---
title: Ascertain the principal difference in feeding between the centipede… — Spiders and other minibeasts under log… · tree and pragmatics
description: Ascertain the principal difference in feeding between the centipede and the millipede. Exam question 4 of lesson 220 «Spiders and other minibeasts under logs and stones» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's
---

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# Exam question 4 · Spiders and other minibeasts under logs and stones

<!-- .ven lang=en -->
Ascertain the principal difference in feeding between the centipede and the millipede.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** you · **What happens:** ascertain · **To what, where:** principal difference, feeding

<!-- .vabout -->
This is exam question 4 of lesson 220 «Spiders and other minibeasts under logs and stones» 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/220-spiders-and-other-minibeasts-under-logs-and-stones/#e4).

## The question {#question}

```conllu
# sent_id = question:biology:220-spiders-and-other-minibeasts-under-logs-and-stones:e4:1
# text = Ascertain the principal difference in feeding between the centipede and the millipede.
1	Ascertain	ascertain	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	difference	difference	NOUN	NN	Number=Sing	1	obj	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	feeding	feeding	NOUN	NN	Number=Sing	4	nmod	_	_
7	between	between	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	centipede	centipede	NOUN	NN	Number=Sing	6	nmod	_	_
10	and	and	CCONJ	CC	_	12	cc	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	_	_
12	millipede	millipede	NOUN	NN	Number=Sing	9	conj	_	SpaceAfter=No
13	.	.	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 principal difference |  | feeding between the centipede and the millipede |  |  | vn discover-84 «NP V NP»: agent=Agent difference=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 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The centipede hunts living prey, whereas the millipede consumes dead plant matter

```conllu
# sent_id = question:biology:220-spiders-and-other-minibeasts-under-logs-and-stones:e4:o1:1
# text = The centipede hunts living prey, whereas the millipede consumes dead plant matter
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	centipede	centipede	NOUN	NN	Number=Sing	3	nsubj	_	_
3	hunts	hunt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	living	living	ADJ	JJ	Degree=Pos	5	amod	_	_
5	prey	prey	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	_	_
7	whereas	whereas	SCONJ	IN	_	10	mark	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	millipede	millipede	NOUN	NN	Number=Sing	10	nsubj	_	_
10	consumes	consume	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	dead	dead	ADJ	JJ	Degree=Pos	13	amod	_	_
12	plant	plant	NOUN	NN	Number=Sing	13	compound	_	_
13	matter	matter	NOUN	NN	Number=Sing	10	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hunt** | present | the centipede | living prey |  |  |  |  | vn hunt-35.1 «NP V NP»: agent=Agent prey=Theme |
| 2 | **consume** | present | the millipede | dead plant matter |  |  |  |  | vn consume-66 «NP V NP»: agent=Agent matter=Asset |

### Option 2 {#o2}

<!-- .ven lang=en -->
Both obtain nourishment by the spinning of webs

```conllu
# sent_id = question:biology:220-spiders-and-other-minibeasts-under-logs-and-stones:e4:o2:1
# text = Both obtain nourishment by the spinning of webs
1	Both	both	DET	DT	PronType=Tot	2	nsubj	_	_
2	obtain	obtain	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	nourishment	nourishment	NOUN	NN	Number=Sing	2	obj	_	_
4	by	by	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	spinning	spinning	NOUN	NN	Number=Sing	2	obl	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	webs	web	NOUN	NNS	Number=Plur	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **obtain** | present | Both | nourishment |  |  |  | by the spinning of webs | vn obtain-13.5.2-1 «NP.asset V NP»: agent=Asset nourishment=Theme |
| 2 | **spin** |  |  | webs |  |  |  |  | nom spinning «act transitive»: of=patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
Both are exclusively consumers of living plants

```conllu
# sent_id = question:biology:220-spiders-and-other-minibeasts-under-logs-and-stones:e4:o3:1
# text = Both are exclusively consumers of living plants
1	Both	both	DET	DT	PronType=Tot	4	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	exclusively	exclusively	ADV	RB	_	4	advmod	_	_
4	consumers	consumer	NOUN	NNS	Number=Plur	0	root	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	living	living	ADJ	JJ	Degree=Pos	7	amod	_	_
7	plants	plant	NOUN	NNS	Number=Plur	4	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Both | consumers |  |  |  | of living plants; exclusively *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
The millipede hunts living prey, whereas the centipede consumes dead plant matter

```conllu
# sent_id = question:biology:220-spiders-and-other-minibeasts-under-logs-and-stones:e4:o4:1
# text = The millipede hunts living prey, whereas the centipede consumes dead plant matter
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	millipede	millipede	NOUN	NN	Number=Sing	3	nsubj	_	_
3	hunts	hunt	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	living	living	ADJ	JJ	Degree=Pos	5	amod	_	_
5	prey	prey	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	10	punct	_	_
7	whereas	whereas	SCONJ	IN	_	10	mark	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	centipede	centipede	NOUN	NN	Number=Sing	10	nsubj	_	_
10	consumes	consume	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
11	dead	dead	ADJ	JJ	Degree=Pos	13	amod	_	_
12	plant	plant	NOUN	NN	Number=Sing	13	compound	_	_
13	matter	matter	NOUN	NN	Number=Sing	10	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hunt** | present | the millipede | living prey |  |  |  |  | vn hunt-35.1 «NP V NP»: agent=Agent prey=Theme |
| 2 | **consume** | present | the centipede | dead plant matter |  |  |  |  | vn consume-66 «NP V NP»: agent=Agent matter=Asset |

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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.

<!-- /div -->

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- ← previous: [Spiders and other minibeasts under log…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/220-spiders-and-other-minibeasts-under-logs-and-stones/e3/)
- next →: [Pigeons: head bobbing, homing and city…, test 1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/221-pigeons-head-bobbing-homing-and-city-cliffs/t1/)
- ↑ back to [Spiders and other minibeasts under logs and stones](https://md.mova.elamur.ai/free/en/corpora/questions/biology/220-spiders-and-other-minibeasts-under-logs-and-stones/)