Poisonous plants to stay away from: berries, foxglove, yew and nightshade

Tests: 5 of 12 right · Exam: 2 of 4 right · Kind: plain · Understood: 13 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 392 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 · right ✓

«birds eat them berries all day, so they're fine for us» What is the best correction?

1. Birds do not react to the same poisons as people, so that proves nothing — ← Mova's choice · ✓ the right answer · score 5
2. Birds die from eating berries all the time — score 3
3. Right, but only if you have seen two birds eat them — score 5
4. Right, birds and people have the same stomachs, so they can eat the same things — score 2

Why: It took the question to ask which statement is true. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 392, line 17: «There are poisonous berries of every colour, and birds do not react to the same poisons as people, so neither colour nor watching birds can tell you a berry is…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same action «react» (+1); the same doer «birds» (+1). · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

Leo says apple seeds are deadly poison and he's dying because he ate two. What is true?

1. Swallowing a few by accident is harmless — ← Mova's choice · ✓ the right answer · score 7
2. Apple seeds are a kind of strong medicine — no support
3. He needs to go to hospital at once in an ambulance — no support
4. Apple seeds are safer to eat than the apple — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 7, the only option with support. Its support: lesson 392, line 16: «Apple seeds hold a chemical that can turn into poison, but swallowing a few by accident is harmless, because the hard seed coat usually passes through you whol…», reached through the same lesson line as the sentence the question matched. What matched: the same action «swallow» (+3); the same circumstance (+3); the same thing acted on «few» (+1). · the question and its options parsed, with trees and pragmatics

Test 3 · wrong ✗

In a fairy tale, a witch hides poison in a shiny red apple. Which real plant has bright red cups hiding a poisonous seed?

1. The yew — ✓ the right answer · no support
2. The rose — no support
3. The apple tree — ← Mova's choice · score 3
4. The old oak — score 1

Why: It took the question to ask what it is done to. It chose option 3 with score 3, against 1 for the next best. Its support: lesson 392, line 6: «The golden rule: never eat any wild berry, leaf, seed or mushroom unless a grown-up who really knows plants says it is safe, and tell a grown-up at once if som…», 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 «one» (+2). Against it: a different doer (counts against) (-2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

«ugh, potato's gone green on one side, whatever, I'll just boil it» What is the best advice?

1. Boiling turns green potatoes into sweet ones — ← Mova's choice · score 4
2. Green potatoes are the healthiest kind, so eat it all, skin and all — no support
3. Green means it is ripe and ready to eat — no support
4. Cut the green parts away or throw it out, green parts carry more poison — ✓ the right answer · score 4

Why: It took the question to ask which statement is true. It chose option 1 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 345, line 16: «Potatoes are cousins of tomatoes, peppers and aubergines; the small green fruits on a potato plant look like little tomatoes but are poisonous, and farmers gro…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «potatoes» (+3); the same action «grow» (+1). The right option, 4, scored 4. · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

A giant plant taller than your dad with huge white flower umbrellas grows near the playground. What should you do?

1. Hide inside its big leaves in the sun — no support
2. Do not touch it and tell a grown-up — ✓ the right answer · no support
3. Pick a big flower to show your friends — ← Mova's choice · score 5
4. Snap a stem to see what the sap looks like — score 5

Why: It took the question to ask what is done. It chose option 3 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 347, line 16: «Coffee plants first grew wild in Ethiopia; the story of a goatherd named Kaldi whose goats danced after eating the berries is a legend nobody can prove.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same action «prove» (+3). Against it: a different doer (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 6 · right ✓

What would happen if someone picked lily of the valley leaves thinking they were wild garlic and ate them?

1. They could be poisoned, because lily of the valley is poisonous — ← Mova's choice · ✓ the right answer · score -1
2. They would get stronger hearts from it — no support
3. They would just taste of garlic — no support
4. Nothing at all, because both of them are safe and tasty salad leaves — no support

Why: It took the question to ask what happens next. It chose option 1 with score -1, the only option with support. Its support: lesson 225, line 10: «Lilies are very poisonous to cats; even pollen licked off their fur can damage the kidneys.», reached through the option's own match among the sentences about the question's things. Against it: the same property (-1). · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

«my nan says foxglove is a heart medicine, so it's healthy innit» What is the best answer?

1. No, foxglove has nothing to do with the heart — no support
2. Doctors measure the chemicals carefully; the plant itself is poisonous — ← Mova's choice · ✓ the right answer · score 10
3. Yes, eating a few fresh foxglove flowers every day is good for your heart — no support
4. Yes, but only the purple ones are healthy — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 10, the only option with support. Its support: lesson 392, line 9: «Foxgloves, tall spikes of purple finger-shaped bells, are poisonous because chemicals in them change how the heart beats; the same chemicals, carefully measure…», reached through the same lesson line as the sentence the question matched. What matched: the same action «measure» (+5); it fills the role the question asks for (+3); the same thing acted on «same chemicals» (+2). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

Count them: a foxglove spike carries 24 bells and a second one carries 18. How many bells are there to look at but never put in your mouth?

