Structures
Any structure or behavior that improves an organism’s chances of survival in an environment is ____________.
❍ A an adjustment
❍ B an adaptation
❍ C a function
B. an adaptation
What does a crayfish do when it gets big?
❍ A It molts.
❍ B It changes habitat.
❍ C It eats more.
A. It molts
A porcupine gets away from danger using its
__________________________________________.
quills
Some animals lay a huge number of eggs _____.
❍ A so enough survive and grow into adults
❍ B because they like having big families
❍ C so the babies will have brothers and sisters to play with
❍ D because they want other animals to have plenty of food to eat
A. so enough survive and grow into adults
A gazelle gets away from danger using its
__________________________________________.
legs to outrun predators
Which two structures tell you that a crayfish is a female?
_______ egg pore _______ walking leg
_______ pincer _______ long swimmerets
Egg pore and long swimmerets
A pufferfish gets away from danger using its
__________________________________________.
mouth to swallow air or water
Chameleons can change color to hide from predators. Snails pull their soft parts into their hard shells when they sense nearby danger. They can do this because _____.
❍ A their parents taught them how to survive
❍ B they inherited these behaviors from their parents
❍ C they like to play hide and seek with predators
❍ D they think about the best way to hide from predator
B. they inherited these behaviors from their parents
Ms. Varghese will pull up the question on the screen.
Ms. Varghese will tell the answers.
In class we learned that crayfish often hide under rocks so predators won’t see them. Frogs hide under lily pads during the day. The most likely reason frogs hide under lily pads is that _____.
❍ A they don’t like sunlight
❍ B they find food to eat there
❍ C they are protected from predators
❍ D they see better in dark places
C. they are protected from predators