---
title: Endangered animals and extinction — how Mova does on the tests · Biology
description: Lesson 77 of the biology course of Mova's primary school: 4 of 11 tests right, exam 3 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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[home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/) / 77

# Endangered animals and extinction

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**Tests:** 4 of 11 right · **Exam:** 3 of 4 right · **Kind:** ★ · **Understood:** 7 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 77 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/77-endangered-animals-and-extinction/).

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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/77-endangered-animals-and-extinction/).

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### Test 1 · ★ · right ✓ {#t1}

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In a cartoon, the dodo is a fat, silly bird that waddles off a cliff. What is right?

- **1.** The dodo suited its island and died out because of people and ship animals — **← Mova's choice** · **✓ the right answer** · score 4
- **2.** Yes, all dodos fell off cliffs — no support
- **3.** Yes, the dodo was too stupid to live, which is why it fell off cliffs and died — score 4
- **4.** The dodo is not extinct and lives in zoos — no support

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 77, line 4: «Cartoons draw the dodo as a fat, stupid bird that deserved to vanish; in truth it was well suited to its island, and it died out because sailors' rats, pigs an…», reached through the option's own match among the sentences about the question's things. What matched: the same action «die out» (+2); the same doer «dodo» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/77-endangered-animals-and-extinction/t1/)

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### Test 2 · ★ · wrong ✗ {#t2}

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«there were billions of them, no way a bird like that dies out» What does the passenger pigeon show?

- **1.** Passenger pigeons are still flying today — no support
- **2.** Only rare animals ever go extinct — no support
- **3.** Even the commonest animal can disappear when hunted and its forests lost — **✓ the right answer** · no support
- **4.** Common animals can never die out, however many people hunt them — **← Mova's choice** · score 2

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**Why:** It took the question to ask who or what does it. It chose option 4 with score 2, the only option with support. Its support: lesson 34, line 1: «Birds of prey, also called raptors, hunt other animals with sharp eyes, hooked beaks and gripping feet with curved talons.», reached through the option's own match among the sentences about the question's things. What matched: the same action «hunt» (+2); the same thing acted on «other animals» (+1). Against it: a different doer (counts against) (-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/77-endangered-animals-and-extinction/t2/)

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### Test 3 · ★ · wrong ✗ {#t3}

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«my uncle saw a Tasmanian tiger last year, swear down» What is right?

- **1.** No, thylacines never existed at all — **← Mova's choice** · no support
- **2.** Many sightings were reported, but no clear proof any survived — **✓ the right answer** · no support
- **3.** Yes, the zoo released some in 2000 — no support
- **4.** Yes, thousands still live in the forests of Tasmania today — 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/77-endangered-animals-and-extinction/t3/)

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### Test 4 · ★ · wrong ✗ {#t4}

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«rhino horn cures fevers, my mate's gran says» What is right?

- **1.** No, rhino horn is poisonous to eat — **← Mova's choice** · no support
- **2.** Rhino horn is keratin like fingernails and has no healing power — **✓ the right answer** · no support
- **3.** Yes, rhino horn cures every illness — no support
- **4.** Yes, but only if it is ground into powder and mixed with hot water — 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/77-endangered-animals-and-extinction/t4/)

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### Test 5 · ★ · wrong ✗ {#t5}

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What would happen if a vaquita and a tiger both lost the same number of animals?

- **1.** Both would be equally safe — **← Mova's choice** · no support
- **2.** The vaquita, with only about 10 left, would be closer to extinction — **✓ the right answer** · no support
- **3.** Neither, because both live everywhere — no support
- **4.** The tiger would be in more danger, as it is bigger and needs more food — 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/77-endangered-animals-and-extinction/t5/)

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### Test 6 · ★ · right ✓ {#t6}

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Why does a long childhood make orangutans slow to recover?

- **1.** Long childhoods make orangutans weak and lazy when they grow up — no support
- **2.** Orangutans stop having babies after one — no support
- **3.** Each mother raises a baby for about 7 to 8 years, so few are born — **← Mova's choice** · **✓ the right answer** · score 2
- **4.** Babies never leave their mothers — no support

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**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 2, the only option with support. Its support: lesson 77, line 9: «Orangutans live only on Borneo and Sumatra and are critically endangered, as their forest is cut for timber and palm oil; a mother stays with her baby for abou…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «mother» (+4). Against it: a different action (counts against) (-2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/77-endangered-animals-and-extinction/t6/)

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### Test 7 · ★ · right ✓ {#t7}

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«it's only one plastic bag, the sea's massive, who cares» What is right?

- **1.** One bag can't reach the sea from a beach — score 7
- **2.** Plastic dissolves in the sea within a day — score 11
- **3.** Turtles never eat anything that floats on top of the water, only things on the sea bed — score 11
- **4.** A turtle can mistake it for a jellyfish, and plastic can make it starve — **← Mova's choice** · **✓ the right answer** · score 13

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**Why:** It took the question to ask who or what does it. It chose option 4 with score 13, against 11 for the next best. Its support: lesson 8, line 15: «Sea turtles eat jellyfish and can mistake floating plastic bags for them; plastic can block the stomach so the turtle feels full and starves, and tiny micropla…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same doer «sea turtles» (+4); the same circumstance (+2); a different action (counts against) (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/77-endangered-animals-and-extinction/t7/)

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### Test 8 · ★ · wrong ✗ {#t8}

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«no bees, so what, I don't even like honey» Why would losing bees matter?

