Trees

Tests: 6 of 12 right · Exam: 1 of 4 right · Kind: ★★★ · Understood: 12 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 60 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 ✗

What might a very thin tree ring tell you about that year?

1. It was the tree's birthday — no support
2. The tree grew the fastest it ever has — ← Mova's choice · score 9
3. Someone painted a thin line on the tree that year — no support
4. It was a hard year, perhaps dry or cold — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 9, the only option with support. Its support: lesson 12, line 6: «A tree grows one new ring of wood each year, light spring wood and darker summer wood; wide rings mean good years and thin rings mean hard dry years.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «tree» (+5); the same action «grow» (+4). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★★ · wrong ✗

Why might growing slowly help a tree live longer?

1. Slow trees sleep more — no support
2. Slow wood is dense and tough, and the harsh place keeps pests away — ✓ the right answer · no support
3. Growing fast makes trees explode — ← Mova's choice · score 4
4. Slow trees are protected by law and nobody is allowed to cut them down — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 4, the only option with support. Its support: lesson 60, line 14: «Beech trees make a thick roof of leaves, so little grows beneath them except plants like bluebells that flower in spring before the beech leaves open.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2); the same doer «beech trees» (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 3 · ★★★ · right ✓

What would make it hard for a tree to grow much taller than Hyperion?

1. Lifting water so high up to the top leaves gets too hard — ← Mova's choice · ✓ the right answer · score 4
2. Birds would not land on it — no support
3. The clouds would push it down — no support
4. The bark would get far too heavy for the trunk to hold up any longer — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 4, the only option with support. Its support: lesson 60, line 8: «The tallest known living tree is a coast redwood called Hyperion, about 116 metres tall, and the giant sequoia General Sherman is the biggest by volume; much t…», reached through the same lesson line as the sentence the question matched. What matched: the same place «top leaves» (+3); it fills the role the question asks for (+2); the same thing acted on «water» (+1). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 4 · ★★★ · right ✓

If your friend reckons the big redwood in the photo is the biggest tree in the world by volume, what do you say?

1. No, all redwoods are the same size — no support
2. Yes, the tallest is always the biggest, that's how it works — no support
3. Not quite: Hyperion is tallest, but General Sherman is biggest — ← Mova's choice · ✓ the right answer · score 10
4. No, the biggest tree is an oak in England — score 3

Why: It took the question to ask what it is done to. It chose option 3 with score 10, against 3 for the next best. Its support: lesson 60, line 8: «The tallest known living tree is a coast redwood called Hyperion, about 116 metres tall, and the giant sequoia General Sherman is the biggest by volume; much t…», reached through the remembered sentence the question matched. What matched: the same doer «giant sequoia general sherman» (+4); the same light verb (be, have, do, get, go) (+4); the same property (+2). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★★ · wrong ✗

Why can cork be taken from a cork oak again and again?

1. Cork comes from the roots, not the bark — no support
2. The cork oak grows a whole new trunk each year after the old one — ← Mova's choice · score 4
3. It can't, the tree dies after one peel — no support
4. Only the thick outer bark is peeled, and the living layer grows more — ✓ the right answer · no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, the only option with support. Its support: lesson 35, line 12: «A jay can hide thousands of acorns in autumn and remember many of the spots in winter; the forgotten ones grow into oaks.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same action «grow» (+2). Against it: a different doer (counts against) (-1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★★★ · right ✓

Why would one oak tree be home for over 2000 kinds of living things?

1. All 2000 kinds eat only acorns — no support
2. It is big, lives for centuries and offers leaves, bark, acorns and holes — ← Mova's choice · ✓ the right answer · score 3
3. Oaks give out a sweet smell that pulls in animals from miles around — no support
4. Animals are not allowed in other trees — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, the only option with support. Its support: lesson 3, line 6: «Only about 2 per cent of sunlight reaches the floor of a thick rainforest, so few plants grow there except where a big tree has fallen.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «big tree» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 7 · ★★★ · wrong ✗

How could you use a pine cone to tell the weather?

1. It turns blue before it rains — ← Mova's choice · no support
2. Open scales mean dry air, closed scales mean damp air — ✓ the right answer · no support
3. It falls off the tree when snow is on the way, a day early — no support
4. It ticks like a clock in the sun — 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 8 · ★★★ · right ✓

in that cartoon the trees are lonely and don't talk at all. true?

