In a food chain, primary consumers occupy the first trophic level
____________________ Indicate whether the statement is true or false.
F, second
You might also like to view...
Abscisic acid is an important signal, transported from roots to the stem and leaves during times of water stress, that prevents:
A. additional auxin production B. ethylene buildup in the stems C. leaf drop D. phototropism E. stomatal opening
The most likely identification of an anaerobic gram-positive bacillus that produces spores is:
a. Bifidobacterium. b. Eubacterium. c. Eggerthella. d. Clostridium.
Why was the nucleus removed from the egg cell used to create Dolly, the cloned sheep?
a. to remove the mitochondrial DNA of the egg donor b. to test whether the genetic contribution from a sperm cell alone could produce a lamb c. to create a cloned sheep in the absence of DNA d. since the genome for the clone was supplied by the diploid mammary cell, the presence of the egg cell DNA would result in triploidy e. to see whether egg cell DNA injected into a sperm cell could produce a lamb
Which of the following vectors would be the best choice for gene transfer in plant cells?
A) Cosmid B) Bacterial artificial chromosome C) Bacteriophage vector D) Ti vector E) Plasmid