Semester 1 Quarter 2 Benchmark – 7th Grade Science (T81)

1. Which of these factors is a biotic factor in a forest ecosystem?a. Temperature of the soilb. Type of trees that grow therec. Amount of precipitation each yeard. Amount of sunlight that reaches the ground

2. A researcher is developing a dichotomous key. What is the meaning of the word dichotomous?

a. Moves in a cycleb. Produces flowersc. Divided into two partsd. Made up of many pieces

3. Which process releases carbon dioxide into the atmosphere?a. Respirationb. Photosynthesisc. Transpirationd. Precipitation

4. What biome is most like the desert in terms of precipitation?a. Tundrab. Tropical Rain Forestc. Temperate Deciduous Forestd. Temperate Grassland

5. Materials move from one part of the cell to another through the organelle labeled

a. Organelle Ab. Organelle Bc. Organelle Cd. Organelle D

6. Which of these organisms are decomposers?

a. Grassesb. Fungic. Herbivoresd. Carnivores

7. Which quotation is an example of a scientist drawing a conclusion?a. “I think ribosomes are involved in making proteins.”b. “Ribosomes are formed from proteins and genetic material.”c. “Do cells that make many proteins have more ribosomes than other

cells?”d. “Observations support my hypothesis that cells that produce large

amounts of proteins have many ribosomes.”8. How does active transport differ from passive transport?

a. Active transport involves an expense of energy.

b. Active transport involves the movement of large particles.c. Active transport involves animal cells as opposed to plant cells.d. Active transport involves the movement of materials into or out of a

cell.9. Margie’s science class is studying the composition of sea water. Margie

accidentally drops a graduated cylinder and it breaks on the floor. Margie should

a. Immediately tell her teacherb. Stay away from the spill until the end of classc. Quickly pick up the broken glass, then tell her teacherd. Clean up the glass along with any water, and throw it all in the trash

can10.A researcher discovers that a heterotrophic, unicellular organism has cell

walls made of chitin. What type of organism is the researcher studying?a. Plantb. Protistc. Fungusd. Bacteria

11.Spanish moss grows on the branches of oak trees. The moss benefits from being up high and the tree is neither helped nor harmed. What type of relationship exists between these organisms?

a. Mutualismb. Parasitismc. Competitiond. Commensalism

12.Many related classes of organisms are grouped into the same a. Genusb. Phylumc. Speciesd. Family

13.Which animal is MOST LIKELY to be found in a tropical rain forest?a. Polar bearb. Buffaloc. Parrotd. Lynx

14.The cell to the right has been placed in a solution containing dissolved particles. The cell membrane is permeable to water, but not to the dissolved particles. What will immediately happen to the cell?

a. The cell will burstb. Water will leave the cellc. Water will enter the cell

d. The cell will surround the particles15.Kidneys are composed of several tissues that work together to filter wastes

from the body. At what level of organization within the body are the kidneys?

a. Cellsb. Tissuesc. Organsd. Systems

16.Olivia is completing a chart to describe a fox. What terms are missing from the chart?

Kingdom AnimaliaType of cell ?Cell Structures No cell wallsNumber of Cells MulticellularNutrition ?

a. Eukaryotic; heterotrophyb. Eukaryotic; autotrophc. Prokaryotic; heterotrophyd. Prokaryotic; autotroph

17.This diagram shows how matter flows through an ecosystem. What is one way that plants benefit from animals?

a. Plants use oxygen released by animals

b. Plants need animals to break down sugars

c. Plants depend on animals as a food sourced. Plants use carbon dioxide released by animals

18.What is one of the products of photosynthesis?a. Sunlightb. Oxygenc. Chlorophylld. Carbon Dioxide

19.A jellyfish is a multicellular organism that lives in the ocean. It obtains nourishment mostly by eating small fish. Its cells do not have a cell wall and it moves by pushing water outward. What type of organism is a jellyfish?

a. Plantb. Animalc. Fungid. Protist

20. The diagrams show two cells. Cell A must b e a type of a. Plantb. Protistc. Fungusd. Bacteria

21.The role of the excretory system in the human body is to a. Produce foodb. Obtain oxygenc. Remove wastesd. Release energy

22.Jared is studying biomes. Which is the northernmost biome?a. Tundrab. Savannac. Tropical rain forestd. Temperate deciduous forest

23.Which type of plant leaves are an adaptation for life in a warm forest?a. Thin needles that conserve waterb. Broad flat leaves that collect sunlightc. Needles that limit the movement of oxygend. Narrow blades that prevent the flow of carbon dioxide

24.Where do rivers begin?a. In estuariesb. In ocean inletsc. In marshesd. In mountain streams

25. The diagram shows an energy pyramid for a marine ecosystem. According to the diagram, the greatest loss of energy takes place between

a. Phytoplankton and small crustaceans

b. Small crustaceans and herringc. Phytoplankton and herringd. Herring and mackerel

26.Which scientific information could NOT have been identified without the development of the microscope?

a. The location and properties of biomesb. The existence of cells and their contentsc. The types of traits that are controlled by allelesd. The separation of the marine ecosystems into zones

27.Scientists attempt to develop an accurate fossil record. Which statement is BEST supported by the fossil record?

a. New species develop every day.

b. Most species that have ever existed have become extinct.c. Most species persist for millions of years without change.d. Species have only started to become extinct in recent times.

28.Which bar graph best represents the lengths of summer and winter in the taiga biome?

29.An organism has sharp canine teeth. How might this be an adaptation that helps the organism survive?

a. It makes the organism a successful carnivoreb. It helps the organism to stay warm in low temperatures.c. It enables the organism to live in waterd. It protects the organism as it hibernates

30.Millions of years ago, a dinosaur stepped in soft clay. As sunlight bake and hardened the clay, the footprint was preserved as a

a. Rock

b. Fossilc. Speciesd. Fossil fuel