PrepTest 139, Section 3, Question 26

Difficulty4 of 5
Passage 4Calvaria major and the dodo hypothesis
The questionFull text in your LawHub copy of PrepTest 139

Calvaria major is a rare but once-abundant tree(473 more words not shown)

It can be most logically(36 more words not shown)

Reading the passage

What was Temple trying to explain? The apparent absence of new trees after the dodo disappeared. He assumed that Calvaria major had lost the ability to reproduce, then proposed that the missing bird explained that loss.

What we’re looking for

But Strahm found many trees younger than three centuries, and Speke found germination without abrasion. So the problem with this version of the hypothesis starts before the proposed cause: the complete loss of reproduction never happened. That is different from the genuine decline in the tree's population.

Working the answers

  • A

    This is not just a basically correct account with a few details wrong. Its central claim that reproduction had stopped is contradicted by the younger trees and continuing germination.

  • B

    The author initially presents a plausible idea and later gives counterevidence. This reverses that direction by calling the hypothesis vindicated.

  • C

    The tree study was outside Temple's principal bird research, but that true background detail does not make the hypothesis a valuable scientific achievement in the author's evaluation. The question asks how the author regards this challenged explanation.

  • D

    The author does not praise its precision or attention to historical detail. The timing helped Temple form the hypothesis, but later findings undermine the inference he drew from it.

  • E
    Correct

    The supposed state of affairs is the tree's inability to reproduce after the dodo vanished. Reproduction actually continued. Temple was therefore trying to explain a complete reproductive failure that did not exist, even though the population decline itself was real.

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