Anatomical similarities that represent variations on a structural theme present
ID: 168544 • Letter: A
Question
Anatomical similarities that represent variations on a structural theme present in a common ancestor are said to be analogous.
True
False
Darwin’s finches are an example of sympatric speciation.
True
False
Which of the following is not a characteristic of a K-selected population?
long-lived
extensive parental care
produce few offspring
produce many offspring
Grain is eaten by cows, and cows are eaten by humans. If the ecological transfer efficiency between each trophic level is 10%, how much grain is required to produce 70 kg of human biomass?
70,000 kg
7,000 kg
700,000
700 kg
Seastars decrease species richness in intertidal zones of the Pacific northwest.
True
False
Which of the following is characteristic of K-selected populations?
small offspring
offspring with good chances of survival
many offspring per reproductive episode
a high intrinsic rate of increase
Acquired traits can be inherited.
True
False
Which of the following is not an assumption of Hardy-Weinberg?
no migration
no mutation
nonrandom mating
large population size
The sum total of a species’ use of the biotic and abiotic resources in its environment is its ecological niche.
True
False
Which mode of selection favors individuals at one end of the phenotypic range?
disruptive
stabilizing
directional
natural
long-lived
extensive parental care
produce few offspring
produce many offspring
Explanation / Answer
Answer 1: False
Explanation: Analogous are those structures which have similar performing actions, but are anatomically different and belong to different ancestors.
Answer 2: False
Explanation: Darwin's finches are an example of allopatric speciation.
Answer 3: Produce many offsprings
Explanation: K-selected species have the characteristics that they are long lives, they produce few offspring and carry out extensive care of their offsprings.
Answer 4: 7000 kg
Answer 5: False
Explanation: Seastars are keystone species which increase the species richness of the intertidal zones.
Answer6;Offsprings with good chances of survival.
Answer 7: True
Explanation: Lamarck had first hypothesized that acquired traits could be inherited. Though it was disapproved, but nowadays it can be proved by epigenetics.
Answer 8: No random mating
Explanation: Hardy-Wienberg's assumptions were large population, no mutation, no migration and random mating.
Answer 9: True
Answer 10: Directional selection