Which principle states that no two species competing for the exact same resources can coexist?
A. Competitive exclusion principle
B. Dominance species principle
C. Complex community network principle
D. Resource partitioning principle
Answer: A
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Dmitri Ivanovski demonstrated that TMV was not spread via bacteria by
A. transmitting sap of infected plants from generation to generation. B. filtering sap from an infected plant through pores smaller than bacteria, and then applying it to a healthy plant. C. spraying sap from an infected plant onto a healthy plant. D. sterilizing sap from an infected plant and then applying it to a healthy plant. E. treating an infected plant with a broad spectrum of antibiotics before extracting sap.
Describe the general relationship that may exist between mutations and cancer
What will be an ideal response?
Colostrum is:
a. a protein fluid produced by the mammary gland. b. the fluid secreted by the vagina in response to sexual stimulation. c. the hormone that stimulates lactation. d. the hormone that stimulates ejection of milk into the breasts. e. a fluid secreted by the uterus during menstruati
There are no trees in the tundra because:a
of the short growing season. b. of the limited supply of nutrients in the soil. c. of limited root penetration due to permafrost. d. of limited precipitation.
e. of low temperatures.