Question

Which of the following must be true if a sponge is an animal?

1. Sponges eat other organisms.
2. Sponges make their own food.
3. Sponges move all the time.
4. Sponges have a backbone.

a) 1 and 2
b) 2 and 3
c) 1 and 4
d) 3 and 4

Answer 1

If a sponge is an animal, the statements that must be true are option c) 1 and 4.

Step-by-step explanation:

If a sponge is an animal, then the statement that must be true is option c) 1 and 4.

1. Sponges eat other organisms: This statement is true. Sponges are filter feeders and obtain their food by filtering water to separate out the organisms and nutrients they want to eat.

4. Sponges have a backbone: This statement is true. Sponges do not have a backbone. In fact, they do not have any true organs or tissues like other animals.