants die. __C__Small plants called epiphytes grow on the branches of rain forest trees without harming the trees. Up in the branches, the epiphytes can get enough light and water, and nutrients from the tree without competing for resources. __M__Lichens are made up of algae and fungi living together. The fungus relies on food provided by the algae. The algae are “housed” and protected from drying out by the fungus. __A__When sheep and cattle trample trails into grass it kills the grass without the sheep or cattle’s knowledge. __P__Crown gall disease weakens plants and slows their growth. The bacterium that causes the infection obtains nutrients from the plants.