Experiment: Fertilized chicken eggs were rotated daily in incubators for one group and left static in another.Observation: Rotated eggs showed higher hatch rates and healthier chicks.Question: What conclusion is most supported?
Correct answer: C. Rotation distributes nutrients evenly in developing embryos.
- A. Embryos develop faster when static.
- B. Rotation damages embryos.
- C. Rotation distributes nutrients evenly in developing embryos.
- D. Egg turning slows gas exchange.
Explanation
The correct answer is that rotation distributes nutrients evenly in developing embryos, as evidenced by the higher hatch rates and healthier chicks observed in rotated eggs. The other options are incorrect because they do not align with the observation or lack evidence to support them.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
Practise Scientific Reasoning
334 free Scientific Reasoning MCQs from Analytical and Logical Reasoning, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Analytical and Logical Reasoning questions like this
Analytical and Logical Reasoning is on 27 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Scientific Reasoning questions
Experiment: Two plant samples were placed in sealed jars, one with a lit candle, one without. Oxygen and CO₂ were measured after 12 hours.Observation: The candle jar had lower oxygen and higher CO₂ compared to the plant-only jar.Question: What is the likely explanation?
Experiment: To study circadian rhythm, rats were kept in constant darkness for two weeks. Their activity levels were monitored using motion sensors.Observation: The rats maintained a ~24-hour activity cycle despite no light cues.Question: What does this show?
Experiment: Scientists used a Geiger counter to test radiation absorption in plant leaves covered with aluminum foil vs. uncovered ones.Observation: Covered leaves showed near-zero radiation exposure while uncovered ones absorbed detectable radiation.Question: What conclusion can be drawn?
Experiment: Mice were injected with adrenaline and their blood pressure was measured every 10 minutes for an hour.Observation: Blood pressure spiked within 10 minutes and gradually normalized.Question: What physiological effect does adrenaline have?
Experiment: To examine kidney function, dye was injected into the bloodstream of two patients. Urine samples were analyzed at 10-minute intervals.Observation: Dye appeared in the urine of the healthy patient but not in the one with kidney damage.Question: What does this indicate?
Experiment: Sunflower plants were grown in windy vs. still conditions. Stem diameter and height were measured weekly.Observation: Wind-exposed plants had thicker stems but shorter height.Question: What does this suggest?