The future of life: de-extinction, climate, coral and frozen zoos

Tests: 6 of 11 right · Exam: 2 of 4 right · Kind: ★★ · Understood: 12 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 297 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.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★★ · wrong ✗

«saw Jurassic Park, they got the DNA from a mosquito in amber, so we could totally make a T. rex» What is right?

1. No, because T. rex never existed — ← Mova's choice · score -1
2. Yes, any mosquito in amber has dino DNA — no support
3. No, after 66 million years the DNA is broken and gone — ✓ the right answer · score -1
4. Yes, scientists already have one in a lab, it's just kept secret — no support

Why: It took the question to ask which statement is true. It chose option 1 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 265, line 6: «T. rex lived about 68 to 66 million years ago in western North America and was one of the last big dinosaurs.», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+3). Against it: the same doer «t. rex» (-1); one says «not», the other does not (counts against) (-3). The right option, 3, scored -1. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · right ✓

«they brought back the dire wolf!!! it's real!!» What is the best answer?

1. No, nothing was made at all — no support
2. Yes, and it was dug up alive from the ice — no support
3. Yes, the exact ice age animal is alive again, grown from a fossil tooth — no support
4. They made grey wolves with a few changed genes; scientists argue if that counts — ← Mova's choice · ✓ the right answer · score 12

Why: It took the question to ask what it is done to. It chose option 4 with score 12, the only option with support. Its support: lesson 46, line 13: «Wolves were brought back to Yellowstone in 1995; elk numbers fell and in some places young willows and aspens grew back, though scientists still argue how big…», reached through the same lesson line as the sentence the question matched. What matched: the same action «argue» (+8); the same doer «scientists» (+4). · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · right ✓

A small mountain mouse lives near the top of a mountain. What could happen as the climate warms?

1. It may move up until there is nowhere higher left to go — ← Mova's choice · ✓ the right answer · no support
2. Nothing, mountain tops never warm — no support
3. It will grow wings and fly away to a colder place — no support
4. It will move down to the warm valley, where it likes the heat — no support

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

Test 4 · ★★ · right ✓

Coral and its tiny algae are partners. Why does each need the other?

1. The algae get a home, and they make food from sunlight for the coral — ← Mova's choice · ✓ the right answer · score 10
2. They do not need each other at all — no support
3. The algae paint the coral bright colours to scare away hungry fish — score 2
4. The coral eats the algae and gives nothing back to them — score 6

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 10, against 6 for the next best. Its support: lesson 297, line 9: «Corals turn white, which is called bleaching, when the water is too hot and they push out the tiny algae living in them, which get a home in the coral and make…», reached through the option's own match among the sentences about the question's things. What matched: the same place «sunlight» (+4); the same action «make» (+3); the same thing acted on «food» (+2); the same doer «tiny algae» (+1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · wrong ✗

Count them: a green bridge camera films 2 bears and 3 deer crossing. How many legs and how many tails?

1. 16 legs and 5 tails — ← Mova's choice · no support
2. 20 legs and 10 tails — no support
3. 20 legs and 5 tails — ✓ the right answer · no support
4. 10 legs and 5 tails — no support

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

Test 6 · ★★ · wrong ✗

Why keep frozen cells of animals that are still alive today?

1. To sell them as ice cream — no support
2. So that if they become very rare, their cells can help breed more — ✓ the right answer · score 4
3. Because frozen animals are easier to feed and look after in zoos than live ones — ← Mova's choice · score 5
4. Because living animals do not need help — score 3

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 5, against 4 for the next best. Its support: lesson 117, line 1: «Australian zoos often look after Australia's own odd and wonderful animals: Taronga in Sydney has giraffes with the Opera House behind them, Healesville bred t…», reached through the option's own match among the sentences about the question's things. What matched: the same action «look» (+3); the same circumstance (+1); a different doer (counts against) (+1). The right option, 2, scored 4. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · right ✓

In a cartoon a woolly mammoth and a sabre-toothed cat are best friends in the ice age. If a company made a «mammoth» today, what would it really be?

1. A big hairy cow — no support
2. An elephant with some mammoth genes, a new animal — ← Mova's choice · ✓ the right answer · score 4
3. The same mammoth from the cartoon — score 4
4. A real sabre-toothed cat — no support

Why: It took the question to ask what it is done to. It chose option 2 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 272, line 1: «In the cartoon «Ice Age» a mammoth, a sabre-toothed cat and a ground sloth travel together, and all three were real animals, though they never talked and the s…», reached through the same lesson line as the sentence the question matched. What matched: the same light verb (be, have, do, get, go) (+2); it fills the role the question asks for (+2); the same thing acted on «real animals» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 8 · ★★ · right ✓

«why would anyone build a bridge for crabs lol» What is the reason?

