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Life Science (Grade 7) Midterm — Semester 1, Form A

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Science Grade 7 15 multiple choice + 1 written

Free printable Life Science midterm (Grade 7): 15 multiple-choice questions plus 1 written response covering Cells, Genetics & Heredity, Evolution & Adaptation. Answer key included — customize it in the Midterm Maker.

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Life Science (Grade 7) Midterm — Semester 1, Form A
Name: Date: Period:

Directions: Read each question carefully and choose the best answer. Answer the written response in complete sentences.

Covers: Cells · Genetics & Heredity · Evolution & Adaptation

Part 1: Multiple Choice

  1. Which structure controls what enters and leaves the cell?
    1. A. Cell membrane
    2. B. Cell wall
    3. C. Nucleus
    4. D. Chloroplast
  2. In which organelle does photosynthesis take place?
    1. A. Mitochondrion
    2. B. Chloroplast
    3. C. Lysosome
    4. D. Ribosome
  3. Which structure is found in plant cells but not in animal cells?
    1. A. Ribosome
    2. B. Cell wall
    3. C. Cell membrane
    4. D. Mitochondrion
  4. Which list shows levels of organization from smallest to largest?
    1. A. Cell, organ, tissue, organ system
    2. B. Organ, tissue, cell, organ system
    3. C. Tissue, cell, organ, organ system
    4. D. Cell, tissue, organ, organ system
  5. Which statement is part of the cell theory?
    1. A. Cells can form from nonliving matter
    2. B. All cells contain chloroplasts
    3. C. All living things are made of one or more cells
    4. D. All organisms are made of many cells
  6. Sex cells such as eggs and sperm are produced by which process?
    1. A. Fertilization
    2. B. Mitosis
    3. C. Binary fission
    4. D. Meiosis
  7. An organism with the genotype Tt is described as what?
    1. A. Purebred
    2. B. Heterozygous
    3. C. Homozygous recessive
    4. D. Homozygous dominant
  8. Which tool is used to predict the possible genotypes of offspring?
    1. A. Pedigree of fossils
    2. B. Dichotomous key
    3. C. Food web
    4. D. Punnett square
  9. Two Tt pea plants are crossed. What percent of offspring are expected to be tt?
    1. A. 50%
    2. B. 25%
    3. C. 0%
    4. D. 75%
  10. Tall (T) is dominant over short (t). What percent of offspring from Tt × tt are expected to be tall?
    1. A. 25%
    2. B. 75%
    3. C. 50%
    4. D. 100%
  11. What do fossils provide evidence of?
    1. A. How organisms choose their traits
    2. B. Weather patterns from last year
    3. C. The exact age of every living species
    4. D. Organisms that lived long ago and how life changed
  12. A reduced structure that no longer performs its original function, such as tiny hip bones in whales, is called what?
    1. A. A camouflage trait
    2. B. A vestigial structure
    3. C. A homologous structure
    4. D. A mutation
  13. Which is an example of camouflage?
    1. A. A skunk spraying a predator
    2. B. A bear hibernating through the winter
    3. C. Geese flying south for the winter
    4. D. An arctic fox's white winter fur blending with snow
  14. What is a mutation?
    1. A. A new species forming overnight
    2. B. A trait learned during life
    3. C. A change in an organism's DNA
    4. D. A type of cell division
  15. Which scientist proposed the theory of evolution by natural selection in his 1859 book On the Origin of Species?
    1. A. Louis Pasteur
    2. B. Charles Darwin
    3. C. Gregor Mendel
    4. D. Isaac Newton

Part 2: Written Response

  1. Compare a plant cell and an animal cell. Name at least two structures they share and two that are found only in plant cells, and explain the job of each.

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