---
title: Identify the principal function of the alveoli of the lungs. — The human body deeper: lungs, stomach… · tree and pragmatics
description: Identify the principal function of the alveoli of the lungs. Exam question 1 of lesson 262 «The human body deeper: lungs, stomach and guts» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Exam question 1 · The human body deeper: lungs, stomach and guts

<!-- .ven lang=en -->
Identify the principal function of the alveoli of the lungs.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** you · **What happens:** identify · **To what, where:** principal function

<!-- .vabout -->
This is exam question 1 of lesson 262 «The human body deeper: lungs, stomach and guts» of the biology course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/262-human-body-deeper-lungs-stomach-and-guts/#e1).

## The question {#question}

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:e1:1
# text = Identify the principal function of the alveoli of the lungs.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	function	function	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	alveoli	alveolus	NOUN	NNS	Number=Plur	4	nmod	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	lungs	lung	NOUN	NNS	Number=Plur	7	nmod	_	SpaceAfter=No
11	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal function of the alveoli of the lungs |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent function=Theme |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The exchange of oxygen and carbon dioxide between the air and the blood

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:e1:o1:1
# text = The exchange of oxygen and carbon dioxide between the air and the blood
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	exchange	exchange	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	oxygen	oxygen	NOUN	NN	Number=Sing	2	nmod	_	_
5	and	and	CCONJ	CC	_	7	cc	_	_
6	carbon	carbon	NOUN	NN	Number=Sing	7	compound	_	_
7	dioxide	dioxide	NOUN	NN	Number=Sing	2	conj	_	_
8	between	between	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	air	air	NOUN	NN	Number=Sing	7	nmod	_	_
11	and	and	CCONJ	CC	_	13	cc	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	blood	blood	NOUN	NN	Number=Sing	2	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **exchange** |  |  | oxygen |  |  |  |  | nom exchange «phenomenon transitive»: of=patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
The digestion of food prior to its absorption into the blood through the walls of the lungs

<!-- fold The tree, 17 words -->
```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:e1:o2:1
# text = The digestion of food prior to its absorption into the blood through the walls of the lungs
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	digestion	digestion	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	food	food	NOUN	NN	Number=Sing	2	nmod	_	_
5	prior	prior	ADJ	JJ	Degree=Pos|ExtPos=ADP	8	case	_	_
6	to	to	ADP	IN	_	5	fixed	_	_
7	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
8	absorption	absorption	NOUN	NN	Number=Sing	2	nmod	_	_
9	into	into	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	blood	blood	NOUN	NN	Number=Sing	2	nmod	_	_
12	through	through	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	walls	wall	NOUN	NNS	Number=Plur	2	nmod	_	_
15	of	of	ADP	IN	_	17	case	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	lungs	lung	NOUN	NNS	Number=Plur	14	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **digest** |  |  | food |  | the blood |  | prior food's absorption | nom digestion «process transitive»: of=patient prior=obl into=place |
| 2 | **absorb** |  | food |  |  |  |  |  | nom absorption «process transitive»: poss=agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
The storage of water for the body

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:e1:o3:1
# text = The storage of water for the body
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	storage	storage	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	water	water	NOUN	NN	Number=Sing	2	nmod	_	_
5	for	for	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	body	body	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **store** |  |  | water |  |  |  | for the body | nom storage «act transitive»: of=patient for=obl |

### Option 4 {#o4}

<!-- .ven lang=en -->
The production of sound in speech

```conllu
# sent_id = question:biology:262-human-body-deeper-lungs-stomach-and-guts:e1:o4:1
# text = The production of sound in speech
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	production	production	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	sound	sound	NOUN	NN	Number=Sing	2	nmod	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	speech	speech	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **produce** |  |  | sound |  | speech |  |  | nom production «act transitive»: of=patient in=place |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

<!-- /div -->

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