Plant and Animal Adaptions

Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and / or color of their skin. This ability is known as —

• natural selection

• mimicry

• imitation

• camouflage

Plant species rely on various methods of seed dispersal.Which type of seed dispersal would most likely be used by the organism shown in the diagram above?

• animal dispersal

• seed dispersal

• water dispersal

• gravity dispersal

Plants have different signals for attracting pollinators. It is not uncommon for the same plant to have more than one signal. Which of the following would NOT be a way in which plants attract pollinators?

• Presence of barbs

• specific texture or pattern

• strong scents

• bright colors

The dogs below are different breeds of the same species descended from one common ancestor.Which of the following best explains the changes in genetic traits that exist among the dog species?

• Natural selection has developed stronger, faster breeds

• Genetic disorders have changed the dogs over time

• Dog owners have selectively bred dogs for more desirable traits.

• Dogs have changed over time to please their owners.

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What purpose does the xylem in a plant serve?

• Transportation of food and nutrients

• Transportation of water and minerals

• Anchors the plant in the ground

• Transforms energy through photosynthesis

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Humans develop teeth in two different stages of their lives. The first set of teeth develop in the first two years of a person’s life. They will keep that set of teeth for a few years until they begin to become loose. This loosening process makes space for a new set of teeth that the person will use for the rest of their life. What is the function of having two different stages of teeth development in a person’s lifetime?

• It allows the person time to learn good brushing habits before they get their permanent set of teeth.

• It allows the person to grow larger teeth in the second stage that they would not be able to form as a baby.

• It provides the person a chance to have a full set of teeth in case they lost a tooth as a kid.

• It allows the person to try new foods when they are more mature and can taste more flavors in food.

Lungs in humans and many other species branch out into many tubes until they end in small sacks called alveoli. These alveoli allow oxygen to enter the blood through the capillary beds as pictured above. Alveoli provide much more surface area for the lungs to contact the capillary beds. What is the advantage of lungs with alveoli compared to lungs without alveoli?

• Alveoli allows blood to flow into the lungs without the organism coughing up blood.

• Alveoli allow the blood to thicken before receiving the oxygen

• Alveoli allows oxygen to enter the blood without the blood passing through the heart.

• Alveoli allows oxygen to enter the blood without the blood passing through the heart.

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Which of the following adaptations helps birds fly?

• They have more fat than most animals, so they can fly for long distances.

• They have hollow bones, so they are lighter.

• They have smaller blood vessels, so their hearts have to work less in flight.

• They have a larger stomach, so they can absorb food faster.

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Seeds are the offspring of mature plants. If a seed germinates and survives, it will grow to become a mature plant. Based on this information, what level of organization describes seeds?

• Tissue

• Organ

• Organ System

• Organism

True or False: The surroundings or conditions in which a plant or animal lives or operates is called environment.

• False

• True