---
title: Why would a fungus that attacks skin be so deadly to frogs? — The amphibian room: poison frogs, axol… · tree and pragmatics
description: Why would a fungus that attacks skin be so deadly to frogs? Test 8 of lesson 89 «The amphibian room: poison frogs, axolotls and the frog rescue» 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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# Test 8 · The amphibian room: poison frogs, axolotls and the frog re…

<!-- .ven lang=en -->
Why would a fungus that attacks skin be so deadly to frogs?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** fungus · **What happens:** attack, be · **To what, where:** skin

<!-- .vabout -->
This is test 8 of lesson 89 «The amphibian room: poison frogs, axolotls and the frog rescue» 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/89-amphibian-room-poison-frogs-axolotls-frog-rescue/#t8).

## The question {#question}

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t8:1
# text = Why would a fungus that attacks skin be so deadly to frogs?
1	Why	why	ADV	WRB	PronType=Int	10	advmod	_	_
2	would	would	AUX	MD	VerbForm=Fin	10	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	fungus	fungus	NOUN	NN	Number=Sing	10	nsubj	_	_
5	that	that	PRON	WDT	PronType=Rel	6	nsubj	_	_
6	attacks	attack	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
7	skin	skin	NOUN	NN	Number=Sing	6	obj	_	_
8	be	be	AUX	VB	VerbForm=Inf	10	cop	_	_
9	so	so	ADV	RB	_	10	advmod	_	_
10	deadly	deadly	ADJ	JJ	Degree=Pos	0	root	_	_
11	to	to	ADP	IN	_	12	case	_	_
12	frogs	frog	NOUN	NNS	Number=Plur	10	obl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	10	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **attack** | present | a fungus | skin |  |  |  |  | vn attack-60.1-1 «NP V NP»: agent=Agent skin=Patient |
| 2 | **is** | would | a fungus |  |  |  |  | to frogs; deadly *property* | tree rules |

<!-- .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 -->
Frogs eat the fungus by mistake and choke on it

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t8:o1:1
# text = Frogs eat the fungus by mistake and choke on it
1	Frogs	frog	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	eat	eat	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	fungus	fungus	NOUN	NN	Number=Sing	2	obj	_	_
5	by	by	ADP	IN	_	6	case	_	_
6	mistake	mistake	NOUN	NN	Number=Sing	2	obl	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	choke	choke	NOUN	NN	Number=Sing	6	conj	_	_
9	on	on	ADP	IN	_	10	case	_	_
10	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **eat** | present | Frogs | the fungus |  | choke |  | by mistake and choke | vn eat-39.1-1 «NP V NP»: agent=Agent fungus=Patient |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Frogs need their skin to breathe and take in water

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t8:o2:1
# text = Frogs need their skin to breathe and take in water
1	Frogs	frog	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	skin	skin	NOUN	NN	Number=Sing	2	obj	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	breathe	breathe	VERB	VB	VerbForm=Inf	2	advcl	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	take	take	VERB	VB	VerbForm=Inf	6	conj	_	_
9	in	in	ADP	RP	_	8	compound:prt	_	_
10	water	water	NOUN	NN	Number=Sing	8	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | Frogs | Frogs's skin |  |  |  |  | vn want-32.1-1-1 «NP V NP ADV»: agent=Pivot skin=Theme |
| 2 | **breathe** | to-infinitive | Frogs *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |
| 3 | **take in** | infinitive | Frogs *not said here* | water |  |  |  |  | vn bring-11.3 «NP V NP»: agent=Agent water=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Frog skin is their only food

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t8:o3:1
# text = Frog skin is their only food
1	Frog	frog	NOUN	NN	Number=Sing	2	compound	_	_
2	skin	skin	NOUN	NN	Number=Sing	6	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
5	only	only	ADJ	JJ	Degree=Pos	6	amod	_	_
6	food	food	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Frog skin | their only food |  |  |  |  | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
The fungus makes them too slow to jump

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t8:o4:1
# text = The fungus makes them too slow to jump
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	fungus	fungus	NOUN	NN	Number=Sing	3	nsubj	_	_
3	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	3	obj	_	_
5	too	too	ADV	RB	_	6	advmod	_	_
6	slow	slow	ADJ	JJ	Degree=Pos	3	xcomp	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	jump	jump	VERB	VB	VerbForm=Inf	6	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | the fungus | them *= they* |  |  |  | slow *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset they=Product |
| 2 | **jump** | to-infinitive | them *= they* *not said here* |  |  |  |  |  | vn run-51.3.2-2-1 «NP V»: agent=Theme |

<!-- 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 -->

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