---
title: Why would eggs that survive drying be useful in a salty lake? — The microscopic world: tardigrades, mi… · tree and pragmatics
description: Why would eggs that survive drying be useful in a salty lake? Test 7 of lesson 259 «The microscopic world: tardigrades, mites, plankton and other tiny creatures» 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 
---

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# Test 7 · The microscopic world: tardigrades, mites, plankton and ot…

<!-- .ven lang=en -->
Why would eggs that survive drying be useful in a salty lake?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** eggs · **What happens:** survive, dry, be · **To what, where:** salty lake

<!-- .vabout -->
This is test 7 of lesson 259 «The microscopic world: tardigrades, mites, plankton and other tiny creatures» 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/259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures/#t7).

## The question {#question}

```conllu
# sent_id = question:biology:259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures:t7:1
# text = Why would eggs that survive drying be useful in a salty lake?
1	Why	why	ADV	WRB	PronType=Int	8	advmod	_	_
2	would	would	AUX	MD	VerbForm=Fin	8	aux	_	_
3	eggs	egg	NOUN	NNS	Number=Plur	8	nsubj	_	_
4	that	that	PRON	WDT	PronType=Rel	5	nsubj	_	_
5	survive	survive	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	_
6	drying	dry	VERB	VBG	VerbForm=Ger	5	xcomp	_	_
7	be	be	AUX	VB	VerbForm=Inf	8	cop	_	_
8	useful	useful	ADJ	JJ	Degree=Pos	0	root	_	_
9	in	in	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	salty	salty	ADJ	JJ	Degree=Pos	12	amod	_	_
12	lake	lake	NOUN	NN	Number=Sing	8	obl	_	SpaceAfter=No
13	?	?	PUNCT	.	_	8	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **survive** | present | eggs |  |  |  |  |  | tree rules |
| 2 | **dry** | gerund | eggs *not said here* |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 3 | **is** | would | eggs |  |  | a salty lake |  | useful *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 -->
Birds cannot find the dry eggs, because they look just like grains of sand

<!-- fold The tree, 15 words -->
```conllu
# sent_id = question:biology:259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures:t7:o1:1
# text = Birds cannot find the dry eggs, because they look just like grains of sand
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	find	find	VERB	VB	VerbForm=Inf	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	dry	dry	ADJ	JJ	Degree=Pos	7	amod	_	_
7	eggs	egg	NOUN	NNS	Number=Plur	4	obj	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	because	because	SCONJ	IN	_	11	mark	_	_
10	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	11	nsubj	_	_
11	look	look	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
12	just	just	ADV	RB	_	14	advmod	_	_
13	like	like	ADP	IN	_	14	case	_	_
14	grains	grain	NOUN	NNS	Number=Plur	11	obl	_	_
15	of	of	ADP	IN	_	16	case	_	_
16	sand	sand	NOUN	NN	Number=Sing	14	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **find** | can | Birds | the dry eggs |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent egg=Topic |
| 2 | **look** | present | Birds *= bird* |  |  |  |  | like grains of sand | vn stimulus\_subject-30.4 «NP V PP.attribute»: agent=Stimulus |

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

<!-- .ven lang=en -->
When the lake dries up, the eggs wait and hatch when water returns

```conllu
# sent_id = question:biology:259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures:t7:o2:1
# text = When the lake dries up, the eggs wait and hatch when water returns
1	When	when	SCONJ	WRB	_	4	mark	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	lake	lake	NOUN	NN	Number=Sing	4	nsubj	_	_
4	dries	dry	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	advcl	_	_
5	up	up	ADP	RP	_	4	compound:prt	_	SpaceAfter=No
6	,	,	PUNCT	,	_	9	punct	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	eggs	egg	NOUN	NNS	Number=Plur	9	nsubj	_	_
9	wait	wait	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	and	and	CCONJ	CC	_	11	cc	_	_
11	hatch	hatch	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	conj	_	_
12	when	when	SCONJ	WRB	_	14	mark	_	_
13	water	water	NOUN	NN	Number=Sing	14	nsubj	_	_
14	returns	return	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **dry up** | present | the lake |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 2 | **wait** | present | the eggs |  |  |  |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 3 | **hatch** | present | the eggs *not said here* |  |  |  |  |  | vn grow-26.2.1 «NP.patient V PP.product»: agent=Patient |
| 4 | **return** | present | water |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Dry eggs are too salty for birds

```conllu
# sent_id = question:biology:259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures:t7:o3:1
# text = Dry eggs are too salty for birds
1	Dry	dry	ADJ	JJ	Degree=Pos	2	amod	_	_
2	eggs	egg	NOUN	NNS	Number=Plur	5	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	too	too	ADV	RB	_	5	advmod	_	_
5	salty	salty	ADJ	JJ	Degree=Pos	0	root	_	_
6	for	for	ADP	IN	_	7	case	_	_
7	birds	bird	NOUN	NNS	Number=Plur	5	obl	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Dry eggs float better in salt

```conllu
# sent_id = question:biology:259-the-microscopic-world-tardigrades-mites-plankton-and-other-tiny-creatures:t7:o4:1
# text = Dry eggs float better in salt
1	Dry	dry	ADJ	JJ	Degree=Pos	2	amod	_	_
2	eggs	egg	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	float	float	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	better	well	ADV	RBR	Degree=Cmp	3	advmod	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	salt	salt	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float** | present | Dry eggs |  |  | salt |  | well *property* | vn run-51.3.2-2 «NP V PP.location»: agent=Theme in salt=Trajectory |

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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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