Biology 2 Benchmark 25/26

Which of these best describes sexual reproduction?

• A. reproduction that increases the variation within a species

• B. reproduction that involves the union of 2 sex cells

• C. reproduction that always involves 2 parents

• D. both A and B

Tags

NGSS.HS-LS3-2

The loulu tree in Hawaii reproduces by a seed encased in a fruit. Non-native species, such as pigs and rats, eat the fruit as a regular part of their diet, drastically reducing the regeneration rate of the loulu. What most likely would be the outcome for the loulu trees in the next century without intervention?

• They would become extinct.

• They would rebound and thrive.

• They would remain at their current levels.

• They would evolve a new way to reproduce.

Tags

NGSS.HS-LS4-5

The papaya mealybug is a pest that poses a threat to many tropical plants. Which fate of the mealybug would result from the inability of the species to reproduce?

• A. The species would mutate.

• B. The species would increase.

• C. The species would become extinct.

• D. The species would continue to thrive.

Tags

NGSS.HS-LS4-5

Which of these best describes asexual reproduction?

• A. reproduction that involves a single parent.

• B. reproduction that produces offspring genetically identical to the parent

• C. reproduction that reduces variation within a species

• D. all of the above

Tags

NGSS.MS-LS3-2

Technology has allowed humans to produce more food and reduce the chance of starvation. Which of the following is the most significant result of this technology?

• The technology increased population growth, creating the need for more food.

• The technology caused salts to be deposited in soils.

• The technology caused the false belief that the problem was solved forever.

• All of these

Tags

NGSS.HS-LS2-7

Which of these best describes a species?

• Members always live together in the same place on Earth.

• Members look identical to each other.

• Members are able to interbreed and produce fertile offspring.

• Members make up a community in an ecosystem.

Tags

NGSS.HS-LS4-2

What is the most precise volume of the liquid shown in the figure below?

• 47.0 mL

• 46 mL

• 47 mL

• 48 mL

Which of these best describes mutualism?

• a relationship between two species where both species benefits

• a relationship between two species where neither species benefits

• a relationship between two species where one species benefits and the other is not affected

• a relationship between two species where one species benefits and the other species is harmed

A new species of snake was introduced to a tropical region. Scientists then noticed a steady decline in the presence of field mice and an increase in the number of snakes. Which of these is the most likely explanation about why the population size of each animal changed?

• The snakes introduced to the region dominated the habitat, forcing the mice to find another place to live.

• The mice became prey to the introduced snakes, allowing the snake population to increase but decreasing the mice population.

• The snakes introduced to the region competed with the mice for food, allowing the snake population to increase but decreasing the mice population.

• The people in the area set traps that killed the mice, allowing the snakes to live without predators and therefore to increase in number.

Tags

NGSS.HS-LS4-5

NGSS.HS-LS2-6

Which abiotic factor limits the altitude at which plants can grow?

• the presence of a parasite

• the temperature of the area

• the presence of herbivorous animals

• the concentration of microbes in the soil