---
title: What would happen if a leaf had all its stomata blocked with grease? — Plants deeper: leaves and sunlight, ho… · tree and pragmatics
description: What would happen if a leaf had all its stomata blocked with grease? Test 2 of lesson 251 «Plants deeper: leaves and sunlight, how a tree is made of air» 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 wron
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/t2/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/questions/biology/) / [Plants deeper: leaves and sunlight, ho…](https://md.mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/) / t2

# Test 2 · Plants deeper: leaves and sunlight, how a tree is made of…

<!-- .ven lang=en -->
What would happen if a leaf had all its stomata blocked with grease?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 3 · wrong ✗ · **Who acts:** leaf · **What happens:** happen, have, block · **To what, where:** stomata

<!-- .vabout -->
This is test 2 of lesson 251 «Plants deeper: leaves and sunlight, how a tree is made of air» of the biology course of Mova's primary school. 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/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/#t2).

## The question {#question}

```conllu
# sent_id = question:biology:251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air:t2:1
# text = What would happen if a leaf had all its stomata blocked with grease?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
4	if	if	SCONJ	IN	_	7	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	leaf	leaf	NOUN	NN	Number=Sing	7	nsubj	_	_
7	had	have	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	3	advcl	_	_
8	all	all	DET	PDT	PronType=Tot	10	det:predet	_	_
9	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
10	stomata	stomata	NOUN	NNS	Number=Plur	7	obj	_	_
11	blocked	block	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
12	with	with	ADP	IN	_	13	case	_	_
13	grease	grease	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
14	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | would |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **have** *a condition, not said to happen* | past | a leaf | leaf's stomata |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent stomata=Patient |
| 3 | **block** | participle |  | leaf's stomata *not said here* |  |  |  | with grease | vn fill-9.8-1 «NP V NP PP.theme»: agent=Agent with grease=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 {#o1}

<!-- .ven lang=en -->
It would make food faster than before

```conllu
# sent_id = question:biology:251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air:t2:o1:1
# text = It would make food faster than before
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	make	make	VERB	VB	VerbForm=Inf	0	root	_	_
4	food	food	NOUN	NN	Number=Sing	3	obj	_	_
5	faster	fast	ADV	RBR	Degree=Cmp	3	advmod	_	_
6	than	than	ADP	IN	_	7	case	_	_
7	before	before	ADV	RB	_	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | would | It | food |  |  |  | fast *property* | vn build-26.1-1 «NP.material V NP»: agent=Material food=Product |

### Option 2 {#o2}

<!-- .ven lang=en -->
Nothing at all, because leaves do not need any air to make their food

<!-- fold The tree, 14 words -->
```conllu
# sent_id = question:biology:251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air:t2:o2:1
# text = Nothing at all, because leaves do not need any air to make their food
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	0	root	_	_
2	at	at	ADP	IN	_	3	case	_	_
3	all	all	DET	DT	PronType=Tot	1	nmod	_	SpaceAfter=No
4	,	,	PUNCT	,	_	9	punct	_	_
5	because	because	SCONJ	IN	_	9	mark	_	_
6	leaves	leaf	NOUN	NNS	Number=Plur	9	nsubj	_	_
7	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	aux	_	_
8	not	not	PART	RB	Polarity=Neg	9	advmod	_	_
9	need	need	VERB	VB	VerbForm=Inf	1	parataxis	_	_
10	any	any	DET	DT	PronType=Ind	11	det	_	_
11	air	air	NOUN	NN	Number=Sing	9	obj	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	make	make	VERB	VB	VerbForm=Inf	9	advcl	_	_
14	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	15	nmod:poss	_	_
15	food	food	NOUN	NN	Number=Sing	13	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **need** | present · do-support | leaves | any air |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot air=Theme |
| 2 | **make** | to-infinitive | leaves *not said here* | leaves's food |  |  |  |  | vn build-26.1-1 «NP.asset V NP»: agent=Asset food=Product |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
It could not take in carbon dioxide, so it could not make food

```conllu
# sent_id = question:biology:251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air:t2:o3:1
# text = It could not take in carbon dioxide, so it could not make food
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	could	could	AUX	MD	VerbForm=Fin	4	aux	_	_
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	take	take	VERB	VB	VerbForm=Inf	0	root	_	_
5	in	in	ADP	RP	_	4	compound:prt	_	_
6	carbon	carbon	NOUN	NN	Number=Sing	7	compound	_	_
7	dioxide	dioxide	NOUN	NN	Number=Sing	4	obj	_	SpaceAfter=No
8	,	,	PUNCT	,	_	13	punct	_	_
9	so	so	ADV	RB	_	13	advmod	_	_
10	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	13	nsubj	_	_
11	could	could	AUX	MD	VerbForm=Fin	13	aux	_	_
12	not	not	PART	RB	Polarity=Neg	13	advmod	_	_
13	make	make	VERB	VB	VerbForm=Inf	4	conj	_	_
14	food	food	NOUN	NN	Number=Sing	13	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **take in** | could | It | carbon dioxide |  |  |  |  | vn bring-11.3 «NP V NP»: agent=Agent dioxide=Theme |
| 2 | **not** **make** | could | dioxide | food |  |  |  |  | vn build-26.1-1 «NP.material V NP»: agent=Material food=Product |

### Option 4 · ← Mova's choice {#o4}

<!-- .ven lang=en -->
It would turn bright red at once

```conllu
# sent_id = question:biology:251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air:t2:o4:1
# text = It would turn bright red at once
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	turn	turn	VERB	VB	VerbForm=Inf	0	root	_	_
4	bright	bright	ADJ	JJ	Degree=Pos	5	amod	_	_
5	red	red	ADJ	JJ	Degree=Pos	3	xcomp	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	once	once	ADV	RB	NumForm=Word|NumType=Mult	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn** | would | It |  |  |  |  | red *property* | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme at once=Trajectory |

<!-- div src -->

**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 -->

<!-- pn -->
- ← previous: [Plants deeper: leaves and sunlight, ho…, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/t1/)
- next →: [Plants deeper: leaves and sunlight, ho…, test 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/t3/)
- ↑ back to [Plants deeper: leaves and sunlight, how a tree is made of air](https://md.mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/)