A.I. Explanation:

Question Focus: The diagram shows a large inner area of the cell around the nucleus. We need the name of this material.

Correct Answer: C

Passage Reference: The material all around the nucleus within the cell membrane is the cytoplasm. It is a gel-like material that contains the organelles of a cell like ribosomes, centrosomes, microfilaments, and microtubules.

Why this is correct: The diagram label points to the area surrounding the nucleus. The passage clearly says the material all around the nucleus is called the cytoplasm. So the answer is cytoplasm.

Common Mistake: Some students choose cell membrane because it is also part of the cell. But the membrane is the outer layer, not the material inside. This is a context shift trap.

Paraphrasing: Passage: 'material all around the nucleus' = Diagram: 'inner substance of the cell'

Tips: If the label is inside the cell and fills most of the space, it is usually the cytoplasm, not the membrane.

Key Vocabulary:

• material = substance
• gel-like = thick and soft

Question Focus: The diagram points to a round structure at the center of the cell.

Correct Answer: A

Passage Reference: At the center of an animal cell, there is a round-shaped organelle called the nucleus. Each cell has only one nucleus and it is the control center of cells.

Why this is correct: The diagram shows a round shape in the center of the cell. The passage says there is a round-shaped organelle at the center called the nucleus. So the answer is nucleus.

Common Mistake: Students sometimes choose mitochondria because it is an organelle too. But mitochondria are not described as being at the center. This is a wrong section trap.

Paraphrasing: Passage: 'center of an animal cell' = Diagram: 'middle part of the cell'

Tips: When you see words like center or middle, scan the passage for the same location words.

Key Vocabulary:

• organelle = part of a cell
• control center = main controller

Question Focus: The diagram highlights small oval-shaped structures inside the cell.

Correct Answer: B

Passage Reference: The cell membrane houses another crucial organelle called the mitochondria. These are oval-shaped entities which generate power for the cell to function.

Why this is correct: The diagram points to small oval shapes inside the cell. The passage says mitochondria are oval-shaped and help generate power. So the answer is mitochondria.

Common Mistake: Some students pick centrosomes or microfilaments because they see a list of organelles. But those are only mentioned as examples inside the cytoplasm, not described in shape or function. This is a partial truth trap.

Paraphrasing: Passage: 'generate power for the cell' = Diagram: 'energy-producing part'

Tips: Use shape clues like oval-shaped or round-shaped to match the correct label.

Key Vocabulary:

• crucial = very important
• generate = produce

Question Focus: The diagram label describes a property of the outer layer of the animal cell.

Correct Answer: E

Passage Reference: Instead, the outer layer of animal cells is a semi-permeable layer called cell membrane, which encloses all the smaller organelles within a cell.

Why this is correct: The diagram describes the outer layer and asks for its property. The passage says the cell membrane is a semi-permeable layer. So the correct label is semi-permeable.

Common Mistake: Many students choose cell membrane because it is mentioned in the same sentence. But the diagram already shows the layer and asks for its quality, not its name. This is a paraphrase trap.

Paraphrasing: Passage: 'semi-permeable layer' = Diagram: 'allows some things to pass'

Tips: Check if the diagram wants a thing or a description. Sometimes it asks for a property, not an object.

Key Vocabulary:

• semi-permeable = lets some things pass
• outer layer = outside covering

General Tips:

• Diagram labels usually follow the same order as the passage. Read from top to bottom.
• Always match the location in the diagram with location words in the passage like center or outer layer.
• Do not choose a word just because it looks scientific. Check the exact meaning.
• Cross out options as you use them so you do not reuse the same word.