1. 36 — ← Mova's choice · no support
2. 32 — no support
3. 44 — no support
4. 42 — ✓ 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 9 · right ✓

In a cartoon, a bear stuffs its mouth with every berry in the forest and is fine. What is wrong for a child?

1. Only cartoon berries are poisonous — score 3
2. Nothing is wrong, because all the berries in a forest are safe if a bear eats them first — score 3
3. Bears are the only animals that berries can harm — score 5
4. Many wild berries are poisonous for people, so never eat them without a knowing grown-up — ← 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 5 for the next best. Its support: lesson 255, line 8: «Many berries are poisonous to people even though birds can eat them, because birds' bodies handle some poisons differently.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same doer «many berries» (+1); the same property (+1); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

«white berries are always bad, others are fine, simple» Is this a safe rule?

1. Yes, it is the rule doctors use — no support
2. No, there are poisonous berries of every colour — ✓ the right answer · no support
3. Yes, red and black berries are always safe to eat — ← Mova's choice · score 3
4. Yes, because only the white berries are poisonous — score 3

Why: It took the question to ask which statement is true. It chose option 3 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 392, line 17: «There are poisonous berries of every colour, and birds do not react to the same poisons as people, so neither colour nor watching birds can tell you a berry is…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «berry» (+1); the same property (+1); the same light verb (be, have, do, get, go) (+1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 11 · wrong ✗

Why are poisonous berries that look sweet so dangerous for toddlers?

1. Toddlers put pretty things in their mouths and are small, so less poison harms them — ✓ the right answer · no support
2. Toddlers are protected by milk — no support
3. Toddlers can always taste poison and spit it out — no support
4. Berries are only poisonous to grown-ups and never to small children with tiny tummies — ← Mova's choice · score 5

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 5, the only option with support. Its support: lesson 392, line 17: «There are poisonous berries of every colour, and birds do not react to the same poisons as people, so neither colour nor watching birds can tell you a berry is…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «poisonous berries» (+3); the same property (+1); the same light verb (be, have, do, get, go) (+1). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 12 · wrong ✗

Your mum stores onions and daffodil bulbs in the same box in the shed. Why is that a bad idea?

1. The bulbs make the onions grow yellow flowers in the box — score 4
2. The onions make the bulbs rot at once — ← Mova's choice · score 5
3. Daffodils steal the onion smell — no support
4. Someone could mix them up and cook a poisonous bulb — ✓ the right answer · score 3

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 5, against 4 for the next best. Its support: lesson 331, line 9: «Onions, garlic, leeks and chives damage red blood cells in cats and dogs, and cooked, dried or powdered onion is still dangerous; onion powder hides in gravy,…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «onions» (+3); the same action «cook» (+2). The right option, 4, 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 rule concerning the consumption of wild berries, leaves and seeds.

1. Any berry consumed by birds may be presumed safe for human beings — ← Mova's choice · no support
2. None shall be consumed unless a competent adult with knowledge of plants has confirmed that it is safe — ✓ the right answer · no support
3. A small quantity may be tasted in order to ascertain its safety — no support
4. Berries of a red colour may be consumed without restriction, red being a reliable indication of safety — 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 2 · formal language · wrong ✗

Identify the principal reason for which numerous plants contain poisonous substances.

1. To preserve the colour of their flowers — ← Mova's choice · no support
2. To accelerate the growth of their stems — no support
3. To deter animals from consuming their leaves and seeds — ✓ the right answer · no support
4. To attract animals to consume them in the greatest possible quantity — 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 ✓

Which of the following statements most accurately characterises the accidental swallowing of a small number of apple seeds?

1. It is harmless, as the hard seed coat ordinarily passes through the body intact — ← Mova's choice · ✓ the right answer · score 6
2. It confers protection against all other poisons — score 5
3. It invariably results in grave illness requiring immediate admission to hospital — no support
4. It results in the germination of a tree within the stomach — no support

Why: It took the question to ask who or what does it. It chose option 1 with score 6, against 5 for the next best. Its support: lesson 392, line 16: «Apple seeds hold a chemical that can turn into poison, but swallowing a few by accident is harmless, because the hard seed coat usually passes through you whol…», reached through the same lesson line as the sentence the question matched. What matched: the same action «pass» (+3); it fills the role the question asks for (+2); the same doer «hard seed coat» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Ascertain the reason for which potatoes are customarily stored in darkness.

1. Darkness causes them to double in size — no support
2. Exposure to light causes them to turn green and to produce a greater quantity of poison — ← Mova's choice · ✓ the right answer · score 3
3. Exposure to light renders them excessively sweet and unfit for the preparation of any meal — no support
4. Darkness prevents their consumption by birds — score 3

Why: It took the question to ask which statement is true. It chose option 2 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 345, line 15: «A potato turned green in the light has also made a bitter natural poison called solanine, so green parts and sprouts should be cut away and potatoes stored in…», reached through the same lesson line as the sentence the question matched. What matched: the same action «turn» (+3); the same property (+1). Against it: the same doer «potato» (-1). · the question and its options parsed, with trees and pragmatics

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