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Ninth Grade (Grade 9) Biology Questions

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Grade 9 Development and Reproduction
A zygote is formed when                                    .
  1. the process of meiosis is completed
  2. crossing over occurs during meiosis
  3. the egg is formed during meiosis
  4. the sperm fertilizes the egg
Grade 9 Food Chains and Webs
Which organisms can be found at the first, or lowest, trophic level?
  1. herbivores
  2. carnivores
  3. heterotrophs
  4. autotrophs
Grade 9 Cell Structure and Function
Which cell structure has a cell's genetic material?
  1. organelle
  2. nucleus
  3. cell envelope
  4. cytoplasm
Grade 9 Food Chains and Webs
Herbivores eat only meat.
  1. True
  2. False
Grade 9 Cell Structure and Function
Which organelle is not found in animal cells?
  1. mitochondrion
  2. ribosome
  3. chloroplast
  4. smooth endoplasmic reticulum
Grade 9 Microbiology
Spherical-shaped bacteria are called                .
  1. bacilli
  2. cocci
  3. spirilla
  4. spirochetes
Grade 9 Cell Structure and Function
The primary job of the cell wall is to
  1. protect the cell and keep its shape.
  2. store DNA.
  3. direct and monitor a cell's activities.
  4. help the cell move.
Grade 9 Cell Structure and Function
Which structure is made up of fats and proteins and surrounds a cell?
  1. plasma membrane
  2. cell wall
  3. cell envelope
  4. cytoplasm
Grade 9 Symbiosis
A tapeworm feeds off the nutrients in your digestive tract, enriching itself at your expense. Why is this relationship is an example of parasitism?
  1. One organism benefits while another is harmed.
  2. One organism benefits while another is unaffected.
  3. Both organisms benefit.
  4. None of the organisms benefit or harmed.
Grade 9 Biomes
The two biomes with the least amount of precipitation are                                .
  1. tundra and taiga.
  2. taiga and desert.
  3. desert and tundra.
  4. tundra and temperate grassland.
Grade 9 Biotic and Abiotic
How are biotic and abiotic factors related?
  1. They are not related and do not interact.
  2. Abiotic factors are stronger than biotic factors.
  3. Biotic factors are stronger than Abiotic factors.
  4. Abiotic and biotic factors affect and influence each other constantly.
Grade 9 Taxonomy
The organisms Panthera leo and Panthera tigris are the same
  1. cat.
  2. genus.
  3. organism.
  4. species.
Grade 9 Communities, Populations, and Ecosystems
What term describes organisms of the same species inhabiting a particular region?
  1. biosphere
  2. ecosystem
  3. population
  4. environment
Grade 9 Cell Structure and Function
Most cell membranes consist mainly of                            .
  1. DNA and ATP
  2. chitin and starch
  3. proteins and lipids
  4. nucleotides and amino acids
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