ITBS Iowa Test of Basic Skills (ITBS) 5th Grade 4 — Questions and Answers
Question 1: Which part of a plant cell is responsible for photosynthesis?
- Mitochondria
- Nucleus
- Chloroplast (Correct answer)
- Cell wall
Correct answer: Chloroplast
Chloroplasts contain chlorophyll and are the site of photosynthesis in plant cells.
Question 2: Which punctuation mark is used to show possession?
- Comma
- Apostrophe (Correct answer)
- Semicolon
- Colon
Correct answer: Apostrophe
An apostrophe followed by 's' (or just an apostrophe after a plural noun) shows ownership.
Question 3: A bag has 5 red marbles, 3 blue marbles, and 2 green marbles. What is the probability of picking a blue marble?
- 1/5
- 3/10 (Correct answer)
- 1/3
- 2/5
Correct answer: 3/10
Probability = 3 blue ÷ 10 total = 3/10.
Question 4: Which author wrote 'Charlotte's Web'?
- Roald Dahl
- Beverly Cleary
- E.B. White (Correct answer)
- Laura Ingalls Wilder
Correct answer: E.B. White
Charlotte's Web was written by E.B. White and published in 1952.
Question 5: In which layer of Earth's atmosphere does weather occur?
- Stratosphere
- Mesosphere
- Thermosphere
- Troposphere (Correct answer)
Correct answer: Troposphere
The troposphere is the lowest layer of the atmosphere and is where weather events occur.
Question 6: What is the value of 6³ (six cubed)?
- 18
- 36
- 216 (Correct answer)
- 186
Correct answer: 216
6³ = 6 × 6 × 6 = 216.
Question 7: Which resource is a renewable energy source?
- Natural gas
- Coal
- Solar power (Correct answer)
- Oil
Correct answer: Solar power
Solar power is renewable because sunlight is a continuously available natural resource.
ITBS Iowa Test of Basic Skills (ITBS) 5th Grade 4
Which part of a plant cell is responsible for photosynthesis?