PrepTest 122, Section 3, Question 25
Every culture that has adopted the cultivation of(465 more words not shown)
The passage contains information sufficient(8 more words not shown)
- AIn rice plants,(17 more words not shown)
- BIn rice plants,(18 more words not shown)
- CRice is an(19 more words not shown)
- DIn rice plants,(16 more words not shown)
- EAlthough rice is(15 more words not shown)
Reading the passage
We have an account of how C-4 plants work and a final list of examples. An inference can connect those statements, but it still needs support from this account. Familiar facts about a crop's importance elsewhere aren't a substitute.
Working the answers
- A
This moves the barrier to the wrong structures. The protected cells contain rubisco and make sugars; they are separate from the structures where water is split.
- B
Nothing says the released oxygen first binds to another molecule. Keeping oxygen away from rubisco doesn't require that additional step.
- C
High productivity is supported. Feeding large portions of the world's population and cultivation by widely separated cultures are additional claims that aren't supplied about rice. Familiarity with rice doesn't fill those gaps in this question's evidence.
- DCorrect
The final sentence includes rice among the C-4 plants. The preceding explanation places rubisco in bundle sheath cells around the vascular structures. Applying that stated C-4 arrangement to one of the listed examples gives us D.
- E
We aren't given a comparison of how widely rice and maize are cultivated. The shared productivity description doesn't establish that ranking or a comparison of their nutritive value.
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