SSAT Middle Level Reading : Making Inferences in Narrative Science Passages
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Example Question #2 : Analyzing The Text In Science Passages
Adapted from "Some Strange Nurseries" by Grant Allen in A Book of Natural History (1902, ed. David Starr Jordan)
Many different types of animals employ one of two strategies in raising their young. Certain animals, called “r-strategists,” turn out thousands of eggs with reckless profusion, but they let them look after themselves, or be devoured by enemies, as chance will have it. Other animals, called “K-strategists,” take greater pain in the rearing and upbringing of the young. Large broods indicate an “r” life strategy; small broods imply a “K” life strategy and more care in the nurture and education of the offspring. R-strategists produce eggs wholesale, on the off chance that some two or three among them may perhaps survive an infant mortality of ninety-nine per cent, so as to replace their parents. K-strategists produce half a dozen young, or less, but bring a large proportion of these on an average up to years of discretion.
Which of the following is suggested by the passage's wording?
Most animals abandon their young to fend for themselves.
Biology is only the author's hobby, not the field in which he works.
Many r-strategists reproduce by laying eggs.
K-strategist animals are in short supply.
It would benefit the environment to ensure the survival of the entire brood of r-strategists.
Many r-strategists reproduce by laying eggs.
Twice in the passage, when the author discusses r-strategists, he refers to them laying eggs. This first happens in the second sentence ("Certain animals, called 'r-strategists,' turn out thousands of eggs with reckless profusion"), and later in the fifth sentence ("R-strategists produce eggs wholesale"). Based on the author's wording, we can correctly assume that many r-strategists reproduce by laying eggs. None of the other answer choices are supported by the passage: nothing suggests that the author pursues biology as a hobby instead of a career; the fact that relative numbers of r-strategists and K-strategists are not discussed in the passage makes it impossible to assert that "most animals abandon their young to fend for themselves" or that "K-strategist animals are in short supply"; and nothing about environmental effects is discussed or suggested either, so "it would benefit the environment to ensure the survival of the entire brood of r-strategists" cannot be the correct answer either.
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