LEAP 2025 Biology Practice Test with Complete Solutions

LEAP 2025 Biology Practice Test with Complete Solutions Which claim is supported by the information in Graph 1 and Graph 2? A. The mass of the eggs and the number of eggs produced by sockeye salmon are independent of the females mass. B. The mass of the eggs produced by sockeye salmon depends on the female's average age at reproduction, but the number of eggs does not. C. The number of eggs and the mass of the eggs produced by sockeye salmon depend on the amount of matter stored by the female. D. The number of eggs produced by sockeye salmon decreases with female body length, but the mass of the eggs does not. C. The number of eggs and the mass of the eggs produced by sockeye salmon depend on the amount of matter stored by the female. Develop a model that can be used to explain the stages of growth and development that result in a salmon fry. 1. Sperm fertilizes egg. 2. Genetic material is evenly divided. 3. Embryo changes from two to four cells. 4. Cells differentiate. 5. Specialized tissues and organs are produced. Chum salmon fry average 3.8 cm in length, compared to 3 cm for pink salmon fry and 10 cm for coho salmon fry. Based on the information in Graph 3, chum salmon fry are likely to eat prey that is ______ prey eaten by the pink salmon fry and ______ prey eaten by the coho salmon fry. This is because as a salmon's size increases, its matter intake needs ______. Based on the information in Graph 3, chum salmon fry are likely to eat prey that is larger than prey eaten by the pink salmon fry and smaller than prey eaten by the coho salmon fry. This is because as a salmon's size increases, its matter intake needs increase. Which statement best explains how salmon obtain and use matter to support their biological functions? A. Salmon use complex, carbon-based molecules obtained directly from seawater and the atmosphere to produce other complex molecules, such as fats. B. Salmon use the carbon, hydrogen, and oxygen atoms obtained directly from seawater and the atmosphere to form sugars and proteins. C. Salmon break bonds in complex food molecules to release the carbon, oxygen, and hydrogen atoms needed for the formation of other molecules. D. Salmon break down carbon, hydrogen, and oxygen atoms obtained from food into smaller, energy-rich elements. C. Salmon break bonds in complex food molecules to release the carbon, oxygen, and hydrogen atoms needed for the formation of other molecules. Which claim is best supported by the information about scales and feathers? A. The presence or absence of placodes determines whether an organism develops feathers or scales. B. All vertebrates evolved directly from a common ancestor that had feathers. C. Changes in placodes over time allowed for the development of different structures. D. Placodes evolved directly from mutations that result in the growth of scales. C. Changes in placodes over time allowed for the development