--- title: «half an eye is useless so eyes can't evolve» What is right? — Evolution: why giraffes really have lo… · tree and pragmatics description: «half an eye is useless so eyes can't evolve» What is right? Test 9 · ★★ of lesson 278 «Evolution: why giraffes really have long necks» 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. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/biology/278-evolution-why-giraffes-really-have-long-necks/t9/) [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/) / [Evolution: why giraffes really have lo…](https://md.mova.elamur.ai/free/en/corpora/questions/biology/278-evolution-why-giraffes-really-have-long-necks/) / t9 # Test 9 · ★★ · Evolution: why giraffes really have long necks «half an eye is useless so eyes can't evolve» What is right? **Mova's choice:** option 3 · **The right answer:** option 1 · wrong ✗ · **Who acts:** eye, eyes · **What happens:** be, not evolve This is test 9 · ★★ of lesson 278 «Evolution: why giraffes really have long necks» 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/278-evolution-why-giraffes-really-have-long-necks/#t9). ## The question {#question} ```conllu # sent_id = question:biology:278-evolution-why-giraffes-really-have-long-necks:t9:1 # text = «half an eye is useless so eyes can't evolve» What is right? 1 « « PUNCT `` _ 6 punct _ SpaceAfter=No 2 half half DET PDT NumForm=Word|NumType=Frac|PronType=Ind 4 det:predet _ _ 3 an a DET DT Definite=Ind|PronType=Art 4 det _ _ 4 eye eye NOUN NN Number=Sing 6 nsubj _ _ 5 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 6 cop _ _ 6 useless useless ADJ JJ Degree=Pos 0 root _ _ 7 so so ADV RB _ 11 advmod _ _ 8 eyes eye NOUN NNS Number=Plur 11 nsubj _ _ 9 ca can AUX MD VerbForm=Fin 11 aux _ SpaceAfter=No 10 n't not PART RB Polarity=Neg 11 advmod _ _ 11 evolve evolve VERB VB VerbForm=Inf 6 advcl _ SpaceAfter=No 12 » » PUNCT '' _ 11 punct _ _ 13 What what PRON WP PronType=Int 15 nsubj _ _ 14 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 15 cop _ _ 15 right right ADJ JJ Degree=Pos 11 ccomp _ SpaceAfter=No 16 ? ? PUNCT . _ 6 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is** *in a quote* | present | half eye | | | | | useless *property* | tree rules | | 2 | **not** **evolve** *in a quote* | can | eyes | | | | | | vn appear-48.1.1 «NP V»: agent=Theme | | 3 | **is** | present | | | | | | right *property* | tree rules | 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 · ✓ the right answer {#o1} A simple light patch is already useful, and every stage between exists in animals today ```conllu # sent_id = question:biology:278-evolution-why-giraffes-really-have-long-necks:t9:o1:1 # text = A simple light patch is already useful, and every stage between exists in animals today 1 A a DET DT Definite=Ind|PronType=Art 4 det _ _ 2 simple simple ADJ JJ Degree=Pos 4 amod _ _ 3 light light NOUN NN Number=Sing 4 compound _ _ 4 patch patch NOUN NN Number=Sing 7 nsubj _ _ 5 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 cop _ _ 6 already already ADV RB _ 7 advmod _ _ 7 useful useful ADJ JJ Degree=Pos 0 root _ SpaceAfter=No 8 , , PUNCT , _ 13 punct _ _ 9 and and CCONJ CC _ 13 cc _ _ 10 every every DET DT PronType=Tot 11 det _ _ 11 stage stage NOUN NN Number=Sing 13 nsubj _ _ 12 between between ADP IN _ 11 nmod _ _ 13 exists exist VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 7 conj _ _ 14 in in ADP IN _ 15 case _ _ 15 animals animal NOUN NNS Number=Plur 13 obl _ _ 16 today today NOUN NN Number=Sing 13 obl:unmarked _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is** | present | a simple light patch | | | | | useful *property* | tree rules | | 2 | **exist** | present | every stage | | | | today | in animals | vn exist-47.1 «NP V PP.location»: agent=Theme in animal=Location | ### Option 2 {#o2} Right, only people have eyes ```conllu # sent_id = question:biology:278-evolution-why-giraffes-really-have-long-necks:t9:o2:1 # text = Right, only people have eyes 1 Right right INTJ UH _ 5 discourse _ SpaceAfter=No 2 , , PUNCT , _ 1 punct _ _ 3 only only ADV RB _ 4 advmod _ _ 4 people people NOUN NNS Number=Plur 5 nsubj _ _ 5 have have VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 6 eyes eye NOUN NNS Number=Plur 5 obj _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **have** | present | people | eyes | | | | | vn birth-28.2-1 «NP V NP»: agent=Agent eye=Patient | ### Option 3 · ← Mova's choice {#o3} Eyes evolved from teeth ```conllu # sent_id = question:biology:278-evolution-why-giraffes-really-have-long-necks:t9:o3:1 # text = Eyes evolved from teeth 1 Eyes eye NOUN NNS Number=Plur 2 nsubj _ _ 2 evolved evolve VERB VBD Mood=Ind|Tense=Past|VerbForm=Fin 0 root _ _ 3 from from ADP IN _ 4 case _ _ 4 teeth tooth NOUN NNS Number=Plur 2 obl _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **evolve** | past | Eyes | | | | | from teeth | vn grow-26.2.1 «NP.product V PP.patient»: agent=Product from tooth=Patient | ### Option 4 {#o4} Right, eyes came all at once ```conllu # sent_id = question:biology:278-evolution-why-giraffes-really-have-long-necks:t9:o4:1 # text = Right, eyes came all at once 1 Right right INTJ UH _ 3 discourse _ SpaceAfter=No 2 , , PUNCT , _ 1 punct _ _ 3 eyes eye NOUN NNS Number=Plur 4 nsubj _ _ 4 came come VERB VBD Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 5 all all ADV RB _ 4 advmod _ _ 6 at at ADP IN _ 7 case _ _ 7 once once ADV RB NumForm=Word|NumType=Mult 4 obl _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **come** | past | eyes | | | | | all *property* | vn appear-48.1.1 «NP V PP.location»: agent=Theme at once=Location | **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. - ← previous: [Evolution: why giraffes really have lo…, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/biology/278-evolution-why-giraffes-really-have-long-necks/t8/) - next →: [Evolution: why giraffes really have lo…, test 10](https://md.mova.elamur.ai/free/en/corpora/questions/biology/278-evolution-why-giraffes-really-have-long-necks/t10/) - ↑ back to [Evolution: why giraffes really have long necks](https://md.mova.elamur.ai/free/en/corpora/questions/biology/278-evolution-why-giraffes-really-have-long-necks/)