1.
This is an example of a
Correct Answer
B. Food web
Explanation
Food webs show the transfer of energy between organisms of an ecosystem.
2.
A producer in this food web is the
Correct Answer
D. Tree
Explanation
Producers are plants. Producers make their own food.
3.
The hawk in this food web is a
Correct Answer
A. Predator
Explanation
Predators hunt and kill other animals for food.
4.
Which of these organisms is a herbivore?
Correct Answer
D. Deer
Explanation
A herbivore eats ONLY plants.
5.
Which of these food chains is correct?
Correct Answer
C. Grass>>>grasshopper>>>bird>>>owl
Explanation
All food chains begin with a producer (plant).
6.
Which animal is a omnivore?
Correct Answer
D. Bird
Explanation
Omnivores are animals that eat BOTH plants and animals.
7.
Which animal is a carnivore?
Correct Answer
A. Fox
Explanation
Carnivores are animals that eat ONLY other animals.
8.
What is the role of decomposers?
Correct Answer
A. To return nutrients to the soil
Explanation
Decomposers eat dead plant and animals and much of the energy from these organisms are returned to the soil.
9.
Scavengers are predators.
Correct Answer
B. False
Explanation
Scavengers don't hunt live prey, but eat animals that have already been killed.
10.
Trees, bushes and flowers are all producers.
Correct Answer
A. True
Explanation
All plants are producers.
11.
.Ticks, fleas, mosquitos and leeches live off of host organsism. This means they are ___________________
Correct Answer
parasites, parasite, parasit, perasites, perasite
Explanation
These parasites attach themselves to an animal and live off the hosts' blood.
12.
Scavengers eat animals that are already __________________
Correct Answer
dead, killed, ded, kill, killd
Explanation
A vulture is an example of a scavenger.
13.
What type of symbiosis exists between this crocodile and the Egyptian Plover bird?
Correct Answer
A. Mutualism-each organism benefits
Explanation
The correct answer is mutualism because in this type of symbiosis, both organisms benefit from their relationship. In the case of the crocodile and the Egyptian Plover bird, the bird benefits by getting food from the crocodile's teeth (removing parasites) while the crocodile benefits by having its teeth cleaned.
14.
Bacteria are decomposers that live in a person's mouth and intestines.
Correct Answer
A. True
Explanation
Bacteria help to break down the dead plant (vegetables) and animal (meat) material that people eat.
15.
Rabbits are omnivores.
Correct Answer
B. False
Explanation
Rabbits only eat plants and are HERBIVORES.
16.
A. B. C. D.
Which of these is NOT a parasite?
Correct Answer
C. C. Earthworm
Explanation
Earthworms do not attach themselves to host organisms and live off of their blood.
17.
The organism that depends on the sun for its energy is the ...
Correct Answer
A. A. Grass
Explanation
Grass is the correct answer because it is a type of plant that undergoes photosynthesis to convert sunlight into energy. Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose (a type of sugar) and oxygen. This glucose is then used by the grass as a source of energy for growth and survival. Therefore, grass depends on the sun for its energy.
18.
The tree and grass are producers. All of the other organisms in this food web are ...
Correct Answer
D. Consumers
Explanation
All plants are producers and all animals are consumers.
19.
Flowers are a butterfly's prey.
Correct Answer
B. False
Explanation
Prey must be an animal that is hunted by a predator.
20.
The vulture is a ...
Correct Answer
B. Scavenger
Explanation
A scavenger is an organism that feeds on dead or decaying organic matter. Vultures are known for their scavenging behavior, as they primarily feed on carrion (dead animals). They play a crucial role in the ecosystem by cleaning up and recycling dead animals, preventing the spread of diseases and maintaining the balance of the food chain. Therefore, the correct answer is scavenger.