Questions on images of phyla members. See attached file for full problem description.© BrainMass Inc. brainmass.com October 24, 2018, 9:16 pm ad1c9bdddf
Questions based on images of phyla members.
Using a dichotomous key
Part 1: Submit a list , Organism 1 through Organism 7,(Attached) with your decision about the classification for each, as well as the choices you made for each step on the key. Spelling counts as does correctly identifying each organism. State exactly what you see on the key: Class Trematoda, or Phylum Porifera, for example. NO common names like worm, or snail.
names like worm, or snail.
The trick to using this key is to understand (or look up) the words used in each descriptive line. What is radial symmetry? What is bilateral symmetry?
If you know the common name of each organism, you may want to do research about the organism to determine, for example, if it has an internal or external skeleton.
Part 2: You are a geneticist working for a firm that specializes in plant biotechnology. Explain what specific parts (fruit, seeds, stems, roots, etc.) of the following plants you would try to alter by genetic engineering, what changes you would try to make, and why, on a) corn, b) tomatoes, c) wheat, and d) avocados.
Only a few hundred of the hundreds of thousands of species in the plant kingdom have been domesticated for human use. One example is the almond. The domestic almond is nutritious and harmless, but its wild precursor can cause cyanide poisoning. The oak makes potentially nutritious seeds (acorns) that contain very bitter-tasting tannins. If we could breed the tannin out of acorns, they might become a delicacy. Why do you suppose we have failed to domesticate oaks?View Full Posting Details