Eco Wonders Vocabulary Test
Grade 4 Science • Ecosystems
Eco Wonders Vocabulary Test
11 Questions + Bonus
Name:
Date:
Score: / 12 pts
Directions: Read each scenario carefully. Fill in or circle the letter (A, B, C, or D) for the best answer.
1
A honeybee flies between blossoms, carrying pollen dust so an apple tree can produce seeds and fruit. What is this biological process called?
A Evaporation
B Pollination
C Camouflage
D Hibernation
2
A cardinal flower produces bright red petals and sweet nectar that draws hummingbirds from across the meadow. The sweet nectar __________ pollinators to visit.
A attracts
B frightens
C confuses
D pollutes
3
Monarch butterflies huddle tightly together in dense groups on fir branches to keep warm on cold nights. These tight groups are called:
A solos
B fossils
C clusters
D currents
4
Because frogs absorb water through thin skin, polluted ponds cause frog numbers to drop rapidly. Living organisms that reveal how healthy an environment is are:
A bioindicators
B predators
C herbivores
D decomposers
5
Every autumn, Canada geese fly thousands of miles south to find warmer climates and abundant food. These animals are __________ to survive the season.
A burrowing
B migrating
C molting
D sprouting
6
Beavers fell trees and construct sturdy dams that transform flowing creeks into rich wetland ponds. Species that build and reshape habitats are ecosystem:
A parasites
B passengers
C engineers
D spectators
Turn page to complete Questions 7–11 and the Bonus Challenge Page 1 of 2
Eco Wonders Vocabulary Test • Part 2
Student Name:
7
A hawk's sharp curved talons, a cactus's water-holding stem, and a turtle's protective shell are physical body parts and adaptations called biological:
A structures
B climates
C weatherings
D landforms
8
Bullfrogs, newts, and salamanders hatch in water breathing with gills, then develop lungs to live on damp land. Which vertebrate group includes these animals?
A Mammals
B Reptiles
C Amphibians
D Arachnids
9
Removing sea otters caused urchins to multiply rapidly, which destroyed kelp beds and wiped out habitat for fish. A chain reaction where one shift causes many changes is a:
A domino effect
B rock cycle
C solar eclipse
D sediment layer
10
Scientists reintroduced native gray wolves to Yellowstone National Park after decades of absence, restoring balance across rivers and forests. Restoring wild natural habitats is:
A deforestation
B rewilding
C urbanization
D commercializing
11
A rainforest contains hundreds of plant types, thousands of insect species, and many reptiles and birds living together. The wide variety of living species in an ecosystem is:
A biodiversity
B atmosphere
C condensation
D precipitation
Bonus Detective Question
+1 Point
12
How do ecosystem engineers like beavers build wooden structures that help increase local biodiversity?
A Their dams slow water flow to create new wetland habitats where many different species thrive.
B Their lodges scare away migrating birds and bioindicator amphibians from nearby lakes.
C They remove all blooming flowers so that insect pollination completely ceases in the forest.
D They trigger a destructive domino effect that permanently drains water from the ecosystem.
Check your work carefully when finished! Page 2 of 2
