---
title: Ascertain the reason for which farmers plant clover or beans in orde… — Plants deeper: roots and how they drin… · tree and pragmatics
description: Ascertain the reason for which farmers plant clover or beans in order to improve their fields. Exam question 4 of lesson 250 «Plants deeper: roots and how they drink, hold and push» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each op
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/250-plants-deeper-roots-and-how-they-drink-hold-and-push/e4/)

<!-- 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/) / [Plants deeper: roots and how they drin…](https://md.mova.elamur.ai/free/en/corpora/questions/biology/250-plants-deeper-roots-and-how-they-drink-hold-and-push/) / e4

# Exam question 4 · Plants deeper: roots and how they drink, hold and push

<!-- .ven lang=en -->
Ascertain the reason for which farmers plant clover or beans in order to improve their fields.

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** you, farmers · **What happens:** ascertain, plant, improve · **To what, where:** reason, clover, order, fields

<!-- .vabout -->
This is exam question 4 of lesson 250 «Plants deeper: roots and how they drink, hold and push» 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/250-plants-deeper-roots-and-how-they-drink-hold-and-push/#e4).

## The question {#question}

```conllu
# sent_id = question:biology:250-plants-deeper-roots-and-how-they-drink-hold-and-push:e4:1
# text = Ascertain the reason for which farmers plant clover or beans in order to improve their fields.
1	Ascertain	ascertain	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	which	which	PRON	WDT	PronType=Rel	7	obl	_	_
6	farmers	farmer	NOUN	NNS	Number=Plur	7	nsubj	_	_
7	plant	plant	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	acl:relcl	_	_
8	clover	clover	NOUN	NN	Number=Sing	7	obj	_	_
9	or	or	CCONJ	CC	_	10	cc	_	_
10	beans	bean	NOUN	NNS	Number=Plur	8	conj	_	_
11	in	in	ADP	IN	_	12	case	_	_
12	order	order	NOUN	NN	Number=Sing	7	obl	_	_
13	to	to	PART	TO	_	14	mark	_	_
14	improve	improve	VERB	VB	VerbForm=Inf	7	advcl	_	_
15	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	16	nmod:poss	_	_
16	fields	field	NOUN	NNS	Number=Plur	14	obj	_	SpaceAfter=No
17	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **ascertain** | imperative | you *not said here* | the reason |  |  |  |  | vn discover-84 «NP V NP»: agent=Agent reason=Topic |
| 2 | **plant** | present | farmers | clover or beans |  | order |  | for the reason | vn put-9.1-1 «NP V NP PP.destination»: agent=Agent clover=Theme in order=Destination |
| 3 | **improve** | to-infinitive | farmers *not said here* | farmers's fields |  |  |  |  | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent field=Patient |

<!-- .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 -->
The plants draw all the stones out of the soil

```conllu
# sent_id = question:biology:250-plants-deeper-roots-and-how-they-drink-hold-and-push:e4:o1:1
# text = The plants draw all the stones out of the soil
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	plants	plant	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	draw	draw	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	all	all	DET	PDT	PronType=Tot	6	det:predet	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	stones	stone	NOUN	NNS	Number=Plur	3	obj	_	_
7	out	out	ADP	IN	_	10	case	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	soil	soil	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **draw** | present | the plants | all stones |  | the soil |  |  | vn carry-11.4 «NP V NP PP.initial\_location»: agent=Agent stone=Theme out soil=Initial\_Location |

### Option 2 {#o2}

<!-- .ven lang=en -->
The leaves poison the weeds of the following year, so that the field remains clear of them

<!-- fold The tree, 17 words -->
```conllu
# sent_id = question:biology:250-plants-deeper-roots-and-how-they-drink-hold-and-push:e4:o2:1
# text = The leaves poison the weeds of the following year, so that the field remains clear of them
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	leaves	leaf	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	poison	poison	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	weeds	weed	NOUN	NNS	Number=Plur	3	obj	_	_
6	of	of	ADP	IN	_	9	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
8	following	follow	VERB	VBG	VerbForm=Ger	9	amod	_	_
9	year	year	NOUN	NN	Number=Sing	5	nmod	_	SpaceAfter=No
10	,	,	PUNCT	,	_	15	punct	_	_
11	so	so	SCONJ	IN	ExtPos=SCONJ	15	mark	_	_
12	that	that	SCONJ	IN	_	11	fixed	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	field	field	NOUN	NN	Number=Sing	15	nsubj	_	_
15	remains	remain	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
16	clear	clear	ADJ	JJ	Degree=Pos	15	xcomp	_	_
17	of	of	ADP	IN	_	18	case	_	_
18	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	16	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **poison** | present | the leaves | the weeds of the following year |  |  |  |  | vn poison-42.2 «NP V NP»: agent=Agent weed=Patient |
| 2 | **follow** | gerund |  |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |
| 3 | **remain** | present | the field |  |  |  |  | clear *property* | vn exist-47.1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
The roots render the soil impervious to rain

```conllu
# sent_id = question:biology:250-plants-deeper-roots-and-how-they-drink-hold-and-push:e4:o3:1
# text = The roots render the soil impervious to rain
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	roots	root	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	render	render	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	soil	soil	NOUN	NN	Number=Sing	3	obj	_	_
6	impervious	impervious	ADJ	JJ	Degree=Pos	8	amod	_	_
7	to	to	PART	TO	_	8	mark	_	_
8	rain	rain	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **render** | present | the roots | the soil |  |  |  | impervious rain *obl* | vn give-13.1 «NP V NP»: agent=Agent soil=Theme |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Bacteria in the root nodules furnish the soil with nitrogen drawn from the air

```conllu
# sent_id = question:biology:250-plants-deeper-roots-and-how-they-drink-hold-and-push:e4:o4:1
# text = Bacteria in the root nodules furnish the soil with nitrogen drawn from the air
1	Bacteria	bacterium	NOUN	NNS	Number=Plur	6	nsubj	_	_
2	in	in	ADP	IN	_	5	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
4	root	root	NOUN	NN	Number=Sing	5	compound	_	_
5	nodules	nodule	NOUN	NNS	Number=Plur	1	nmod	_	_
6	furnish	furnish	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	soil	soil	NOUN	NN	Number=Sing	6	obj	_	_
9	with	with	ADP	IN	_	10	case	_	_
10	nitrogen	nitrogen	NOUN	NN	Number=Sing	6	obl	_	_
11	drawn	draw	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
12	from	from	ADP	IN	_	14	case	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	air	air	NOUN	NN	Number=Sing	11	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **furnish** | present | Bacteria in the root nodules | the soil |  |  |  | with nitrogen | vn fulfilling-13.4.1-1 «NP V NP-Fulfilling PP.theme»: agent=Agent soil=Recipient with nitrogen=Theme |
| 2 | **draw** | participle |  | nitrogen *not said here* |  |  |  | from the air | vn split-23.2 «NP V PP.co-patient»: agent=Patient from air=Co-Patient |

<!-- 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: [Plants deeper: roots and how they drin…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/250-plants-deeper-roots-and-how-they-drink-hold-and-push/e3/)
- next →: [Plants deeper: leaves and sunlight, ho…, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/251-plants-deeper-leaves-and-sunlight-how-a-tree-is-made-of-air/t1/)
- ↑ back to [Plants deeper: roots and how they drink, hold and push](https://md.mova.elamur.ai/free/en/corpora/questions/biology/250-plants-deeper-roots-and-how-they-drink-hold-and-push/)