---
title: Giants people saw: Steller's sea cow, Haast's eagle, giant lemurs an… — how Mova does on the tests · Biology
description: Lesson 386 of the biology course of Mova's primary school: 5 of 11 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Giants people saw: Steller's sea cow, Haast's eagle, giant lemurs and elephant birds

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**Tests:** 5 of 11 right · **Exam:** 1 of 4 right · **Kind:** plain · **Understood:** 10 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 386 of the biology course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: [the lesson in the corpora](https://md.mova.elamur.ai/free/en/corpora/school/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/).

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### Test 1 · wrong ✗ {#t1}

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«sea cows are just cows that swim lol» What is right?

- **1.** It was a kind of whale shark — no support
- **2.** It was a big seal — no support
- **3.** It was a huge sea animal related to manatees, not a cow — **✓ the right answer** · no support
- **4.** Yes, they were farm cows that learned to swim in the sea — **← Mova's choice** · score 3

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 3, the only option with support. Its support: lesson 386, line 1: «In 1741 sailors stranded on cold islands in the far north Pacific saw huge gentle animals grazing on kelp near the shore, up to about eight metres long. They w…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «sea cows» (+2); the same light verb (be, have, do, get, go) (+1). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t1/)

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### Test 2 · wrong ✗ {#t2}

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Count them: a moa footprint shows 3 forward toes. How many forward toes on both feet of 2 moa?

- **1.** Six — **← Mova's choice** · no support
- **2.** Twelve — **✓ the right answer** · no support
- **3.** Three — no support
- **4.** Eight — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t2/)

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### Test 3 · right ✓ {#t3}

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Count them: 2 ostriches. How many toes in all?

- **1.** Eight — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Six — no support
- **3.** Four — no support
- **4.** Twelve — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t3/)

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### Test 4 · right ✓ {#t4}

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«eagle eating a bird bigger than itself? no way» What is right?

- **1.** Eagles only ever eat mice and other small animals — no support
- **2.** Haast's eagle hunted moa much heavier than itself — **← Mova's choice** · **✓ the right answer** · score 3
- **3.** It ate moa eggs only — score 2
- **4.** Moa were tiny like chickens — no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 3, against 2 for the next best. Its support: lesson 274, line 8: «People arrived in New Zealand around 1300 and hunted the moas, which had never met a hunter on land before; the moas died out within about 200 years, and the H…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «lost big birds» (+2); the same action «hunt» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t4/)

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### Test 5 · right ✓ {#t5}

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«egg bigger than a rugby ball, how many brekkies is that» About how many chicken eggs' worth?

- **1.** About 150 — **← Mova's choice** · **✓ the right answer** · score 6
- **2.** Only about 15 — score 6
- **3.** Only about 5 — score 6
- **4.** About 1,500 — score 6

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**Why:** It took the question to ask what it is done to. It chose option 1 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 75, line 12: «All dinosaurs hatched from eggs; even the biggest eggs were only about the size of a football, because a much bigger egg would need a shell too thick for the b…», reached through the remembered sentence the question matched. What matched: the same light verb (be, have, do, get, go) (+5); the same doer «biggest eggs» (+2); the same property (+1). Against it: a different thing acted on (counts against) (-2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t5/)

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### Test 6 · wrong ✗ {#t6}

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What would have happened if the sea cows had been protected in 1741?

- **1.** They might still be alive today — **✓ the right answer** · no support
- **2.** They would have flown away — no support
- **3.** Nothing could have saved them anyway — no support
- **4.** They would have turned into whales — **← Mova's choice** · score 1

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**Why:** It took the question to ask what happens next. It chose option 4 with score 1, the only option with support. Its support: lesson 386, line 1: «In 1741 sailors stranded on cold islands in the far north Pacific saw huge gentle animals grazing on kelp near the shore, up to about eight metres long. They w…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2). Against it: a different action (counts against) (-1). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t6/)

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### Test 7 · wrong ✗ {#t7}

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In the Madagascar cartoon films King Julien is a lively little lemur. A friend says all lemurs were always small. What is right?

- **1.** Lemurs were never bigger than a cat — no support
- **2.** Lemurs are a kind of squirrel — **← Mova's choice** · score 3
- **3.** Giant lemurs still live in every zoo in Madagascar and in Europe — score 1
- **4.** Some long-gone lemurs were as heavy as a grown man or heavier — **✓ the right answer** · no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 3, against 1 for the next best. Its support: lesson 163, line 15: «The blue-eyed black lemur is one of the few primates other than humans with blue eyes, and it lives only in a small area of northwest Madagascar.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «one» (+2); the same light verb (be, have, do, get, go) (+1). The right option, 4, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t7/)

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### Test 8 · right ✓ {#t8}

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«the Pouakai story is just a fairy tale, nothing real» What is the fair view?

- **1.** It was written last year by a children's author to sell books — no support
- **2.** It proves dragons were real — score 1
- **3.** It may remember the real Haast's eagle, though stories change — **← Mova's choice** · **✓ the right answer** · score 3
- **4.** It is about a sea cow — no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 3, against 1 for the next best. Its support: lesson 386, line 11: «Many people think Māori stories of a huge bird called Pouakai remember Haast's eagle; stories can keep real memories but also change as they are retold.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «eagle» (+2); the same action «remember» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t8/)

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### Test 9 · right ✓ {#t9}

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«we'll bring our dog to the kakapo island, he's chill» Why is that a bad idea?

