In the food web below, which of the following is both a predator, and prey?
A. the grass
Incorrect. The grass is a producer and is not a predator or prey.
B. the frog
Correct! The frog is a predator when it eats the insects but prey to the owl and snake.
C. the owl
Incorrect. In this food web the owl is a predator but nothing is eating the owl so it is not a prey.
D. the fox
Incorrect. In this food web the fox is a predator but nothing is eating the fox so it is not a prey.
In the food web below, which series of labels correctly identifies the fox?
A. consumer, predator, and prey
Incorrect. In this food web the fox is a consumer and a predator but nothing is eating the fox so it is not a prey.
B. producer, predator, and host
Incorrect. In this food web the fox is a predator and a host but it is not a producer.
C. consumer, predator, and host
Correct!
D. consumer, prey, and host
Incorrect. In this food web the fox is a consumer and a host but it is not a prey.
In the food web below, which organism is a parasite?
A. mouse
Incorrect. The mouse is not a parasite.
B. fox
Incorrect. The fox is a host not a parasite.
C. owl
Incorrect. The owl is not a parasite.
D. tick
Correct! The tick is a parasite.
| Mycobacterium leprae is a bacteria that lives in part of the nerve cells of humans. The bacteria receives nourishment from the cells. This bacteria causes the host’s immune system to attack the nerve cells which eventually destroys the cell. |
According to the reading above Mycobacterium leprae would be considered —
A. a parasite
Correct!
B. a host
Incorrect. Mycobacterium leprae is not a host. It receives nourishment from the cells.
C. a producer
Incorrect. Mycobacterium leprae is not a producer. It does not make its own food.
D. prey
Incorrect. Mycobacterium leprae is not a prey.