---
title: A scientist grew a willow tree in a pot for five years: the tree gai… — How plants make their food · tree and pragmatics
description: A scientist grew a willow tree in a pot for five years: the tree gained many kilograms, the soil lost very little. Where did the mass come from? Test 3 · ★ of lesson 22 «How plants make their food» of the world course of Mova's primary school, with the dependency tree and pragmatics of the question 
---

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# Test 3 · ★ · How plants make their food

<!-- .ven lang=en -->
A scientist grew a willow tree in a pot for five years: the tree gained many kilograms, the soil lost very little. Where did the mass come from?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** scientist, tree, soil, mass · **What happens:** grow, gain, lose, come · **To what, where:** willow tree, pot, many kilograms, little

<!-- .vabout -->
This is test 3 · ★ of lesson 22 «How plants make their food» of the world 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/world/22-photosynthesis/#t3).

## The question {#question}

<!-- .note -->
*Sentence 1:* A scientist grew a willow tree in a pot for five years: the tree gained many kilograms, the soil lost very little.

```conllu
# sent_id = question:world:22-photosynthesis:t3:1
# text = A scientist grew a willow tree in a pot for five years: the tree gained many kilograms, the soil lost very little.
1	A	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	scientist	scientist	NOUN	NN	Number=Sing	3	nsubj	_	_
3	grew	grow	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	willow	willow	NOUN	NN	Number=Sing	6	compound	_	_
6	tree	tree	NOUN	NN	Number=Sing	3	obj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	pot	pot	NOUN	NN	Number=Sing	3	obl	_	_
10	for	for	ADP	IN	_	12	case	_	_
11	five	five	NUM	CD	NumForm=Word|NumType=Card	12	nummod	_	_
12	years	year	NOUN	NNS	Number=Plur	3	obl	_	SpaceAfter=No
13	:	:	PUNCT	:	_	16	punct	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	tree	tree	NOUN	NN	Number=Sing	16	nsubj	_	_
16	gained	gain	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	3	parataxis	_	_
17	many	many	ADJ	JJ	Degree=Pos	18	amod	_	_
18	kilograms	kilogram	NOUN	NNS	Number=Plur	16	obj	_	SpaceAfter=No
19	,	,	PUNCT	,	_	22	punct	_	_
20	the	the	DET	DT	Definite=Def|PronType=Art	21	det	_	_
21	soil	soil	NOUN	NN	Number=Sing	22	nsubj	_	_
22	lost	lose	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	16	conj	_	_
23	very	very	ADV	RB	_	24	advmod	_	_
24	little	little	ADJ	JJ	Degree=Pos	22	obj	_	SpaceAfter=No
25	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | past | a scientist | a willow tree |  | a pot | year |  | vn appear-48.1.1 «PP.location V NP»: agent=Location tree=Theme |
| 2 | **gain** | past | the tree | many kilograms |  |  |  |  | vn get-13.5.1-1 «NP V NP»: agent=Agent kilogram=Theme |
| 3 | **lose** | past | the soil | little |  |  |  |  | vn succeed-74-3-1 «NP V NP»: agent=Agent little=Eventuality |

<!-- .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:* Where did the mass come from?

```conllu
# sent_id = question:world:22-photosynthesis:t3:2
# text = Where did the mass come from?
1	Where	where	ADV	WRB	PronType=Rel	5	advmod	_	_
2	did	do	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	5	aux	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	mass	mass	NOUN	NN	Number=Sing	5	nsubj	_	_
5	come	come	VERB	VB	VerbForm=Inf	0	root	_	_
6	from	from	ADP	IN	_	5	obl	_	SpaceAfter=No
7	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **come** | past · do-support | the mass |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Mostly from the pot itself

```conllu
# sent_id = question:world:22-photosynthesis:t3:o1:1
# text = Mostly from the pot itself
1	Mostly	mostly	ADV	RB	_	4	advmod	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	pot	pot	NOUN	NN	Number=Sing	0	root	_	_
5	itself	itself	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Emp|Reflex=Yes	4	nmod:unmarked	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
Mostly from the sunlight's weight

```conllu
# sent_id = question:world:22-photosynthesis:t3:o2:1
# text = Mostly from the sunlight's weight
1	Mostly	mostly	ADV	RB	_	6	advmod	_	_
2	from	from	ADP	IN	_	6	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	sunlight	sunlight	NOUN	NN	Number=Sing	6	nmod:poss	_	SpaceAfter=No
5	's	's	PART	POS	_	4	case	_	_
6	weight	weight	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
Mostly from the soil in the pot

```conllu
# sent_id = question:world:22-photosynthesis:t3:o3:1
# text = Mostly from the soil in the pot
1	Mostly	mostly	ADV	RB	_	4	advmod	_	_
2	from	from	ADP	IN	_	4	case	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	soil	soil	NOUN	NN	Number=Sing	0	root	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	pot	pot	NOUN	NN	Number=Sing	4	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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

<!-- .ven lang=en -->
Mostly from air and water

```conllu
# sent_id = question:world:22-photosynthesis:t3:o4:1
# text = Mostly from air and water
1	Mostly	mostly	ADV	RB	_	3	advmod	_	_
2	from	from	ADP	IN	_	3	case	_	_
3	air	air	NOUN	NN	Number=Sing	0	root	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	water	water	NOUN	NN	Number=Sing	3	conj	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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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