Which of these internal structures helps many animals take in oxygen from the air?
A. liver
B. lungs
C. intestines
D. heart
B) Lungs
The beak is an external structure a bird uses to do what?
Eat
Which external plant structure takes in water and nutrients to help a plant grow?
The roots
Which internal structure acts as the control center for an animal?
A. computer
B. heart
C. brain
D. lung
C) Brain
Which of these helps an elephant grow large?
A. its ability to run from danger
B. its ability to hear prey
C. its ability to eat a lot of food
D. its ability to feel vibrations with its feet
C) Its ability to eat a lot of food
Which external structure of a wild rose plant functions in making seeds for reproduction?
A. flower
B. stem
C. thorn
D. leaf
A) Flower
Which internal structure helps an animal digest food?
A. rib
B. skull
C. foot
D. stomach
Stomach
Name one of a wolf's external structures and describe its function.
Ears - hearing
Claws - defense, grasping, digging, etc.
Legs - running
(Many correct answers)
In which external structure of a wild rose plant does most food production take place?
A. flower
B. stem
C. thorn
D. leaf
D) Leaf
Name one of a wolf's internal structures and describe its function.
Heart - pumps blood
Brain - control center
Lungs - breathing
Stomach - digests food
Etc.
All plants and animals have internal and external structures that help them do what?
A. grow
B. breathe
C. reproduce
D. perform the functions of life
D) perform the functions of life
What is the function of plant structures such as tree bark, rose bush thorns, and cactus spines?
A. protection
B. to move water and food around the plant
C. to make food
D. make and hold seeds
A) Protection
Why are seeds an important structure in a plant? Choose the best answer.
A. the make food for the plant
B. they are responsible for new life
C. they transport water and food around the plant
D. seeds are food for animal