ISEE Upper Reading practice test

The passage’s lesson is that clear water is not the only sign of health because an ecosystem can depend on unnoticed particles. B restates the visitors’ opening impression, which the staff later outgrow. C reverses the problem: removing plankton-sized food was the filter’s harm, not its benefit. D is the overcorrection the last paragraph rejects: the lesson is not simply that cloudy water is good or clear water is bad.

Under the microscope, the interns saw that the new system removed many of the plankton-sized particles the corals had been catching. A is what the team first suspected, but both measurements were normal. B reverses the finding: particles were present before filtering and reduced after. C misapplies a later detail: the added screen was wide enough for copepods and larvae to drift through, and it was not what the samples showed.

The team changed the filter schedule to make it work better for the aquarium.

Dr. Velez asked for before-and-after samples only after temperature and salt had already tested normal, implying she suspected the filter itself was changing what remained in the water. The microscope work was not a second temperature or salt check, so B is false. She had already warned that clear water was not the only sign of health, so she was not trying to prove that clearer water meant healthier coral, and C is false. The samples showed the filter removing plankton-sized food particles, not merely that it cleared waste as designed, so D is false.

The second paragraph shows that the new filter made the water brilliantly clear while removing food particles, which is the unexpected problem (B). A misreads the diagnostic checks: temperature and salt were normal, yet the corals still opened less fully. C belongs to the third paragraph, where the team adds a coarser screen. D belongs to the fourth paragraph, where staff judge the aquarium by more than appearance.

The reef looked clean to visitors even as it lost plankton the corals needed, so the contrast shows that a system can look good while losing something important. A and B overstate the last paragraph, which rejects the simple claim that clear water is bad or cloudy water is good. D contradicts the team’s solution: they adjusted the filter and added a screen rather than abandoning filtration.

A reversed order can make an area look dense, while untouched paper remains the brightest highlight. A is wrong because guide marks, not impression order, place the paper. B is wrong because an unprinted highlight would not be covered by the darker color. C is wrong because the passage says reverse order can change density.

The printer rests the paper against the marks before every impression to register the separate blocks.

The passage presents control of position, order, pressure, and materials alongside small evaluated differences that can give related impressions distinct character. A is wrong because the prints are not identical copies. C is wrong because offsets are sometimes useful, not a replacement for precision. D is wrong because the space between colors also shapes meaning.

The slight offset creates a bright rim that makes a form “vibrate” against its background, a figurative way of saying the shape stands out with energy. A takes the verb literally. C describes a harmful misalignment later in the same paragraph, not this bright rim. D describes a one-sheet paper shift from the final paragraph.

The passage begins with layered blocks, then treats registration and offsets, then order and variation across an edition. B is wrong because the essay does not conclude that mechanical control makes identical sheets. C is wrong because bright rims are an example, not the opening, and misalignment is not the governing choice. D is wrong because overlapping pigments are not presented as the source of meaning.

The final comparison explains how repetition across sheets helps a viewer judge whether an edge records a temporary paper shift or a deliberate decision.

The passage moves from the flood’s unusual appearance to the evidence through which the company was held responsible for structural inadequacy. The claim that the substance prevented investigation conflicts with the sustained inquiry described. The claim favoring operating history reverses the passage’s distinction between surviving earlier loads and meeting engineering standards. The claim about establishing a new principle exceeds the final paragraph’s explicit qualification of the case’s historical importance.

The correct answer combines the finding of structural inadequacy with the author’s description of an early, conspicuous application of an existing accountability practice. The claim about leaks makes them sufficient evidence, although the passage considers them alongside engineering deficiencies. The claim about the first prominent use exceeds the passage’s description of an early application. The claim about mandatory testing invents a requirement imposed by the proceedings; the passage identifies missing testing as part of the tank’s history.

The passage distinguishes a generally plausible threat from evidence that the threat caused this specific collapse. Greater public fear would strengthen the claim’s appeal without connecting an attacker to the tank. Repeated fillings are precisely the kind of evidence the passage treats as insufficient to establish structural adequacy. Extensive destruction could result from the released molasses and would not by itself identify sabotage as the cause.

The correct answer captures the sentence’s contrast between observing that the tank once stood and obtaining sufficient grounds for a conclusion about its adequacy. A construction specification is relevant to the engineering investigation, but “standard” here concerns the sufficiency of the inquiry’s reasoning. A compensation rule concerns the consequences of assigning responsibility rather than the basis for reaching a finding. An admission procedure concerns whether testimony may be heard, whereas the sentence concerns what the evidence establishes.

