Think of a marine organism that you are familiar with and describe all aspects of its niche, including both biotic and abiotic characteristics of the niche
What will be an ideal response?
An example could be a coral polyp. Its niche is that of a builder of coral reefs in tropical and subtropical areas. It is a voracious predator of planktonic organisms, but at the same time it is involved in a mutualistic symbiotic relationship with zooxanthellae. Polyps are limited in their distribution by the amount of sunlight in the water and the temperature of the water. In addition, they are preyed upon by coral-eating fishes and echinoderms and succumb to various diseases.
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Due to its unusual habitat (inside the digestive tracts of other animals), the tapeworm lacks _____
A) a reproductive system B) a mouth C) a digestive tract D) a mouth and a digestive tract E) a reproductive and digestive system
The crater believed to be the site of the meteor impact that caused the extinction of the dinosaurs is on the coast of:
A. Alaska B. Kenya C. Mexico D. India E. China
Which sequence-tagged sites can be identified using cDNA libraries?
a. VNTR b. SSLP c. EST d. STR
All of the following are true of every cell of
the early human embryo EXCEPT that a. each has the same genes as all the others. b. each can give rise to an entire human. c. they are undifferentiated. d. all will differentiate alike. e. all have maternal messages