Ukraine's plants: sunflowers, viburnum, poppies, lime trees and steppe grasses

Tests: 7 of 11 right · Exam: 1 of 4 right · Kind: ★ · Understood: 10 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 377 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: a poppy has 4 red petals. How many petals on 6 poppies?

1. 10 — ← Mova's choice · no support
2. 30 — no support
3. 24 — ✓ the right answer · no support
4. 20 — 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 2 · ★ · wrong ✗

Count them: a wild tulip has 6 petal parts. You see 3 tulips. How many petal parts?

1. 24 — ← Mova's choice · no support
2. 9 — no support
3. 12 — no support
4. 18 — ✓ 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

Test 3 · ★ · right ✓

Count them: sunflower seed spirals counted one way give 34 and the other way 55. How many more spirals one way?

1. 21 — ← Mova's choice · ✓ the right answer · no support
2. 11 — no support
3. 19 — no support
4. 89 — 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 ✗

In Plants vs. Zombies sunflowers make sunshine for the garden. What is right about real sunflowers?

1. They glow at night — score 1
2. They use sunlight to make food; they do not make sunshine — ✓ the right answer · score 3
3. They make light for other plants — ← Mova's choice · score 6
4. They store sunshine in their seeds to shine in winter — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, against 3 for the next best. Its support: lesson 57, line 12: «Pea plants climb with tendrils that wrap round whatever they touch, reaching the light without building a thick stem; ivy climbs with tiny gripping roots.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same thing acted on «light» (+2); the same action «reach» (+1). The right option, 2, scored 3. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · right ✓

«sunflowers have always been ukrainian, like forever» What is right?

1. They came from North America and reached Europe in the 1500s — ← Mova's choice · ✓ the right answer · score 6
2. They first grew wild in the steppe near Kyiv — score 4
3. They came from Africa only last year on a big cargo ship to Odesa — score 1
4. They came from the Moon — score 1

Why: It took the question to ask which statement is true. It chose option 1 with score 6, against 4 for the next best. Its support: lesson 377, line 8: «Sunflowers came from North America, reached Europe in the 1500s, and oil was pressed from them in the Russian Empire in the 1800s; historians report it spread…», reached through the option's own match among the sentences about the question's things. What matched: the same place «1500s» (+4); the same action «reach» (+1); the same receiver «europe» (+1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · wrong ✗

«mate's dog keeps shaking its head after a steppe walk» What might be the cause?

1. The dog is cold and wet after swimming in a pond — no support
2. A sharp feather grass seed stuck in its ear — ✓ the right answer · no support
3. The dog is dancing to music — no support
4. The dog likes the wind — ← Mova's choice · score -1

Why: It took the question to ask which statement is true. It chose option 4 with score -1, the only option with support. Its support: lesson 192, line 2: «All dogs come from wolves that started living near people more than fifteen thousand years ago; much later people chose which dogs had puppies, keeping the one…», reached through the option's own match among the sentences about the question's things. What matched: the same action «like» (+1). Against it: a different thing acted on (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · right ✓

How can a plant from another continent become a national symbol?

1. It has to be invented in that country by its own scientists — no support
2. It must be planted by a king — no support
3. It changes its colour to match the flag — score 4
4. People grow and see it every day for hundreds of years — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask what something is like. It chose option 4 with score 8, against 4 for the next best. Its support: lesson 377, line 3: «Some plants become symbols because people see them every day near home: kalyna with red winter berries, sung about in Oi u luzi chervona kalyna, and the red po…», reached through a sentence linked to the one the question matched. What matched: the same action «see» (+5); the same thing acted on «plants» (+3). · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · right ✓

«i'll eat the kalyna berries off the bush now, it's summer» What will they taste like?

1. Very bitter, until frosts soften them — ← Mova's choice · ✓ the right answer · score 14
2. Salty like crisps — no support
3. Like nothing at all, just like water from a tap — no support
4. Sweet like strawberries and cream — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 14, the only option with support. Its support: lesson 377, line 9: «Kalyna, guelder rose or viburnum, is a symbol of Ukraine; its berries are very bitter until frosts soften them, birds eat them in winter, and each berry has on…», reached through the same lesson line as the sentence the question matched. What matched: the same action «soften» (+5); the same doer «frosts» (+4); it fills the role the question asks for (+3); the same thing acted on «berries» (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · right ✓

Why would grass roots make richer soil than a pine forest's needles?

