---
title: Identify the principal reason for which carnivorous plants capture a… — Carnivorous and strange plants · tree and pragmatics
description: Identify the principal reason for which carnivorous plants capture animal prey. Exam question 1 of lesson 61 «Carnivorous and strange plants» 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 wrong.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/61-carnivorous-and-strange-plants/e1/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/questions/biology/) / [Carnivorous and strange plants](https://md.mova.elamur.ai/free/en/corpora/questions/biology/61-carnivorous-and-strange-plants/) / e1

# Exam question 1 · Carnivorous and strange plants

<!-- .ven lang=en -->
Identify the principal reason for which carnivorous plants capture animal prey.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** you, carnivorous plants · **What happens:** identify, capture · **To what, where:** principal reason, animal prey

<!-- .vabout -->
This is exam question 1 of lesson 61 «Carnivorous and strange plants» 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/61-carnivorous-and-strange-plants/#e1).

## The question {#question}

```conllu
# sent_id = question:biology:61-carnivorous-and-strange-plants:e1:1
# text = Identify the principal reason for which carnivorous plants capture animal prey.
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	PRON	WDT	PronType=Rel	9	obl	_	_
7	carnivorous	carnivorous	ADJ	JJ	Degree=Pos	8	amod	_	_
8	plants	plant	NOUN	NNS	Number=Plur	9	nsubj	_	_
9	capture	capture	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
10	animal	animal	NOUN	NN	Number=Sing	11	compound	_	_
11	prey	prey	NOUN	NN	Number=Sing	9	obj	_	SpaceAfter=No
12	.	.	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 | **capture** | present | carnivorous plants | animal prey |  |  |  | for the principal reason | vn steal-10.5-1 «NP V NP PP.beneficiary»: agent=Agent prey=Theme for which=Beneficiary |

<!-- .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 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
To supply themselves with water in drought

```conllu
# sent_id = question:biology:61-carnivorous-and-strange-plants:e1:o1:1
# text = To supply themselves with water in drought
1	To	to	PART	TO	_	2	mark	_	_
2	supply	supply	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	themselves	themselves	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs|Reflex=Yes	2	obj	_	_
4	with	with	ADP	IN	_	5	case	_	_
5	water	water	NOUN	NN	Number=Sing	2	obl	_	_
6	in	in	ADP	IN	_	7	case	_	_
7	drought	drought	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **supply** | to-infinitive |  | themselves *= they* |  | drought |  | with water | vn fulfilling-13.4.1-1 «NP V NP-Fulfilling PP.theme»: agent=Agent themselves=Recipient with water=Theme |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
To obtain nitrogen and minerals scarce in their boggy habitat

```conllu
# sent_id = question:biology:61-carnivorous-and-strange-plants:e1:o2:1
# text = To obtain nitrogen and minerals scarce in their boggy habitat
1	To	to	PART	TO	_	2	mark	_	_
2	obtain	obtain	VERB	VB	VerbForm=Inf	6	advcl	_	_
3	nitrogen	nitrogen	NOUN	NN	Number=Sing	2	obj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	minerals	mineral	NOUN	NNS	Number=Plur	3	conj	_	_
6	scarce	scarce	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
7	in	in	ADP	IN	_	10	case	_	_
8	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
9	boggy	boggy	ADJ	JJ	Degree=Pos	10	amod	_	_
10	habitat	habitat	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **obtain** | to-infinitive |  | nitrogen and minerals |  |  |  |  | vn obtain-13.5.2-1 «NP.asset V NP»: agent=Asset nitrogen=Theme |
| 2 | **scarce** | present |  |  |  | minerals's boggy habitat |  |  | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
To obtain all the energy required for growth, sunlight being insufficient

```conllu
# sent_id = question:biology:61-carnivorous-and-strange-plants:e1:o3:1
# text = To obtain all the energy required for growth, sunlight being insufficient
1	To	to	PART	TO	_	2	mark	_	_
2	obtain	obtain	VERB	VB	VerbForm=Inf	12	advcl	_	_
3	all	all	DET	PDT	PronType=Tot	5	det:predet	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	energy	energy	NOUN	NN	Number=Sing	2	obj	_	_
6	required	require	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	acl	_	_
7	for	for	ADP	IN	_	8	case	_	_
8	growth	growth	NOUN	NN	Number=Sing	6	obl	_	SpaceAfter=No
9	,	,	PUNCT	,	_	10	punct	_	_
10	sunlight	sunlight	NOUN	NN	Number=Sing	2	obl	_	_
11	being	be	AUX	VBG	Tense=Pres|VerbForm=Part	12	cop	_	_
12	insufficient	insufficient	ADJ	JJ	Degree=Pos	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **obtain** | to-infinitive |  | all energy |  |  |  | sunlight *obl* | vn obtain-13.5.2-1 «NP.asset V NP»: agent=Asset energy=Theme |
| 2 | **require** | participle |  | all energy *not said here* |  |  |  | for growth | vn require-103-1 «NP V NP S\_INF»: agent=Theme |
| 3 | **is** | gerund |  |  |  |  |  | insufficient *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
To defend their flowers from insect damage

```conllu
# sent_id = question:biology:61-carnivorous-and-strange-plants:e1:o4:1
# text = To defend their flowers from insect damage
1	To	to	PART	TO	_	2	mark	_	_
2	defend	defend	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
3	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	flowers	flower	NOUN	NNS	Number=Plur	2	obj	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	insect	insect	NOUN	NN	Number=Sing	7	compound	_	_
7	damage	damage	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **defend** | to-infinitive |  | their flowers |  |  |  | from insect damage | vn defend-72.3 «NP V NP PP.theme»: agent=Agent flower=Beneficiary from damage=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 -->

<!-- pn -->
- ← previous: [Carnivorous and strange plants, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/biology/61-carnivorous-and-strange-plants/t11/)
- next →: [Carnivorous and strange plants, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/61-carnivorous-and-strange-plants/e2/)
- ↑ back to [Carnivorous and strange plants](https://md.mova.elamur.ai/free/en/corpora/questions/biology/61-carnivorous-and-strange-plants/)