Ukraine's forests: bison, elk, lynx, wolves and Carpathian brown bears

Tests: 5 of 11 right · Exam: 4 of 4 right · Kind: ★ · Understood: 12 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 372 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 ✗

Count them: every European bison alive today comes from how many animals?

1. 2 — ← Mova's choice · score 7
2. 120 — score 7
3. 1,200 — score 7
4. 12 — ✓ the right answer · score 7

Why: It took the question to ask what it is done to. It chose option 1 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 139, line 4: «Rebecca Rabbit living in a burrow is the one that is true to life, while Danny Dog's grandad and every other dog, tiny or huge, all belong to one kind of anima…», reached through the remembered sentence the question matched. What matched: the same action «come» (+5); the same doer «animal» (+2). The right option, 4, scored 7. · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · right ✓

Count them: a lynx sits on a snowy rock. How many black ear tufts and how many tails?

1. 2 tufts and 1 short tail — ← Mova's choice · ✓ the right answer · no support
2. 1 tuft and 1 short tail — no support
3. 4 tufts and 1 long tail — no support
4. 2 tufts and 2 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 3 · ★ · wrong ✗

Count them: a camera trap shows 3 wolves. How many legs?

1. 6 — ← Mova's choice · no support
2. 12 — ✓ the right answer · no support
3. 16 — no support
4. 9 — 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 · ★ · wrong ✗

«a bison's just a big cow, i'll go get a selfie close up» What is right?

1. Bison are tame like cows, so go ahead and stand right next to it — ← Mova's choice · no support
2. Stay back, bison are calm but still dangerous up close — ✓ the right answer · no support
3. Only American bison can hurt people — no support
4. Bison are scared of phones — 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 5 · ★ · right ✓

In The Jungle Book Baloo the bear is cuddly and loves to be hugged. What is right about real bears?

1. Real bears are wild and dangerous and must never be fed or approached — ← Mova's choice · ✓ the right answer · score 4
2. Real bears are afraid of all people — score 3
3. Real bears only eat honey — score 3
4. Real bears love hugs from children and only bite grown-ups who tease them — score -1

Why: It took the question to ask which statement is true. It chose option 1 with score 4, against 3 for the next best. Its support: lesson 23, line 5: «Winnie the Pooh and Yogi Bear are friendly and steal honey and picnic baskets; real bears do raid bins and love honey, but a bear used to human food becomes da…», reached through the same lesson line as the sentence the question matched. What matched: the same action «feed» (+4). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · wrong ✗

What would happen if hikers walked silently and surprised a bear on a narrow path?

1. The bear would follow them home as a pet and live in their garden — score 1
2. A startled bear might defend itself, worse than if it heard them coming — ✓ the right answer · score 0
3. Nothing, bears never notice people walking past — ← Mova's choice · score 7
4. The bear would always fall asleep — no support

Why: It took the question to ask what happens next. It chose option 3 with score 7, against 1 for the next best. Its support: lesson 198, line 15: «Cats walk almost silently thanks to soft paw pads and by walking on their toes, and they place their back paws almost exactly where their front paws stepped.», reached through what followed the sentence the question matched. What matched: the same action «walk» (+6); a different doer (counts against) (+1). The right option, 2, scored 0. · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

«there's a giant cow with a beard flap swimming in the bog lol» What animal is it most likely?

1. An elk — ✓ the right answer · no support
2. A European bison — ← Mova's choice · score 4
3. A wild boar — no support
4. A wolf — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 4, the only option with support. Its support: lesson 350, line 15: «A cow can live about 20 years, a horse about 25 to 30, a sheep about 10 to 12, a hen about 8 and a goat about 15, but most farm animals are sold or slaughtered…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+3); the same thing acted on «most farm animals» (+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

Test 8 · ★ · right ✓

Why is a lynx almost never seen even where it lives?

1. It only comes out of its den once a year, in spring — no support
2. It is rare, shy and hunts quietly in thick forest — ← Mova's choice · ✓ the right answer · score 8
3. It lives only in deep caves high up in the mountains — score 0
4. Its fur makes it completely invisible all summer long — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 8, against 0 for the next best. Its support: lesson 372, line 11: «The Eurasian lynx lives in the Carpathians and Polissia, is rare and protected, has big furry snowshoe paws, a short stubby tail and two black ear tufts, and h…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «eurasian lynx» (+3); the same light verb (be, have, do, get, go) (+3); the same property (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · right ✓

«wolves are always the bad guys, every story says so» What is right?