- **1.** Dogs and rats can kill island birds that never met them — **← Mova's choice** · **✓ the right answer** · score 6
- **2.** Kakapo are too loud for dogs, who would bark at them all night and day — score 1
- **3.** Dogs get seasick on islands — no support
- **4.** Kakapo eat dogs — score -2

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**Why:** It took the question to ask why something happens (its cause). It chose option 1 with score 6, against 1 for the next best. Its support: lesson 386, line 3: «These animals had never met human hunters, so they did not run away. They were big and slow, had few babies, and could not recover when people hunted them, bro…», reached through the same lesson line as the sentence the question matched. What matched: the same action «meet» (+6); the same thing acted on «human hunters» (+2). Against it: a different doer (counts against) (-2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t9/)

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### Test 10 · wrong ✗ {#t10}

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Why are big, slow animals often the first to vanish when things change?

- **1.** They are invisible to hunters — no support
- **2.** They live too long, so they get old and tired and stop eating — **← Mova's choice** · score 1
- **3.** They have few babies and cannot escape or recover fast — **✓ the right answer** · score 1
- **4.** They eat too little — score 1

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**Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 1, tied with another option at 1 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 281, line 4: «Most kinds of living things that ever lived are extinct, so dying out is natural, but today species are vanishing much faster than normal because of people, an…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «living things» (+1). The right option, 3, scored 1. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t10/)

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### Test 11 · wrong ✗ {#t11}

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Which three things together hit island giants after people arrived?

- **1.** Hunting, new animals like rats and dogs, and cut forests — **✓ the right answer** · score 0
- **2.** Snow, earthquakes and floods — **← Mova's choice** · score 3
- **3.** Too much fruit, too much rain and too much sun — score 3
- **4.** Volcanoes, meteors and comets — score 3

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**Why:** It took the question to ask what it is done to. It chose option 2 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 386, line 16: «Island giants often had no fear of people, and hunting, new animals like rats and dogs and cut forests hit them all together.», reached through the remembered sentence the question matched. What matched: the same action «hit» (+4); the same property (+1). Against it: a different thing acted on (counts against) (-2). The right option, 1, scored 0. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/t11/)

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### Exam question 1 · formal language · wrong ✗ {#e1}

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Ascertain the approximate interval between the scientific description of Steller's sea cow and its extinction.

- **1.** Two thousand seven hundred years — **← Mova's choice** · no support
- **2.** Two hundred and seventy years — no support
- **3.** Two years — no support
- **4.** Twenty-seven years — **✓ the right answer** · no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/e1/)

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### Exam question 2 · formal language · right ✓ {#e2}

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Identify the principal prey of Haast's eagle.

- **1.** The moa, a flightless bird of great mass — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Domestic sheep — no support
- **3.** Small rodents of the forest floor of New Zealand — no support
- **4.** Marine fish — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/e2/)

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### Exam question 3 · formal language · wrong ✗ {#e3}

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Select the response consistent with the established facts concerning the dentition of Steller's sea cow.

- **1.** It possessed teeth identical in every respect to those of the manatee and the dugong — **← Mova's choice** · no support
- **2.** It possessed a beak like that of a turtle — no support
- **3.** It possessed long fangs for seizing fish — no support
- **4.** It possessed no teeth, employing rough horny plates to crush seaweed — **✓ the right answer** · no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/e3/)

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### Exam question 4 · formal language · wrong ✗ {#e4}

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Which of the following statements most accurately characterises the vulnerability of island giants to the arrival of human beings?

- **1.** They reproduced so rapidly that hunting by people had no effect whatsoever upon their numbers — **← Mova's choice** · score 10
- **2.** Lacking fear of people, they were exposed to hunting, introduced predators and loss of forest — **✓ the right answer** · no support
- **3.** They were too fast to be caught — no support
- **4.** They had long experience of human hunters — no support

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**Why:** It took the question to ask who or what does it. It chose option 1 with score 10, the only option with support. Its support: lesson 384, line 4: «When climates changed, forests shrank and, in some places, people arrived and hunted, so many giants died out. Today's African elephant is the last of many gia…», reached through a sentence linked to the one the question matched. What matched: the same action «hunt» (+5); the same circumstance (+5). The right option, 2, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/386-giants-people-saw-steller-s-sea-cow-haast-s-eagle-giant-lemurs-and-elephant-birds/e4/)

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- ← previous: [385. Ice Age Ukraine and Europe: cave bears, cave lio…](https://md.mova.elamur.ai/free/en/school-run/biology/385-ice-age-ukraine-and-europe-cave-bears-cave-lions-the-siberian-unicorn-and-mammoth-bone-houses/)
- next →: [387. Clever primates: tool-using chimps, Kanzi the bo…](https://md.mova.elamur.ai/free/en/school-run/biology/387-clever-primates-tool-using-chimps-kanzi-the-bonobo-and-ayumu-s-memory/)
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