Which element is considered an essential macronutrient for plants?
a. oxygen
b. boron
c. lithium
d. silicon
e. molybdenum
ANSWER: a
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Which of the following INCORRECTLY states a principle of the chromosome theory of inheritance?
A. Genes are transmitted from parent to offspring via chromosomes. B. Gametes contain either a maternal or paternal set of chromosomes. C. Somatic cells contain a maternal and paternal set of chromosomes. D. The paternal and maternal chromosomes assort randomly during meiosis. E. Gametes are haploid and somatic cells are diploid.
The first known sketches of human chromosomes were drawn in
A) 1776. B) 1814. C) 1882. D) 1951.
You have been studying the relationship between jackals and tigers in India. Until recently, the only relationship you have observed is that jackals will associate themselves with a particular tiger and follow it at a safe distance in order to feed on the big cat's kills. However, recently you observed a jackal alerting a tiger to a kill with a loud cry. If you continue to observe this alerting behavior, you might change the categorization of the jackal/tiger relationship from ___________ to __________________.
A. mutualism; parasitism B. mutualism; commensalism C. commensalism; mutualism D. parasitism; mutualism E. competition; predation Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about symbiotic relationships how the different behaviors of the animals relate to each type of symbiosis? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
According to the equation for population growth rate, if two populations have the same death rates, then the population with r = 2 will increase more rapidly than a population with r = 4
Indicate whether the statement is true or false