---
title: Identify the principal reason for which poison dart frogs bred in zo… — The amphibian room: poison frogs, axol… · tree and pragmatics
description: Identify the principal reason for which poison dart frogs bred in zoological collections are not toxic. Exam question 1 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 questio
---

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# Exam question 1 · The amphibian room: poison frogs, axolotls and the frog re…

<!-- .ven lang=en -->
Identify the principal reason for which poison dart frogs bred in zoological collections are not toxic.

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, dart frogs · **What happens:** identify, breed, not be · **To what, where:** principal reason, dart frogs, zoological collections

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This is exam question 1 of lesson 89 «The amphibian room: poison frogs, axolotls and the frog rescue» 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/89-amphibian-room-poison-frogs-axolotls-frog-rescue/#e1).

## The question {#question}

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:e1:1
# text = Identify the principal reason for which poison dart frogs bred in zoological collections are not toxic.
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	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	DET	WDT	PronType=Int	9	det	_	_
7	poison	poison	NOUN	NN	Number=Sing	8	compound	_	_
8	dart	dart	NOUN	NN	Number=Sing	9	compound	_	_
9	frogs	frog	NOUN	NNS	Number=Plur	16	nsubj	_	_
10	bred	breed	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	acl	_	_
11	in	in	ADP	IN	_	13	case	_	_
12	zoological	zoological	ADJ	JJ	Degree=Pos	13	amod	_	_
13	collections	collection	NOUN	NNS	Number=Plur	10	obl	_	_
14	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	16	cop	_	_
15	not	not	PART	RB	Polarity=Neg	16	advmod	_	_
16	toxic	toxic	ADJ	JJ	Degree=Pos	4	acl:relcl	_	SpaceAfter=No
17	.	.	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 reason |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme |
| 2 | **breed** | participle |  | which dart frogs *not said here* |  | zoological collections |  |  | tree rules |
| 3 | **not** **is** | present | which dart frogs |  |  |  |  | toxic *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 -->
Glass enclosures neutralise all toxins

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:e1:o1:1
# text = Glass enclosures neutralise all toxins
1	Glass	glass	NOUN	NN	Number=Sing	2	compound	_	_
2	enclosures	enclosure	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	neutralise	neutralise	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	all	all	DET	DT	PronType=Tot	5	det	_	_
5	toxins	toxin	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **neutralise** | present | Glass enclosures | all toxins |  |  |  |  | tree rules |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
They belong to an entirely different family

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:e1:o2:1
# text = They belong to an entirely different family
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	belong	belong	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	to	to	ADP	IN	_	7	case	_	_
4	an	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
5	entirely	entirely	ADV	RB	_	6	advmod	_	_
6	different	different	ADJ	JJ	Degree=Pos	7	amod	_	_
7	family	family	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **belong** | present | They |  |  |  |  | to a different family | vn attend-107.4-2 «NP V PP»: agent=Theme |

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

<!-- .ven lang=en -->
Their toxins derive from wild ants and mites absent in captivity

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:e1:o3:1
# text = Their toxins derive from wild ants and mites absent in captivity
1	Their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	toxins	toxin	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	derive	derive	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	wild	wild	ADJ	JJ	Degree=Pos	6	amod	_	_
6	ants	ant	NOUN	NNS	Number=Plur	3	obl	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	mites	mite	NOUN	NNS	Number=Plur	6	conj	_	_
9	absent	absent	ADJ	JJ	Degree=Pos	6	amod	_	_
10	in	in	ADP	IN	_	11	case	_	_
11	captivity	captivity	NOUN	NN	Number=Sing	9	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **derive** | present | Their toxins |  |  | wild ants and mites |  |  | vn create-26.4 «NP V NP PP.material»: agent=Agent from ant=Material |

### Option 4 {#o4}

<!-- .ven lang=en -->
Their toxins are surgically removed by keepers at regular intervals

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:e1:o4:1
# text = Their toxins are surgically removed by keepers at regular intervals
1	Their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	toxins	toxin	NOUN	NNS	Number=Plur	5	nsubj:pass	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	aux:pass	_	_
4	surgically	surgically	ADV	RB	_	5	advmod	_	_
5	removed	remove	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	by	by	ADP	IN	_	7	case	_	_
7	keepers	keeper	NOUN	NNS	Number=Plur	5	obl	_	_
8	at	at	ADP	IN	_	10	case	_	_
9	regular	regular	ADJ	JJ	Degree=Pos	10	amod	_	_
10	intervals	interval	NOUN	NNS	Number=Plur	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **remove** | present · passive | keepers | Their toxins |  | regular intervals |  | surgically *property* | vn fire-10.10 «NP V NP»: agent=Agent subject=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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