A.I. Explanation:

Question Focus: Identifying the name of a tool shown in the diagram

Correct Answer: crochet hook

Passage Reference: One of the wild crows cleverest tools is the crochet hook, made by detaching a side twig from a larger one, leaving enough of the larger twig to shape into a hook.

Why this is correct: The diagram labels a tool made from a twig shaped into a hook. The passage clearly names this tool as a crochet hook, so we copy the exact words from the text.

Common Mistake: Students may write hook only, but the passage gives the full name crochet hook. Writing only part of the phrase is a partial truth trap.

Paraphrasing: Passage: 'One of the wild crows cleverest tools is the crochet hook' = Diagram: 'name of the tool'

Tips: For diagram labels, look for exact names of parts or tools in the passage and copy them word for word.

Key Vocabulary:

• detaching = removing
• twig = small branch

Question Focus: Identifying a specific part of the vine-leaf tool

Correct Answer: thorn

Passage Reference: They strip out a piece of this rib, removing the leaflets and all but one thorn at the top, which remains as a ready-made hook

Why this is correct: The diagram points to the sharp point left at the top of the tool. The passage says they remove everything except one thorn, which becomes the hook.

Common Mistake: Some students write hook, but the passage explains that the hook is actually made from a thorn. Choosing hook is a context shift trap.

Paraphrasing: Passage: 'all but one thorn at the top' = Diagram: 'sharp point used as hook'

Tips: When a diagram shows a small detail, search for singular words like one, single, or only in the passage.

Key Vocabulary:

• barbed = having sharp points
• prise out = pull out with force

Question Focus: Labeling parts removed from the vine-leaf tool

Correct Answer: leaflets

Passage Reference: which consists of a central rib with paired leaflets each with a rose-like thorn at its base.

Why this is correct: The diagram shows the parts taken off the vine-leaf. The passage says the vine-leaf has paired leaflets, which are removed during tool-making.

Common Mistake: Students may write branches or parts, which are not used in the passage. This is a synonym trap because you must copy the exact word.

Paraphrasing: Passage: 'paired leaflets each with a rose-like thorn' = Diagram: 'parts removed from the leaf'

Tips: If the diagram shows more than one object, check that your answer is plural.

Key Vocabulary:

• rib = central vein of a leaf
• paired = in twos

Question Focus: Naming the main structure of the vine-leaf tool

Correct Answer: rib

Passage Reference: which consists of a central rib with paired leaflets each with a rose-like thorn at its base.

Why this is correct: The diagram points to the long central part of the leaf. The passage clearly calls this the central rib, so the correct label is rib.

Common Mistake: Writing stem is wrong because the passage never uses this word. This is a synonym trap.

Paraphrasing: Passage: 'a central rib with paired leaflets' = Diagram: 'main central part of the leaf'

Tips: Always use the passage word, even if another word seems to mean the same.

Key Vocabulary:

• central = middle
• structure = main part

Question Focus: Describing the shape feature of the padanus probe

Correct Answer: steps

Passage Reference: a tapered shape created by the crow nipping and tearing to form a progression of three or four steps along the other edge of the leaf.

Why this is correct: The diagram highlights the stepped edge of the padanus probe. The passage says this edge has three or four steps, so steps is the correct label.

Common Mistake: Students sometimes write edges or hooks, but these describe different features. This is a wrong section trap.

Paraphrasing: Passage: 'three or four steps along the other edge' = Diagram: 'stepped edge shape'

Tips: When numbers appear in the passage, they often point directly to diagram labels.

Key Vocabulary:

• tapered = gradually narrower
• probe = tool for reaching inside

General Tips:

• Diagram completion answers come directly from the passage. Never invent words.
• Follow passage order. Each diagram label usually matches information in sequence.
• Check the word limit carefully. One extra word makes the answer wrong.
• Use grammar clues from the diagram. Singular or plural shapes matter.