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TLS Online TPP Program
#Question id: 12347
#Section 1: Ecology
A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be . (Use decimal notation, not fractions or percentage)
TLS Online TPP Program
#Question id: 12346
#Section 1: Ecology
The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?
TLS Online TPP Program
#Question id: 12344
#Section 1: Ecology
The concept of punctuated equilibrium refers to
TLS Online TPP Program
#Question id: 12343
#Section 1: Ecology
Hybrids between some related species of plants are sterile because the parent plants had different chromosome numbers. Occasionally the chromosome number of such a hybrid plant doubles spontaneously. Which of the following best describes the descendants of those plants with the double chromosome number?
TLS Online TPP Program
#Question id: 12342
#Section 1: Ecology
Which of the following is a biological attribute that would most likely allow a species to become cosmopolitan in distribution?
TLS Online TPP Program
#Question id: 12340
#Section 1: Ecology
Keystone species are thought to have profound effects on the structure and composition of ecological communities because they