1. Hummingbirds build their nests in trees. Here they are protected from predators but can still go out to find food and water. This describes the hummingbirds’
A. habitat
B. biome
C. humus
D. niche
4. The state of inactivity in plants, when growth and metabolism slows down, is called
A. hibernation
B. dormancy
C. succession
D. latency
2. Circadian rhythms happen
A. every day
B. every week
C. every season
D. every year
5. (True or False) Plants that come back year after year are called perennials.
A. True
B. False
3. The dormant state that some animals enter into during periods of cooler weather is known as _________.
A. gestation
B. retraction
C. hibernation
D. germination
6. Organisms that are active during the night are
A. diurnal
B. rhythmic
C. dormant
D. nocturnal
