---
title: «echidnas = hedgehogs, same thing» What is right? — The platypus and the echidna: mammals… · tree and pragmatics
description: «echidnas = hedgehogs, same thing» What is right? Test 7 of lesson 43 «The platypus and the echidna: mammals that lay eggs» 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.
---

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# Test 7 · The platypus and the echidna: mammals that lay eggs

<!-- .ven lang=en -->
«echidnas = hedgehogs, same thing» What is right?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** same thing · **What happens:** be

<!-- .vabout -->
This is test 7 of lesson 43 «The platypus and the echidna: mammals that lay eggs» 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/43-platypus-and-echidna/#t7).

## The question {#question}

```conllu
# sent_id = question:biology:43-platypus-and-echidna:t7:1
# text = «echidnas = hedgehogs, same thing» What is right?
1	«	«	PUNCT	``	_	2	punct	_	SpaceAfter=No
2	echidnas	echidna	NOUN	NNS	Number=Plur	0	root	_	_
3	=	=	SYM	SYM	_	4	punct	_	_
4	hedgehogs	hedgehog	NOUN	NNS	Number=Plur	2	conj	_	SpaceAfter=No
5	,	,	PUNCT	,	_	7	punct	_	_
6	same	same	ADJ	JJ	Degree=Pos	7	amod	_	_
7	thing	thing	NOUN	NN	Number=Sing	2	conj	_	SpaceAfter=No
8	»	»	PUNCT	''	_	7	punct	_	_
9	What	what	PRON	WP	PronType=Int	11	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	cop	_	_
11	right	right	ADJ	JJ	Degree=Pos	7	acl:relcl	_	SpaceAfter=No
12	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | same thing |  |  |  |  | right *property* | tree rules |

<!-- .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 -->
Yes, they are the same animal, just with different names in Australia

```conllu
# sent_id = question:biology:43-platypus-and-echidna:t7:o1:1
# text = Yes, they are the same animal, just with different names in Australia
1	Yes	yes	INTJ	UH	Polarity=Pos	7	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
4	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	same	same	ADJ	JJ	Degree=Pos	7	amod	_	_
7	animal	animal	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
8	,	,	PUNCT	,	_	12	punct	_	_
9	just	just	ADV	RB	_	12	advmod	_	_
10	with	with	ADP	IN	_	12	case	_	_
11	different	different	ADJ	JJ	Degree=Pos	12	amod	_	_
12	names	name	NOUN	NNS	Number=Plur	7	nmod	_	_
13	in	in	ADP	IN	_	14	case	_	_
14	Australia	Australia	PROPN	NNP	Number=Sing	12	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | they | the same animal |  |  |  | with different names in Australia | tree rules |

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

<!-- .ven lang=en -->
No, an echidna lays eggs; a hedgehog gives birth to live young

```conllu
# sent_id = question:biology:43-platypus-and-echidna:t7:o2:1
# text = No, an echidna lays eggs; a hedgehog gives birth to live young
1	No	no	INTJ	UH	Polarity=Neg	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	5	punct	_	_
3	an	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	echidna	echidna	NOUN	NN	Number=Sing	5	nsubj	_	_
5	lays	lay	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	eggs	egg	NOUN	NNS	Number=Plur	5	obj	_	SpaceAfter=No
7	;	;	PUNCT	:	_	10	punct	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	hedgehog	hedgehog	NOUN	NN	Number=Sing	10	nsubj	_	_
10	gives	give	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
11	birth	birth	NOUN	NN	Number=Sing	10	obj	_	_
12	to	to	PART	TO	_	13	mark	_	_
13	live	live	VERB	VB	VerbForm=Inf	10	xcomp	_	_
14	young	young	ADJ	JJ	Degree=Pos	13	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lay** | present | a echidna | eggs |  |  |  |  | vn create-26.4 «NP V NP»: agent=Agent egg=Result |
| 2 | **give** | present | a hedgehog | birth |  |  |  |  | tree rules |
| 3 | **live** | to-infinitive | a hedgehog *not said here* |  |  |  |  | young *property* | vn exist-47.1-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Yes, both lay eggs

```conllu
# sent_id = question:biology:43-platypus-and-echidna:t7:o3:1
# text = Yes, both lay eggs
1	Yes	yes	INTJ	UH	Polarity=Pos	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	both	both	DET	DT	PronType=Tot	4	nsubj	_	_
4	lay	lay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	eggs	egg	NOUN	NNS	Number=Plur	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lay** | present | both | eggs |  |  |  |  | vn create-26.4 «NP V NP»: agent=Agent egg=Result |

### Option 4 {#o4}

<!-- .ven lang=en -->
No, an echidna is a kind of porcupine fish

```conllu
# sent_id = question:biology:43-platypus-and-echidna:t7:o4:1
# text = No, an echidna is a kind of porcupine fish
1	No	no	INTJ	UH	Polarity=Neg	7	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	an	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	echidna	echidna	NOUN	NN	Number=Sing	7	nsubj	_	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	cop	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	kind	kind	NOUN	NN	Number=Sing	0	root	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	porcupine	porcupine	NOUN	NN	Number=Sing	10	compound	_	_
10	fish	fish	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | a echidna | a kind |  |  |  | of porcupine fish | tree rules |

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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: [The platypus and the echidna: mammals…, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/biology/43-platypus-and-echidna/t6/)
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