1. Many roots die and rot deep in the ground every year — ← Mova's choice · ✓ the right answer · score 8
2. Pine trees drink all the soil — score 0
3. Pine needles are made of metal — score 0
4. Grass makes soil out of air and rain all by itself, without any help — score 2

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 8, against 2 for the next best. Its support: lesson 377, line 16: «Ukraine's black earth, chornozem, was built over thousands of years by steppe grass roots dying and rotting into the ground, and in places it is about a metre…», reached through the same lesson line as the sentence the question matched. What matched: the same action «die» (+6); the same doer «steppe grass roots» (+2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

What would happen to poppies on a field that is never dug or ploughed again?

1. Poppies would become blue — no support
2. Other plants would grow over it and the poppies would slowly fade out — ← Mova's choice · ✓ the right answer · score 5
3. There would be many more poppies every single year, until the field was all red — no support
4. Poppies would turn into trees — score 1

Why: It took the question to ask which statement is true. It chose option 2 with score 5, against 1 for the next best. Its support: lesson 345, line 5: «Rice can grow in flooded fields because air passes down spongy tubes in its stems to the roots, and flooding drowns many weeds; some farmers keep ducks or fish…», reached through the option's own match among the sentences about the question's things. What matched: the same place «flooded fields» (+4); the same action «grow» (+1). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

Why is a self-drilling seed useful on hard dry steppe ground?

1. It makes the soil softer for cows — score 0
2. It plants itself where it could not just fall in — ← Mova's choice · ✓ the right answer · score 1
3. It helps the seed fly far away — score 1
4. It keeps birds from flying — score 0

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 377, line 5: «Each sunflower head is hundreds or over a thousand tiny flowers, and its seeds sit in spirals that, counted one way and the other, often give 34 and 55, number…», reached through the option's own match among the sentences about the question's things. What matched: one says «not», the other does not (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principal reason for which a sunflower head ought not to be regarded as a single flower.

1. It is a fruit rather than a flower, since it contains a great many seeds — ← Mova's choice · score 5
2. It is composed of a single enormous petal — no support
3. It consists of hundreds or upwards of a thousand minute flowers — ✓ the right answer · score 3
4. It is a leaf that has turned yellow — no support

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 59, line 5: «Cartoons show a tomato as a vegetable and a banana full of big seeds; to a scientist a fruit is the part that grows from the flower and holds the seeds, so a t…», reached through the same lesson line as the sentence the question matched. What matched: the same action «hold» (+4); the same thing acted on «seeds» (+1). The right option, 3, scored 3. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Select the response consistent with the established facts concerning the origin of the sunflower.

1. It originated in Ukraine — ← Mova's choice · no support
2. It was introduced from Australia in recent decades by merchants and travellers — no support
3. It originated in North America and reached Europe in the sixteenth century — ✓ the right answer · no support
4. It was first cultivated in China — 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 · wrong ✗

Which of the following statements most accurately characterises the formation of chornozem?

1. It consists of coal dust — ← Mova's choice · no support
2. It was deposited by volcanic eruptions — no support
3. It was formed over millennia through the decay of the roots of steppe grasses — ✓ the right answer · no support
4. It was formed within a single century by the labour of agriculture and fertilisers — 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 · right ✓

Ascertain the means by which the seed of feather grass is conveyed into the soil.

1. It is washed deep into the ground by the flood water of the spring rivers each year — no support
2. It falls vertically under its own weight — no support
3. It is buried by moles — no support
4. Its awn twists when dry and untwists when damp, driving the seed into the soil — ← Mova's choice · ✓ the right answer · score 6

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 377, line 15: «Feather grass, kovyl, has seeds with long feathery tails that twist when dry and untwist when damp, slowly screwing the seed into the soil; its sharp seeds can…», reached through the option's own match among the sentences about the question's things. What matched: the same place «soil» (+4); the same thing acted on «seed» (+2). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/377-ukraine-s-plants-sunflowers-viburnum-poppies-lime-trees-and-steppe-grasses/