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WorksheetsBiology Review
Total questions: 15
Worksheet time: 15mins
Biosphere
Organelle
Ecosystem
Community
Which statement is an example of how carbon moves through a food chain as part of the carbon cycle?
Producers release carbon dioxide, and consumers take it in.
Producers take in carbon dioxide, and consumers release it.
Producers take in carbon from the soil, and they release it when they decompose.
Producers release carbon into the soil, and consumers take it in from the soil.
The giant octopus lays 20,000 to 100,000 fertilized eggs. After hatching, most octopuses become prey to larger marine organisms, and less than 5% will reach adulthood to reproduce. One benefit of the giant octopus laying many eggs is to —
increase the average body size for surviving individuals to avoid predation
decrease competition between different octopus species to maintain resources in the population
increase the chance that more individuals will survive to maintain the population
decrease the likelihood of offspring being consumed by predators
Students construct a graphic organizer to illustrate the different levels of biological organization.
Which terms does the X represent?
cell
organism
ecosystem
biosphere
The San Marcos salamander, Eurycea nana, is a light reddish-brown translucent salamander about 2–5 cm in length. E. nana is found only in Spring Lake and a portion of the San Marcos River.
Which human activity would most likely decrease the ability of the salamanders to survive?
Increasing water consumption that decreases the flow of clean water from the springs that
feed the river
Public transportation that reduces the number of automobiles that contribute to pollution
runoff into the river
Tourism that helps fund the educational programs related to river ecosystem conservation
The addition of a new food source into the river that limits competition for resources
In a Central Texas grassland, the producers incorporate 12,000 kJ of energy from the sun into their tissues. About how much energy would be incorporated into the tissues of herbivores?
12,000 kJ
1,200 kJ
10,800 kJ
1,080 kJ
After a wheat field is cleared, wild grasses and weeds begin growing. This process is considered —
primary succession because pioneer species appear
primary succession because there are no large trees
secondary succession because soil is already present
secondary succession because the field contains inorganic matter
What are homologous structures?
different ATP synthesis mechanisms
DNA similarities
different bone structures
similar bone structures in different species (evidence of common ancestor)
Which of the following best describes evolution?
spermocytes disfigure and destroy their spermotaphores
individual animals change over time
individual animals try really hard to grow wings and adapt
populations change over time, not individuals
Which of the following can be concluded from the fossil record of horse relatives?
horses cannot reproduce successfully with other mammals
horses evolved to dominate the aquatic ecosystem
evolution is a slow and gradual process that takes a long time
evolution occurs extremely rapidly in all species
Which of the following best describes the role of chlorophyll in photosynthesis?
A) Chlorophyll absorbs light energy and converts it into chemical energy.
B) Chlorophyll stores energy in the form of glucose.
C) Chlorophyll releases oxygen as a byproduct of photosynthesis.
D) Chlorophyll transports water and nutrients within the plant.
In a controlled experiment to test the effect of light intensity on plant growth, which of the following is the independent variable?
A) The amount of water given to the plants
B) The type of soil used
C) The light intensity
D) The height of the plants
Which of the following processes is an example of a negative feedback mechanism in the human body?
A) The release of insulin to decrease blood sugar levels
B) The release of adrenaline during a fight-or-flight response
C) The increase in heart rate during exercise
D) The dilation of pupils in low light conditions