- **1.** Bees are pests that eat fruit — no support
- **2.** Many food crops benefit from pollinating animals like bees — **✓ the right answer** · no support
- **3.** Losing bees would make more flowers grow — no support
- **4.** Bees only make honey and do nothing else that is useful to anybody — **← Mova's choice** · score 6

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 58, line 5: «Cartoons show bees making honey by squeezing flowers, or a single sunflower as one big flower; real bees turn nectar into honey inside the hive, and a sunflowe…», reached through the remembered sentence the question matched. What matched: the same thing acted on «honey» (+5); the same action «make» (+2). Against it: the same doer «bees» (-1). 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/77-endangered-animals-and-extinction/t8/)

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### Test 9 · ★ · wrong ✗ {#t9}

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«penguins live up north too, the great auk was one» What is right?

- **1.** No, the great auk was a kind of eagle that lived on the cliffs of Iceland — **← Mova's choice** · score 9
- **2.** The great auk was first called a penguin but was no kin of southern penguins — **✓ the right answer** · score 7
- **3.** No, the great auk was a seal — no support
- **4.** Yes, penguins live at both poles today — score 4

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 9, against 7 for the next best. Its support: lesson 35, line 7: «Polar bears live only in the Arctic and penguins live in the southern half of the world, so in the wild they never meet.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «polar bears» (+5); the same action «live» (+4). The right option, 2, scored 7. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/77-endangered-animals-and-extinction/t9/)

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### Test 10 · ★ · wrong ✗ {#t10}

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Which Red List category would a very common bird like a pigeon be in?

- **1.** Extinct — **← Mova's choice** · no support
- **2.** Endangered — no support
- **3.** Least concern — **✓ the right answer** · no support
- **4.** Critically endangered — 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/77-endangered-animals-and-extinction/t10/)

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### Test 11 · ★ · right ✓ {#t11}

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Why are animals on islands often in more danger than those on big continents?

- **1.** Island animals are slower thinkers than animals on the big continents and cannot learn — no support
- **2.** Islands sink into the sea every year — no support
- **3.** Islands are always too hot — no support
- **4.** They live in a small area and often have no defence against new animals — **← Mova's choice** · **✓ the right answer** · score 4

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**Why:** It took the question to ask why something happens (its cause). It chose option 4 with score 4, the only option with support. Its support: lesson 73, line 2: «If some of those differences help an animal survive and raise more young, the next generation has a little more of them, and over thousands of generations smal…», reached through a sentence linked to the one the question matched. What matched: the same action «survive» (+3); the same doer «animal» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/77-endangered-animals-and-extinction/t11/)

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

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Identify the principal cause of the extinction of the dodo upon the island of Mauritius.

- **1.** A severe winter which froze the island — **← Mova's choice** · no support
- **2.** Its own lack of intelligence, which prevented it from finding sufficient food — no support
- **3.** The predation of its eggs by animals introduced by ships, and hunting — **✓ the right answer** · no support
- **4.** An eruption of a volcano which covered the island — 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/77-endangered-animals-and-extinction/e1/)

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

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Select the response consistent with the established facts concerning the composition of rhinoceros horn.

- **1.** It consists of keratin, the material of hair and nails, without medicinal property — **← Mova's choice** · **✓ the right answer** · no support
- **2.** It consists of stone and is poisonous when ingested — no support
- **3.** It consists of ivory and possesses proven healing properties — no support
- **4.** It consists of bone and cures fevers when it has been ground to a powder and dissolved in water — 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/77-endangered-animals-and-extinction/e2/)

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### Exam question 3 · formal language · right ✓ {#e3}

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Which of the following statements most accurately characterises the IUCN Red List?

- **1.** It is a worldwide record of the degree to which each species is threatened — **← Mova's choice** · **✓ the right answer** · no support
- **2.** It is a catalogue of animals of a red colouration, compiled for the purposes of identification — no support
- **3.** It is a schedule of animals available for purchase by zoos — no support
- **4.** It is a register of the animals most dangerous to human beings — 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/77-endangered-animals-and-extinction/e3/)

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### Exam question 4 · formal language · right ✓ {#e4}

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State the year in which the last known passenger pigeon, named Martha, died at Cincinnati Zoo.

- **1.** Nineteen hundred and fourteen — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Nineteen hundred and thirty-six — no support
- **3.** Eighteen hundred and forty-four — no support
- **4.** Sixteen hundred and sixty-two — 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/77-endangered-animals-and-extinction/e4/)

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- ← previous: [76. The end of the dinosaurs, and birds as living di…](https://md.mova.elamur.ai/free/en/school-run/biology/76-end-of-the-dinosaurs-and-birds/)
- next →: [78. Conservation: how people help animals come back](https://md.mova.elamur.ai/free/en/school-run/biology/78-conservation-animals-come-back/)
- ↑ back to [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/)