---
title: Why might doctors study cone snail venom? — Defences: venom in snakes, jellyfish,… · tree and pragmatics
description: Why might doctors study cone snail venom? Test 11 of lesson 246 «Defences: venom in snakes, jellyfish, scorpions and the platypus» 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 · Defences: venom in snakes, jellyfish, scorpions and the pl…

<!-- .ven lang=en -->
Why might doctors study cone snail venom?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 3 · right ✓ · **Who acts:** doctors · **What happens:** study · **To what, where:** snail venom

<!-- .vabout -->
This is test 11 of lesson 246 «Defences: venom in snakes, jellyfish, scorpions and the platypus» 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/246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus/#t11).

## The question {#question}

```conllu
# sent_id = question:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus:t11:1
# text = Why might doctors study cone snail venom?
1	Why	why	ADV	WRB	PronType=Int	4	advmod	_	_
2	might	might	AUX	MD	VerbForm=Fin	4	aux	_	_
3	doctors	doctor	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	study	study	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
5	cone	cone	NOUN	NN	Number=Sing	6	compound	_	_
6	snail	snail	NOUN	NN	Number=Sing	7	compound	_	_
7	venom	venom	NOUN	NN	Number=Sing	4	obj	_	SpaceAfter=No
8	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **study** | might | doctors | snail venom |  |  |  |  | vn learn-14-1 «NP V NP»: agent=Agent venom=Topic |

<!-- .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 cures colds instantly after one drop

```conllu
# sent_id = question:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus:t11:o1:1
# text = It cures colds instantly after one drop
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	cures	cure	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	colds	cold	NOUN	NNS	Number=Plur	2	obj	_	_
4	instantly	instantly	ADV	RB	_	2	advmod	_	_
5	after	after	ADP	IN	_	7	case	_	_
6	one	one	NUM	CD	NumForm=Word|NumType=Card	7	nummod	_	_
7	drop	drop	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cure** | present | It | colds |  |  | after one drop | instantly *property* | vn free-10.6.3-1-1 «NP V NP PP.theme»: agent=Causer cold=Source |

### Option 2 {#o2}

<!-- .ven lang=en -->
It makes shells grow on people

```conllu
# sent_id = question:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus:t11:o2:1
# text = It makes shells grow on people
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	shells	shell	NOUN	NNS	Number=Plur	2	obj	_	_
4	grow	grow	VERB	VB	VerbForm=Inf	2	xcomp	_	_
5	on	on	ADP	IN	_	6	case	_	_
6	people	people	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | It | shells |  |  |  |  | tree rules |
| 2 | **grow** | infinitive | shells *not said here* |  |  |  |  | on people | vn appear-48.1.1 «NP V PP.location»: agent=Theme on people=Location |

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

<!-- .ven lang=en -->
Pain medicines have been made from it

```conllu
# sent_id = question:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus:t11:o3:1
# text = Pain medicines have been made from it
1	Pain	pain	NOUN	NN	Number=Sing	2	compound	_	_
2	medicines	medicine	NOUN	NNS	Number=Plur	5	nsubj:pass	_	_
3	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	been	be	AUX	VBN	Tense=Past|VerbForm=Part	5	aux:pass	_	_
5	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	from	from	ADP	IN	_	7	case	_	_
7	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · perfect · passive |  | Pain medicines |  | it |  |  | vn build-26.1-1 «NP.asset V PP»: subject=Product from it=Material |

### Option 4 {#o4}

<!-- .ven lang=en -->
It turns water into fuel for cars and boats

```conllu
# sent_id = question:biology:246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus:t11:o4:1
# text = It turns water into fuel for cars and boats
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	water	water	NOUN	NN	Number=Sing	2	obj	_	_
4	into	into	ADP	IN	_	5	case	_	_
5	fuel	fuel	NOUN	NN	Number=Sing	2	obl	_	_
6	for	for	ADP	IN	_	7	case	_	_
7	cars	car	NOUN	NNS	Number=Plur	5	nmod	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	boats	boat	NOUN	NNS	Number=Plur	7	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn** | present | It | water |  | fuel for cars and boats |  |  | vn roll-51.3.1 «NP V NP PP.trajectory»: agent=Agent water=Theme into fuel=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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