---
title: Cuttlefish seem to be colour-blind. Which is true? — The aquarium: jellyfish, octopuses, se… · tree and pragmatics
description: Cuttlefish seem to be colour-blind. Which is true? Test 10 · ★ of lesson 92 «The aquarium: jellyfish, octopuses, sea stars and the deep sea» 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 10 · ★ · The aquarium: jellyfish, octopuses, sea stars and the deep…

<!-- .ven lang=en -->
Cuttlefish seem to be colour-blind. Which is true?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** Cuttlefish · **What happens:** seem, be

<!-- .vabout -->
This is test 10 · ★ of lesson 92 «The aquarium: jellyfish, octopuses, sea stars and the deep sea» 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/92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* Cuttlefish seem to be colour-blind.

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:1
# text = Cuttlefish seem to be colour-blind.
1	Cuttlefish	cuttlefish	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	seem	seem	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	to	to	PART	TO	_	5	mark	_	_
4	be	be	AUX	VB	VerbForm=Inf	5	cop	_	_
5	colour	colour	ADJ	JJ	Degree=Pos	2	xcomp	_	SpaceAfter=No
6	-	-	PUNCT	HYPH	_	7	punct	_	SpaceAfter=No
7	blind	blind	ADJ	JJ	Degree=Pos	5	conj	_	SpaceAfter=No
8	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **seem** | present | Cuttlefish |  |  |  |  |  | vn seem-109-1-1-1 «NP V S\_INF»: agent=Theme |
| 2 | **is** | to-infinitive | Cuttlefish *not said here* |  |  |  |  | colour *property* | tree rules |
| 3 | **be** |  | Cuttlefish *not said here* |  |  |  |  |  | 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.

<!-- .note -->
*Sentence 2:* Which is true?

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:2
# text = Which is true?
1	Which	which	PRON	WDT	PronType=Rel	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present |  |  |  |  |  | true *property* | tree rules |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
They cannot change colour at all, so they just stay grey

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:o1:1
# text = They cannot change colour at all, so they just stay grey
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
2	can	can	AUX	MD	VerbForm=Fin	4	aux	_	SpaceAfter=No
3	not	not	PART	RB	Polarity=Neg	4	advmod	_	_
4	change	change	VERB	VB	VerbForm=Inf	0	root	_	_
5	colour	colour	NOUN	NN	Number=Sing	4	obj	_	_
6	at	at	ADP	IN	_	7	case	_	_
7	all	all	DET	DT	PronType=Tot	4	obl	_	SpaceAfter=No
8	,	,	PUNCT	,	_	12	punct	_	_
9	so	so	ADV	RB	_	12	advmod	_	_
10	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	12	nsubj	_	_
11	just	just	ADV	RB	_	12	advmod	_	_
12	stay	stay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
13	grey	grey	ADJ	JJ	Degree=Pos	12	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **change** | can | They | colour |  | all |  |  | vn dress-41.1.1-1-1 «NP V NP»: agent=Agent colour=Patient |
| 2 | **stay** | present | they |  |  |  |  | grey *property* | vn exist-47.1 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
They only turn black and white

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:o2:1
# text = They only turn black and white
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	only	only	ADV	RB	_	3	advmod	_	_
3	turn	turn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	black	black	ADJ	JJ	Degree=Pos	3	xcomp	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	white	white	ADJ	JJ	Degree=Pos	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn** | present | They |  |  |  |  | black *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |

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

<!-- .ven lang=en -->
They still match their backgrounds very well

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:o3:1
# text = They still match their backgrounds very well
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	still	still	ADV	RB	_	3	advmod	_	_
3	match	match	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	backgrounds	background	NOUN	NNS	Number=Plur	3	obj	_	_
6	very	very	ADV	RB	_	7	advmod	_	_
7	well	well	ADV	RB	Degree=Pos	3	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **match** | present | They | their backgrounds |  |  | still | well *property* | vn amalgamate-22.2-1 «NP V NP»: agent=Agent background=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
They copy the colours of other fish

```conllu
# sent_id = question:biology:92-the-aquarium-jellyfish-octopuses-sea-stars-and-the-deep-sea:t10:o4:1
# text = They copy the colours of other fish
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	copy	copy	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	colours	colour	NOUN	NNS	Number=Plur	2	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	other	other	ADJ	JJ	Degree=Pos	7	amod	_	_
7	fish	fish	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **copy** | present | They | the colours of other fish |  |  |  |  | vn scribble-25.2 «NP V NP»: agent=Agent colour=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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