Which one of the pictures below shows a non-living thing?

Here are the solutions to the questions from the image:

1. Which one of the pictures below shows a non-living thing?

• A. Cow (living)
• B. Log of wood (non-living)
• C. Tree (living)
• D. Rabbit (living)
• The log of wood is a non-living thing.
• The best answer is B.

2. Which one of the above animals is an invertebrate?

• The animals displayed are: A. Rabbit, B. Frog, C. Mosquito, D. Bird.
• A. Rabbit (vertebrate)
• B. Frog (vertebrate)
• C. Mosquito (invertebrate, as it lacks a backbone)
• D. Bird (vertebrate)
• The best answer is C.

3. A Grade 4 teacher displayed pictures of the following animals. (This is a descriptive statement for the animals used in question 2).

4. What is the main difference between vertebrates and invertebrates?

• A. Vertebrates have a backbone while invertebrates do not have.
• B. Vertebrates are small while invertebrates are big. (Incorrect)
• C. Invertebrates only fly while vertebrates walk. (Incorrect)
• D. Vertebrates do not have a backbone while invertebrates have a backbone. (Incorrect, this is the opposite)
• The defining characteristic of vertebrates is the presence of a backbone, while invertebrates lack one.
• The best answer is A.