The passage begins with the flood, turns to the tank’s earlier condition and the sabotage claim, and concludes with the inquiry and its qualified significance. It does not begin with a verdict or challenge that verdict’s influence. It mentions a missing test but does not compare proposed safeguards or explain decisions to reject them. It applies engineering standards to the case without tracing their development or demonstrating prevention of later failures.

The author treats the scrutiny of construction decisions as significant while acknowledging both the irreparable losses and earlier instances of builder accountability. Nothing suggests doubt about the engineering findings or special admiration for the amount paid. Explaining the logic of the sabotage claim does not amount to sympathy with the company’s position. The explicit recognition of lost lives and the qualification of historical novelty rule out unrestrained celebration and indifference.

The last paragraph says growth spreads outward from surviving patches, and that rough mortar holds moisture longer than smooth brick. Those two facts make the rough, adjacent area the more likely first foothold (C). A is wrong because a visibly clean surface is not the strongest sign of a suitable habitat. B is wrong because equal sun and rain do not make texture or proximity unimportant. D reverses the growth pattern: new lichen does not appear most readily far from established patches.

The surfaces are open to daylight while still protected from much of the road spray.

The passage uses road spray, light, moisture, texture, and existing patches to show why broad air improvement creates an opportunity but does not determine recovery by itself.

The author examines several clues and qualifies the wall-as-map image rather than reducing recovery to one factor.

The passage opens with uneven return, explains what a lichen needs on a wall, compares sheltered and sun-dried surfaces, generalizes that recovery depends on overlapping local conditions, and then supplies further evidence from expanding patches and rough mortar. Choice B treats the passage as a cleanliness ranking and a direct air map. Choice C makes shelter the single main condition. Choice D makes texture the controlling factor.

The clean wall’s slower recovery introduces evidence that less pollution is not sufficient without suitable shelter, moisture, light, and surface conditions.

The passage distinguishes evidence that birds respond to magnetic fields from evidence identifying the structures and processes responsible. The claim about chemical experiments assumes that a sensor has already been identified, although the connection to living birds remains incomplete. The claim about two separate senses turns a possible division of labor into an established finding. The claim about magnetic sensing itself being doubtful overlooks the opening experiments and confuses uncertainty about a mechanism with uncertainty about an observed response.

The beak cells were identified as immune cells rather than the proposed nerve endings, whereas laboratory cryptochrome findings have yet to establish how a living bird uses the effect. The receptor-and-signal comparison incorrectly treats the beak cells as established receptors and overlooks the stated presence of cryptochromes in retinas. The position-and-direction comparison assigns definite functions that the passage presents only as a possible division of labor. The comparison declaring both kinds of evidence failures denies the proposed physical response of magnetic particles and overstates the implications of ordinary vision.

The proposed experiment would distinguish a particular sensor’s contribution from the broader fact that magnetic fields affect birds. Equipment requirements are not the basis of the comparison. Sensitivity to small environmental changes concerns detecting an effect rather than identifying its cause. Representativeness outside the laboratory is not discussed as an advantage of the selective interruption.

The final paragraph introduces a possible division of labor and then favors an experiment that selectively interrupts a candidate sensor. It does not rank the observations or declare the chemical explanation the winner. Its allocation of different tasks remains hypothetical and does not resolve the earlier evidentiary gaps. Although it discusses navigational tasks, it continues examining sensory mechanisms and does not propose natural-route observations.

The reference links iron’s presence and disrupted orientation as observations requiring further investigation before a sensory mechanism can be identified. It does not predict that the behavioral findings will be overturned. It draws a parallel between interpretive problems rather than ranking anatomy above behavior. It also supplies no evidence that mineral particles and cryptochromes depend on the same structures.

The author recognizes the plausibility of both mechanisms while repeatedly requiring evidence that connects a candidate mechanism to its function. Confidence that chemical findings have displaced the mineral proposal conflicts with the possibility of complementary roles. Doubt that experiments can distinguish contributions conflicts with the proposed selective interruption. Confidence in behavior alone overlooks the author’s insistence that an altered heading does not identify the receiving apparatus.

The narration warmly follows Caleb’s changed assumption and reflects on locating a cause while stating the limits of a correct diagnosis.

The story proceeds from cleaning and focusing to sky evidence, an alternate target, later confirmation, and a limited diagnosis recorded for others.

Caleb moves beyond the nearest possible cause, gathers evidence for the cloud, and explicitly notes that other blurs can come from instruments.

Caleb’s earlier diagnosis depended on the blur moving across one part of a sky where other stars remained clear, and he acknowledges that instruments can cause other blurs. The new pattern reverses those observations and therefore redirects the investigation.

The phrase refers to the telescope’s selected focus adjustment, which Caleb confirms was correct.

The earlier cloud note supports Caleb’s current evidence, and his added time and target give later guides a useful starting point rather than a guaranteed answer.