---
title: Why might a see-through frog be hard for a bird to spot on a leaf? — The amphibian room: poison frogs, axol… · tree and pragmatics
description: Why might a see-through frog be hard for a bird to spot on a leaf? Test 11 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 11 · The amphibian room: poison frogs, axolotls and the frog re…

<!-- .ven lang=en -->
Why might a see-through frog be hard for a bird to spot on a leaf?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** see through frog, bird · **What happens:** see, be, spot · **To what, where:** leaf

<!-- .vabout -->
This is test 11 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/#t11).

## The question {#question}

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t11:1
# text = Why might a see-through frog be hard for a bird to spot on a leaf?
1	Why	why	ADV	WRB	PronType=Int	9	advmod	_	_
2	might	might	AUX	MD	VerbForm=Fin	9	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
4	see	see	VERB	VB	VerbForm=Inf	7	compound	_	SpaceAfter=No
5	-	-	PUNCT	HYPH	_	6	punct	_	SpaceAfter=No
6	through	thorough	ADJ	JJ	Degree=Pos	7	amod	_	_
7	frog	frog	NOUN	NN	Number=Sing	9	nsubj	_	_
8	be	be	AUX	VB	VerbForm=Inf	9	cop	_	_
9	hard	hard	ADJ	JJ	Degree=Pos	0	root	_	_
10	for	for	SCONJ	IN	_	14	mark	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	bird	bird	NOUN	NN	Number=Sing	14	nsubj	_	_
13	to	to	PART	TO	_	14	mark	_	_
14	spot	spot	VERB	VB	VerbForm=Inf	9	ccomp	_	_
15	on	on	ADP	IN	_	17	case	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
17	leaf	leaf	NOUN	NN	Number=Sing	14	obl	_	SpaceAfter=No
18	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **see** | infinitive |  |  |  |  |  |  | vn comprehend-87.2-1-1 «NP V»: agent=Experiencer |
| 2 | **is** | might | a see through frog |  |  |  |  | hard *property* | tree rules |
| 3 | **spot** | to-infinitive | a bird |  |  | a leaf |  |  | vn weather-57 «It V PP.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 is too small to eat

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t11:o1:1
# text = It is too small to eat
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	too	too	ADV	RB	_	4	advmod	_	_
4	small	small	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	eat	eat	VERB	VB	VerbForm=Inf	4	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | It |  |  |  |  | small *property* | tree rules |
| 2 | **eat** | to-infinitive |  |  |  |  |  |  | vn eat-39.1-1 «NP V»: agent=Agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
It hides under the leaf all day and never comes out to feed

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t11:o2:1
# text = It hides under the leaf all day and never comes out to feed
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	hides	hide	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	under	under	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	leaf	leaf	NOUN	NN	Number=Sing	2	obl	_	_
6	all	all	DET	DT	PronType=Tot	7	det	_	_
7	day	day	NOUN	NN	Number=Sing	2	obl:unmarked	_	_
8	and	and	CCONJ	CC	_	10	cc	_	_
9	never	never	ADV	RB	PronType=Neg	10	advmod	_	_
10	comes	come	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
11	out	out	ADP	RP	_	10	compound:prt	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	feed	feed	VERB	VB	VerbForm=Inf	10	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hide** | present | It |  |  | the leaf | day |  | vn concealment-16-1 «NP V PP.location»: agent=Agent under leaf=Location |
| 2 | **not** **come out** | present |  |  |  |  |  |  | vn become-109.1 «NP V ADJ»: agent=Patient |
| 3 | **feed** | to-infinitive |  |  |  |  |  |  | vn gorge-39.6 «NP V PP.patient»: agent=Agent |

### Option 3 · ← Mova's choice · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Light passes through, so it looks like part of the leaf

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t11:o3:1
# text = Light passes through, so it looks like part of the leaf
1	Light	light	NOUN	NN	Number=Sing	2	nsubj	_	_
2	passes	pass	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	through	through	ADV	RB	_	2	advmod	_	SpaceAfter=No
4	,	,	PUNCT	,	_	7	punct	_	_
5	so	so	ADV	RB	_	7	advmod	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	7	nsubj	_	_
7	looks	look	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
8	like	like	SCONJ	IN	_	9	mark	_	_
9	part	part	NOUN	NN	Number=Sing	7	advcl	_	_
10	of	of	ADP	IN	_	12	case	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	leaf	leaf	NOUN	NN	Number=Sing	9	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pass through** | present | Light |  |  |  |  | through *property* | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **look** | present | it |  |  |  |  |  | vn stimulus\_subject-30.4 «NP V PP.attribute»: agent=Stimulus |

### Option 4 {#o4}

<!-- .ven lang=en -->
Birds cannot see the colour green

```conllu
# sent_id = question:biology:89-amphibian-room-poison-frogs-axolotls-frog-rescue:t11:o4:1
# text = Birds cannot see the colour green
1	Birds	bird	NOUN	NNS	Number=Plur	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	see	see	VERB	VB	VerbForm=Inf	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	colour	colour	NOUN	NN	Number=Sing	7	compound	_	_
7	green	green	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **see** | can | Birds | the colour green |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer green=Stimulus |

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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.

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