China's plants: bamboo, ginkgo, lotus, tea and rice paddies

Tests: 3 of 12 right · Exam: 3 of 4 right · Kind: ★ · Understood: 12 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 380 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 tea picker takes one bud and the top two leaves from each of 5 shoots. How many pieces?

1. 5 — ← Mova's choice · no support
2. 20 — no support
3. 15 — ✓ the right answer · no support
4. 10 — 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 ginkgo leaf has 2 lobes. How many lobes on 7 leaves?

1. 7 — ← Mova's choice · no support
2. 14 — ✓ the right answer · no support
3. 21 — 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 3 · ★ · right ✓

Count them: a bamboo shoot grows about 90 centimetres a day. About how much in 2 days?

1. 180 centimetres — ← Mova's choice · ✓ the right answer · no support
2. 90 centimetres — no support
3. 45 centimetres — no support
4. 900 centimetres — 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 Kung Fu Panda, Po the panda lives on noodles and dumplings. What do real giant pandas mostly eat?

1. Honey and berries — ← Mova's choice · score 6
2. Bamboo — ✓ the right answer · score 6
3. Noodles and dumplings — score 6
4. Fish and rice — score 6

Why: It took the question to ask what it is done to. It chose option 1 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 298, line 12: «Herbivores eat plants, carnivores eat meat and omnivores eat both: a cow is a herbivore, a cat a carnivore, and bears and people are omnivores, and teeth show…», reached through the remembered sentence the question matched. What matched: the same action «eat» (+5); the same doer «animal» (+1). The right option, 2, scored 6. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

«green tea n black tea, totally different plants, obviously» What is right?

1. Green tea is made from grass — ← Mova's choice · no support
2. Yes, black tea comes from a black tree — no support
3. Black tea is burnt green tea leaves from any plant — no support
4. Both come from one plant, only the drying is different — ✓ the right answer · no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

«that tree under the window stinks like sick, someone dropped something» What is a likely cause?

1. A broken water pipe — no support
2. The leaves are rotting in spring because the tree is dying — score 1
3. A sick fox — no support
4. Squashed seeds from a female ginkgo tree — ← 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, against 1 for the next best. Its support: lesson 2, line 17: «A strangler fig starts from a seed dropped high on a tree by a bird, sends roots down to the ground and wraps the host, which may die and rot away inside it.», reached through the option's own match among the sentences about the question's things. What matched: the same place «tree» (+4); the same thing acted on «seed» (+2). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Why might a bendy pole be safer than a stiff one in strong winds?

1. It is lighter so the wind cannot touch it — score 5
2. Stiff poles are always made of glass — ← Mova's choice · score 8
3. It bends and springs back instead of snapping — ✓ the right answer · score 3
4. Bendy poles stop the wind — score 3

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 8, against 5 for the next best. Its support: lesson 91, line 8: «The sand tiger shark looks fierce with its long jagged teeth, but it is slow and calm; the thin teeth are for gripping slippery fish, and it gulps air at the s…», reached through the cause of the sentence the question matched. What matched: the same thing acted on «pole» (+5); the same doer «pole» (+3). The right option, 3, scored 3. · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · wrong ✗

What would happen to most other crops in a flooded rice field?

1. They would float away and grow again further down the river — no support
2. They would turn into rice — no support
3. Their roots would get no air and they would die — ✓ the right answer · no support
4. They would grow faster than rice — ← Mova's choice · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, the only option with support. Its support: lesson 380, line 17: «Rice can grow in flooded fields because its stems have air channels carrying air to the roots, and the water drowns many weeds; the Hani people in Yunnan built…», 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» (+1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · right ✓

Why would flowering all at once help bamboo seeds survive hungry seed-eaters?

1. The seeds are poisonous only then — no support
2. Seed-eaters sleep that year — no support
3. There are too many seeds for the animals to eat them all — ← Mova's choice · ✓ the right answer · score 6
4. The animals do not see bamboo flowers, because they are green like the leaves — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 6, the only option with support. Its support: lesson 269, line 16: «The birds that survived the asteroid were probably small ground birds that ate seeds, because seeds lasted in the ground while forests died.», reached through the same lesson line as the sentence the question matched. What matched: the same action «eat» (+6); the same thing acted on «seeds» (+2). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · wrong ✗

«lotus seed growing after 1,300 years, that's fake news» What is right?

