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LEAP 2025 Biology Practice Test Questions and Answers | 100% Pass 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 salmo...

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  • September 13, 2024
  • 33
  • 2024/2025
  • Exam (elaborations)
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  • leap 2025 biology practice test questions and answ

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©SOPHIABENNETT
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR




©SOPHIABENNETT 9/7/24 2024/2025

, ©SOPHIABENNETT EXAM SOLUTIONS Saturday, September 7, 2024 6:58 PM



LEAP 2025 Biology Practice Test
Questions and Answers | 100% Pass


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. - Answer✔️✔️-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. - Answer✔️✔️-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.

Page | 1

, ©SOPHIABENNETT EXAM SOLUTIONS Saturday, September 7, 2024 6:58 PM


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 ______. -

Answer✔️✔️-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. - Answer✔️✔️-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.


Page | 2

, ©SOPHIABENNETT EXAM SOLUTIONS Saturday, September 7, 2024 6:58 PM


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. -

Answer✔️✔️-C. Changes in placodes over time allowed for the development of different

structures.

Part A

Which statement best explains what caused some theropods to develop feathers?

A. A mutation in DNA affected the types of proteins produced by placodes.

B. A protein in the placodes caused a mutation in the gene that produces feathers.

C. A mutation in the placode gene caused placodes to produce different DNA.

D. A mutation in DNA caused the placodes that control genes to grow feathers.



Part B

Which information is evidence that best supports the answer to Part A?

A. The DNA of modern-day vertebrates codes for the proteins in placodes.

B. All vertebrate embryos have the same genetic mutations in their placode DNA.

C. Placodes in all modern-day embryos contain the same number of mutations.

D. A single placode can spontaneously develop into any type of body covering. -

Answer✔️✔️-Part A

A. A mutation in DNA affected the types of proteins produced by placodes.



Part B

A. The DNA of modern-day vertebrates codes for the proteins in placodes.

Which evidence best supports the claim that birds evolved from dinosaurs?


Page | 3

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