Body System Functions
This body system allows organisms to send signals and respond to the environment.
The nervous system
The mouth, esophagus, stomach, intestines, and liver belong to this body system.
digestive system
What is a close relationship between two species?
Symbiosis
This structure near the worm’s mouth pulls in food.
Pharynx
This body system helps the body move, maintain posture, and produce heat.
The muscular system
The nose, trachea, lungs, and bronchi are major organs of this body system.
respiratory system
T/F: In a competitive animal interaction, both animals benefit (Explain your answer)
False; both animals are harmed since they spend energy to fight for the resources
What structure in a worm is most similar to a human heart?
Aortic arch (pumps blood)
A student is growing taller and going through puberty because chemicals in the body are controlling growth and development. Which body system is mainly responsible?
The endocrine system
The body system that contains the pancreas, pituitary gland, adrenal gland, and thyroid is the ____ system
Endocrine system
Identify the interaction: A group of ants lives inside a hollow acacia tree. The ants get shelter and protection from predators, and in return, they attack other insects that try to eat the tree’s leaves.
Mutualism
What is the function of an earthworm, and how does it help the environment?
It is a decomposer, meaning it eats dead organisms and returns nutrients back to the soil
A person gets a cut on their arm. Soon, special cells help fight infection and extra fluid is returned to the bloodstream. Which body system is helping the body recover?
The lymphatic system
A doctor notices that a blood vessel is carrying blood back toward the heart after traveling through the body. What type of blood vessel is it?
Vein
A barn owl builds its nest inside an old tree hollow. The owl gains a safe place to raise its young, but the tree is not affected by the owl’s presence.
Commensalism
A worm eats soil that contains small bits of dead leaves. The food is first stored, then ground up before moving into the next stage of digestion. Which two structures are being used and what are they doing?
Crop (stores food) and gizzard (grinds food)
How do the cardiovascular system and respiratory system work together to supply the body with additional oxygen during exercise?
The respiratory system brings oxygen into the body and the cardiovascular system transports it
A doctor says a patient’s body is not regulating fluid balance effectively. Which group of organs would most likely be affected?
Kidneys, ureters, bladder, and urethra
In a forest ecosystem, a hawk hunts a mouse in the open field. Meanwhile, mistletoe grows on a tall oak tree, taking water and nutrients from the tree and stunting its growth. Nearby, bees collect nectar from wildflowers while helping the flowers reproduce.
Identify all three interactions and match them correctly.
predation (hawk and mouse), parasitism (mistletoe and oak tree), and mutualism (bees and flowers)
A worm is placed in soil that has been mixed with decaying leaves. After feeding, the food is stored and ground up, but the worm is unable to absorb any nutrients from the food even though digestion seems to happen normally in earlier stages. The worm is becoming weak over time because nutrients are not entering its body. Which structure is most directly responsible for this problem?
Intestine