1. Lotus seeds are stones — no support
2. Seeds die after one year — ← Mova's choice · score 1
3. It was a new seed painted to look old by scientists who wanted to be famous — no support
4. It really happened; its hard waterproof coat kept it alive — ✓ the right answer · score 0

Why: It took the question to ask which statement is true. It chose option 2 with score 1, against 0 for the next best. Its support: lesson 59, line 16: «Some lotus seeds found in a dry lake bed in China sprouted after about 1300 years, protected by a very hard coat; seeds that can wait help a plant survive bad…», reached through the option's own match among the sentences about the question's things. What matched: the same property (+1). The right option, 4, scored 0. · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · wrong ✗

What could you make if you could copy a lotus leaf?

1. Cups that keep water hot all day and all night — ← Mova's choice · score 0
2. Paper that never tears, even when wet — no support
3. Leaves that turn into gold — score -2
4. Windows and paint that clean themselves in the rain — ✓ the right answer · no support

Why: It took the question to ask what it is done to. It chose option 1 with score 0, against -2 for the next best. Its support: lesson 380, line 3: «Pour water on a lotus leaf and it rolls off in silver balls, carrying the dirt with it, because the leaf is covered in tiny waxy bumps. A lotus seed about 1,30…», 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 «water» (+2). Against it: a different action (counts against) (-1); a different doer (counts against) (-4). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · wrong ✗

Why might roots survive when everything above ground burns?

1. Fire cannot reach the dark — no support
2. Roots grow back faster than flames — no support
3. Roots are made of stone — ← Mova's choice · score 8
4. The soil shields them from the heat — ✓ the right answer · no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 8, the only option with support. 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 «build» (+6); the same doer «steppe grass roots» (+2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the principal reason for which numerous cities plant exclusively male ginkgo trees.

1. Female trees are toxic to the touch — no support
2. Male trees attain greater height — no support
3. Male trees are more tolerant of drought and of the pollution of city streets — no support
4. Only female trees bear seeds whose fleshy coat emits an offensive odour — ← Mova's choice · ✓ the right answer · score 2

Why: It took the question to ask which statement is true. It chose option 4 with score 2, the only option with support. Its support: lesson 380, line 12: «Ginkgo seeds have a fleshy coat that smells like sick or rancid butter because of an acid in it; only female trees make seeds, so many cities plant only male t…», reached through a sentence linked to the one the question matched. What matched: the same doer «female trees» (+2); the same thing acted on «seeds» (+1). Against it: a different action (counts against) (-1). · 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 green tea and black tea.

1. Black tea is obtained from coffee plants — ← Mova's choice · score 3
2. They are derived from two unrelated species — no support
3. Green tea is a variety of grass — no support
4. Both are derived from one species, Camellia sinensis, and differ in processing — ✓ the right answer · 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 380, line 16: «Tea pickers pick just the bud and the top two leaves, and a Chinese legend says Emperor Shennong found tea when a leaf fell into his hot water.», reached through the remembered sentence the question matched. What matched: the same thing acted on «tea» (+3). The right option, 4, found no support in what it remembers. · 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 capacity of rice to grow in flooded fields?

1. It requires no air whatsoever — no support
2. It extracts oxygen from water by means of gills — no support
3. It floats upon the surface of the water, its roots suspended beneath — no support
4. Its stems contain air channels which convey air to the roots — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask who or what does it. It chose option 4 with score 9, the only option with support. Its support: lesson 380, line 17: «Rice can grow in flooded fields because its stems have air channels carrying air to the roots, and the water drowns many weeds; the Hani people in Yunnan built…», reached through the same lesson line as the sentence the question matched. What matched: the same action «carry» (+3); the same thing acted on «air» (+3); it fills the role the question asks for (+2); the same doer «air channels» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Ascertain the reason for which a stem of bamboo combines strength with lightness.

1. It is filled throughout with dense fibre — no support
2. It contains a reservoir of water — no support
3. It is reinforced by minerals of iron which it draws from the soil — no support
4. It is hollow and divided at intervals by solid joints — ← Mova's choice · ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 4 with score 3, the only option with support. Its support: lesson 380, line 6: «Bamboo stems are hollow with solid joints, which makes them strong and light, and bamboo bends without breaking and grows back quickly.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/380-china-s-plants-bamboo-ginkgo-lotus-tea-and-rice-paddies/