1. Trees chat using sounds we can't hear, and it has all been proven by scientists — no support
2. Roots are linked by fungi that trade water and food, though how much is argued — ← Mova's choice · ✓ the right answer · score 11
3. Trees send messages through their leaves to the clouds — score 3
4. Yes, trees have no links at all with anything — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 11, against 3 for the next best. Its support: lesson 60, line 5: «Cartoons show trees as lonely and silent; under the ground their roots are joined to fungi that swap water and minerals for sugar, and some scientists think tr…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «fungi» (+5); the same action «swap» (+4); the same thing acted on «water» (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★★ · right ✓

Why do bluebells flower early in spring in a beech wood?

1. Beech trees tell them when to flower — no support
2. The bees only come out in March, and the bluebells must catch them — no support
3. They bloom before the beech leaves open and block out the light — ← Mova's choice · ✓ the right answer · score 4
4. They like the cold better than the warm — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 4, the only option with support. Its support: lesson 60, line 14: «Beech trees make a thick roof of leaves, so little grows beneath them except plants like bluebells that flower in spring before the beech leaves open.», reached through the option's own match among the sentences about the question's things. What matched: the same action «flower» (+2); the same doer «bluebells» (+2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★★★ · wrong ✗

Why is it important to keep old forests as well as plant new trees?

1. It isn't, one new tree does just the same job as a whole old forest — ← Mova's choice · no support
2. Old trees make no oxygen at all — no support
3. Old forests hold lots of carbon and are home to many living things — ✓ the right answer · no support
4. New trees are always better than old ones — 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 11 · ★★★ · wrong ✗

Why are so many rainforest animals good at climbing or flying?

1. They are scared of the rain — no support
2. The forest floor is covered in deep water all year, so nothing can walk there — score 3
3. Climbing keeps them warm — ← Mova's choice · score 5
4. Most of the fruit, flowers and leaves are up in the canopy — ✓ the right answer · no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 5, against 3 for the next best. Its support: lesson 29, line 12: «Crocodiles are cold-blooded: they bask in the sun to warm up and gape their mouths to let heat escape, and can go months without eating, because an animal that…», reached through the option's own match among the sentences about the question's things. What matched: the same action «keep» (+2); the same doer «animal» (+2); the same property (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 12 · ★★★ · right ✓

Why might a baobab drop its leaves in the dry season?

1. Because the leaves are too heavy — no support
2. Because the animals have eaten them all — score 2
3. To let more sunlight in to dry out and harden the trunk — no support
4. To stop losing water through its leaves when there is no rain — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 5, against 2 for the next best. Its support: lesson 60, line 16: «The baobab stores large amounts of water in its spongy trunk to survive months without rain, drops its leaves in the dry season so it does not lose water throu…», reached through a sentence linked to the one the question matched. What matched: the same action «lose» (+3); the same thing acted on «water» (+3); the same doer «baobab» (+2). Against it: one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the information most reliably conveyed by the annual rings of a tree.

1. The age of the tree and the character of each growing season — ✓ the right answer · no support
2. The height to which the tree will ultimately grow in its lifetime — ← Mova's choice · score 4
3. The quantity of water presently stored in the trunk — no support
4. The number of animals inhabiting the tree — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 60, line 6: «Each year a tree grows a new ring of wood under its bark; scientists use tree rings to learn about the weather hundreds or thousands of years ago.», reached through the remembered sentence the question matched. What matched: the same action «grow» (+2); the same doer «tree» (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Which of the following statements most accurately characterises the opening of the scales of a pine cone?

1. The scales open in wet weather to admit rain — ← Mova's choice · no support
2. The scales open nightly to release pollen — no support
3. The scales open only when a squirrel strikes the cone with sufficient force — no support
4. The scales open in dry weather, permitting the dispersal of winged seeds — ✓ the right answer · 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 3 · formal language · right ✓

Select the response consistent with the established facts concerning the so-called wood wide web.

1. It denotes the branches of adjacent trees touching overhead — no support
2. It is a system of wires installed by foresters — no support
3. It is a proven network by which trees converse in speech — no support
4. Roots are joined to fungi, though how far trees share food is disputed — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, the only option with support. Its support: lesson 60, line 15: «Many tree roots are joined to fungi, a link sometimes called the «wood wide web»; the mushrooms are only the fruit of a much bigger fungus underground, and wil…», reached through the same lesson line as the sentence the question matched. What matched: the same action «join» (+4); the same thing acted on «many tree roots» (+2); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain the proportion of the land surface of the Earth covered by tropical rainforests.

1. Approximately one half — ← Mova's choice · no support
2. Approximately six per cent — ✓ the right answer · no support
3. Approximately one per thousand — no support
4. Approximately ninety per cent — 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/60-trees/