1. Millions of red crabs cross roads on Christmas Island; bridges stop them being squashed — ← Mova's choice · ✓ the right answer · score 10
2. Crabs like to walk high up so they can see the sea from far away — score 3
3. To keep crabs out of the forest — no support
4. Crabs pay to use the bridge — score 3

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 10, against 3 for the next best. Its support: lesson 297, line 13: «Green bridges are bridges over roads covered with soil and plants; they let deer, bears and other animals cross safely, and in Canada's Banff National Park the…», reached through the same lesson line as the sentence the question matched. What matched: the same action «cross» (+4); the same place «christmas island» (+3); the same doer «millions» (+2); the same thing acted on «roads» (+1). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · wrong ✗

What would happen if a country protected 30 percent of its land and sea?

1. Every animal in the country would move into the protected part at once — no support
2. Many animals would have more safe homes, if the protection is real and paid for — ✓ the right answer · no support
3. No animal could live outside it — ← Mova's choice · score 3
4. Hunting would end everywhere in the world — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 113, line 2: «Every snow leopard in zoos is written into one giant family tree called a studbook, and a computer program looks for the pair that is least related, even if th…», reached through the option's own match among the sentences about the question's things. What matched: the same place «one country» (+4); the same action «live» (+3). Against it: a different doer (counts against) (-1); one says «not», the other does not (counts against) (-3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · right ✓

«lab meat? gross, it's just plastic» What is true?

1. It is real meat grown from animal cells, but still expensive — ← Mova's choice · ✓ the right answer · score 7
2. It is made from plastic and paint, so it can't be eaten by anyone — score 0
3. It is only a trick done for films — no support
4. It is meat from robot animals — score 3

Why: It took the question to ask which statement is true. It chose option 1 with score 7, against 3 for the next best. Its support: lesson 297, line 14: «Scientists can grow meat from animal cells in tanks without raising whole animals; it is sold in a few countries, it could use less land, but it is still expen…», reached through the same lesson line as the sentence the question matched. What matched: the same action «grow» (+3); the same thing acted on «meat» (+2); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Test 11 · ★★ · wrong ✗

Where on Earth does life survive that gives scientists hope for life in space?

1. Boiling vents in the deep sea and frozen lakes — ✓ the right answer · score 3
2. Only inside people's homes — ← Mova's choice · score 7
3. Nowhere very hot or very cold — score 7
4. Only warm, sunny meadows full of flowers and bees — score 7

Why: It took the question to ask where. It chose option 2 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 63, line 17: «Some microbes live in extreme places, such as boiling hot springs; the bright rings of Grand Prismatic Spring in Yellowstone are mats of different microbes liv…», reached through the remembered sentence the question matched. What matched: the same action «survive» (+5); the same doer «life» (+2). The right option, 1, scored 3. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Select the response consistent with the established facts concerning the cloning of Tyrannosaurus rex.

1. It is permitted exclusively in museums — no support
2. It has been accomplished in a number of laboratories, though not made public — no support
3. It requires solely a mosquito preserved in amber — ← Mova's choice · score 2
4. It is precluded, since the requisite DNA has not survived sixty-six million years — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 297, line 7: «T. rex cannot be cloned, because cloning needs DNA and dinosaur DNA is long gone; birds are living dinosaurs, so a bird is the closest we can get.», reached through the option's own match among the sentences about the question's things. What matched: the same action «need» (+3). Against it: the same doer «cloning» (-1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Identify the principal cause of the phenomenon designated coral bleaching.

1. The action of strong sunlight upon the pigment of the coral, which fades it — no support
2. The deposition of salt upon the surface of the reef — no support
3. The expulsion of symbiotic algae by corals in water of excessive temperature — ← Mova's choice · ✓ the right answer · score 3
4. The consumption of coral pigment by fish — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 297, line 9: «Corals turn white, which is called bleaching, when the water is too hot and they push out the tiny algae living in them, which get a home in the coral and make…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «corals» (+2); the same thing acted on «tiny algae» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

Which of the following statements most accurately characterises the international objective designated «30 by 30», agreed in 2022?

1. The protection of thirty per cent of land and sea by the year 2030 — ← Mova's choice · ✓ the right answer · no support
2. The establishment of thirty zoological gardens in every state — no support
3. The planting of thirty trees per person by the year 2030 — no support
4. The rescue of thirty species within thirty years — no support

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

Exam question 4 · formal language · wrong ✗

Ascertain the purpose of the facilities hereinafter referred to as frozen zoos.

1. The exhibition of ice sculptures of extinct species — no support
2. The preservation in liquid nitrogen of cells, ova and sperm of rare animals — ✓ the right answer · no support
3. The keeping of living animals in refrigerated enclosures so as to arrest their ageing — ← Mova's choice · score 6
4. The storage of food for animals in zoological gardens — score 2

Why: It took the question to ask which statement is true. It chose option 3 with score 6, against 2 for the next best. Its support: lesson 115, line 10: «Many zoos have stopped keeping elephants, orcas and polar bears if they cannot give them enough space, because these animals often suffered in small spaces (a…», reached through the option's own match among the sentences about the question's things. What matched: the same action «keep» (+3); the same circumstance (+3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

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