Life Science Review 2020

Succulent plants store water. Given this characteristic, which biome would they best be suited to live in?

• freshwater

• desert

• salt water

• tundra

Which relationship below is an example of a predator-prey relationship?

• A rabbit eats grasses.

• A pet fish eats fish food.

• A giraffe eats the leaves from tall trees.

• A coyote eats a hen.

This relationship between sheep and rabbits is an example of _____________.

• competition.

• predation

• parasitism

• commensalism

Which of the following environments is most likely to have cold, windy weather and a relatively low amount of available oxygen?

• desert

• coniferous forest

• mountain

• grassland

Which of the following is a substance that is found between the cell membrane and the nucleus, which primarily consists of water and holds organelles?

• cytoplasm

• mitochondria

• chloroplast

• cell membrane

In a living organism, what is an organ?

• a group of similar cells that perform a common function.

• the shell or skin of an organism.

• functional unit, or building block of all organisms, smallest unit that can carry on the activities of life

• a structure composed of a number of tissues that work together to perform a specific task.

The following diagram represents how energy flows through ecosystems:

sunlight>plants>herbivores>carnivores

What would most likely occur in an ecosystem if a nearby volcano erupted and filled the sky with dust particles, which caused significantly less sunlight to reach the ecosystem over the course of a year?

• Many plants would die, but the animals would survive.

• The plants would begin using nutrients in the soil for energy

• Many plants and animals would die off.

• The lack of sunlight would not significantly impact the ecosystem.

The _______________ biome is the largest on Earth.

• marine

• polar

• terrestrial

• freshwater

The ___________ is a membrane-bound organelle that contains an organism's genetic material and helps control and regulate cellular processes.

• endoplasmic reticulum

• cell membrane

• ribosome

• nucleus

As a bee feeds upon the nectar produced by a flower, the bee may become coated with the flower's pollen. As the bee flies from flower to flower, some of this pollen may contact a flower's pistil, resulting in pollination.

This relationship between the bee and the flower is an example of ____________________.

• competition

• mutualism

• commensalism

• parasitism