1. Wolves are extinct in Ukraine — no support
2. In the tale Sirko a wolf helps an old dog, and real wolves usually avoid people — ← Mova's choice · ✓ the right answer · score 5
3. Wolves only live in fairy tales — score 1
4. Wolves always attack people on sight, and that is why every story warns us — score 2

Why: It took the question to ask which statement is true. It chose option 2 with score 5, against 2 for the next best. Its support: lesson 240, line 8: «Real wolves rarely attack people and usually avoid them, and bringing wolves back to Yellowstone in 1995 let riverbank trees grow back as elk, a kind of big de…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «people» (+2); the same property (+2); the same action «avoid» (+1). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · wrong ✗

In a cartoon a deer keeps the same antlers its whole life. What is right for an elk?

1. It keeps the same antlers for life, adding one point a year — ← Mova's choice · score 8
2. Its antlers are made of wood — no support
3. Only females grow antlers — score 5
4. It drops its antlers each winter and grows new ones — ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 1 with score 8, against 7 for the next best. Its support: lesson 318, line 3: «Horns are different: a cow or goat keeps its horns for life, a bone core inside a cover of keratin. So deer have antlers, not horns.», reached through the same lesson line as the sentence the question matched. What matched: the same action «keep» (+4); the same circumstance (+3); a different doer (counts against) (+1). The right option, 4, scored 7. · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

Why would a forest need big plant-eaters like bison to stay healthy?

1. Their grazing keeps clearings open, so more kinds of plants and animals live — ← Mova's choice · ✓ the right answer · score 2
2. They stop the rain from falling — no support
3. They eat all the old trees so none are left — score 1
4. They keep the wolves fat, so the wolves never need to hunt any other animals — score 1

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 2, against 1 for the next best. Its support: lesson 372, line 7: «European bison eat grass, leaves, bark and twigs and keep forest clearings open; herds live in reserves in Polissia, the Carpathians and other parts of Ukraine.», reached through the option's own match among the sentences about the question's things. What matched: the same property (+2); the same action «keep» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the principal reason for which the European bison possesses limited genetic variety at present.

1. It reproduces only once in a century — no support
2. The entire present population is descended from merely twelve animals — ← Mova's choice · ✓ the right answer · score 3
3. It was introduced from America in recent decades — no support
4. It has interbred with domestic cattle exclusively for many centuries — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 3, the only option with support. Its support: lesson 372, line 6: «It died out in the wild in the 1920s and was bred back from zoo animals, and every European bison today comes from just 12 animals.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2); the same action «come» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Select the response consistent with the established facts concerning the antlers of the male elk.

1. They are grown each summer and shed each winter — ← Mova's choice · ✓ the right answer · score 5
2. They are composed of wood — no support
3. They are borne solely by the female — score 3
4. They are retained throughout the life of the animal — score 3

Why: It took the question to ask which statement is true. It chose option 1 with score 5, against 3 for the next best. Its support: lesson 372, line 9: «The elk, called a moose in America, is the biggest deer in the world; males grow huge flat antlers each summer and drop them each winter, a pair sometimes abou…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «huge flat antlers» (+2); the same property (+2); the same action «grow» (+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 conduct recommended to persons traversing territory inhabited by brown bears?

1. One ought to talk or sing so that a bear perceives one's approach — ← Mova's choice · ✓ the right answer · score 9
2. One ought to offer food to any bear encountered — score 9
3. One ought to proceed in absolute silence so as not to disturb the bears — score 9
4. One ought to run upon sighting a bear — score 9

Why: It took the question to ask who or what does it. It chose option 1 with score 9, tied with another option at 9 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 314, line 9: «Three kinds of vampire bat live in Central and South America; they make a small cut with razor-sharp teeth and lap up the blood, mostly from cattle, horses and…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); a different action (counts against) (+3); the same doer «three kinds» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Ascertain the reason for which a bear reared in captivity can seldom be released into the wild.

1. It never acquired the skills required to sustain itself — ← Mova's choice · ✓ the right answer · score 3
2. Wild bears invariably adopt it — no support
3. Captivity renders bears unable to walk — no support
4. It is unable to tolerate the climate of forests — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 142, line 2: «Real sloths are slow for a good reason: their leafy food gives very little energy, so they save every bit by moving slowly, keeping a low body temperature and…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «bears» (+2); the same action «hold up» (+1). · the question and its options parsed, with trees and pragmatics

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