Plants that sting, scratch and poison

Tests: 11 of 18 right · Exam: 2 of 4 right · Kind: ★ · Understood: 16 of 22 · Run: 2026-10-18, commit f3c23ea72

Lesson 237 of the everyday 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 ✓

A boy in Kent has a red, stinging rash after running through a weedy field in shorts. What probably stung him?

1. Stinging nettles — ← Mova's choice · ✓ the right answer · no support
2. Dandelions — no support
3. Long dry grass — no support
4. Daisies — 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 ✗

A friend in Virginia wants to make a necklace from a vine with three shiny leaves on each stem. What do you say?

1. Only touch it if the leaves are red — no support
2. Wash it first and then it is fine — ← Mova's choice · score 3
3. Let it be; it may be poison ivy — ✓ the right answer · no support
4. Go ahead, three-leaf plants are always safe — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 3, the only option with support. Its support: lesson 229, line 12: «Wash fruit and vegetables from the garden first, because soil, droppings and sprays may be on them.», reached through the option's own match among the sentences about the question's things. What matched: the same action «wash» (+2); the same property (+2). Against it: a different thing acted on (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · right ✓

Which is true about wild mushrooms?

1. Even experts can mistake deadly ones for safe ones — ← Mova's choice · ✓ the right answer · no support
2. Cooking for long enough makes any wild mushroom safe — no support
3. Mushrooms that grow on lawns are always safe to eat — no support
4. Mushrooms that smell nice are always safe — 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 · ★ · right ✓

Why do grown-ups keep a piece of the plant a child has eaten?

1. It can be planted later to grow a new one — score 3
2. It tells the doctor or poison control what the poison was — ← Mova's choice · ✓ the right answer · score 6
3. It is needed so the child can eat it again — score 6
4. It proves to everyone that the child was being naughty — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 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 202, line 4: «Example: a rumour spreads in a school in Phoenix that a scary character is coming to school. Such viral scares are usually hoaxes. A frightened child tells an…», reached through the option's own match among the sentences about the question's things. What matched: the same action «tell» (+4); the same doer «frightened child» (+2). · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

Why pick blackberries above dog height?

1. Dogs bite people picking low berries — ← Mova's choice · score 6
2. Low berries are a different poisonous kind — no support
3. The low ones may have been weed on by dogs — ✓ the right answer · score 5
4. The high ones are always the sweetest — no support

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 6, against 5 for the next best. Its support: lesson 237, line 13: «Pick only berries a grown-up has identified, above dog height (low ones may have been weed on by dogs) and away from roads, and wash them, because many berries…», reached through the option's own match among the sentences about the question's things. What matched: the same action «pick» (+4); the same thing acted on «berries» (+2). The right option, 3, scored 5. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

Which plant is poisonous to eat?

1. Foxglove — ← Mova's choice · ✓ the right answer · score 4
2. Apple — no support
3. Carrot — no support
4. Strawberry — no support

Why: It took the question to ask who or what does it. It chose option 1 with score 4, the only option with support. Its support: lesson 229, line 11: «Never eat a berry, seed or leaf unless a grown-up says it is safe, because plants like yew, foxglove and laburnum are poisonous.», reached through the option's own match among the sentences about the question's things. What matched: the same property (+2); the same light verb (be, have, do, get, go) (+1); it fills the role the question asks for (+1). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Your dad is clearing a garden in Ohio and wants to burn a pile of vines. Why should he check for poison ivy first?

1. It makes the fire spread much faster across the garden — ← Mova's choice · no support
2. Its smoke carries the oil into the lungs — ✓ the right answer · no support
3. Its ash kills the grass around the fire for many years — no support
4. Burning it is against all the fire rules — 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 · ★ · wrong ✗

A girl in Arizona wants to stroke a fuzzy-looking cactus. What is wise?

1. Wear thin socks on her hands first — no support
2. Stroke it gently in the direction of the spines — score 1
3. Touch it, because fuzzy cacti have no spines at all — ← Mova's choice · score 3
4. Just look; even fuzzy cacti have spines that stick in skin — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 3, against 1 for the next best. Its support: lesson 237, line 18: «Look at cacti but do not touch them, because their spines go into skin and are hard to get out.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «cacti» (+3); the same action «touch» (+2). Against it: one says «not», the other does not (counts against) (-2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

plant w 3 shiny leaves on the trail, can i pick it

1. No, leaves of three, let it be — ✓ the right answer · no support
2. Only the small ones — no support
3. Yes, if you wash your hands — ← Mova's choice · score 8
4. Yes, three leaves means it's clover — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 237, line 15: «Never pick or eat wild mushrooms, and wash your hands if you touched them, because deadly ones look like edible ones.», reached through the same lesson line as the sentence the question matched. What matched: the same action «wash» (+5); the same thing acted on «hands» (+3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

dad wants to burn the poison ivy we pulled up

1. Yes, burning kills it safely — no support
2. Yes, if he stands back a bit from the smoke — no support
3. Only on a windy day so the smoke blows away — no support
4. No, the smoke carries its oil into the lungs — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, the only option with support. Its support: lesson 237, line 11: «Never burn poison ivy, because the smoke carries its oil into the lungs.», reached through a sentence linked to the one the question matched. What matched: the same doer «smoke» (+2); the same thing acted on «oil» (+2); the same place «lungs» (+2); the same action «carry» (+1). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

lil sis ate a berry off the bush!!

1. Wait n see if she's ok first — no support
2. Give her lots of sweets to take the taste away — no support
3. Tell a grown-up now and keep a berry to show — ← Mova's choice · ✓ the right answer · score 8
4. Make her eat another one to check — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 237, line 14: «If a child eats an unknown berry or plant, tell a grown-up at once and keep a sample, so poison control or a doctor can help.», reached through the same lesson line as the sentence the question matched. What matched: the same action «tell» (+5); the same thing acted on «grown» (+3). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · right ✓

found mushrooms in the garden, look like the ones from the shop

1. Don't eat them, deadly ones look like safe ones — ← Mova's choice · ✓ the right answer · score 5
2. Eat one, if it tastes nice it's fine — no support
3. Fry them, cooking makes any mushroom safe to eat — no support
4. Feed one to the dog first n see if he's ok — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 5, the only option with support. Its support: lesson 237, line 15: «Never pick or eat wild mushrooms, and wash your hands if you touched them, because deadly ones look like edible ones.», reached through the same lesson line as the sentence the question matched. What matched: the same action «eat» (+5); the same thing acted on «wild mushrooms» (+3). Against it: one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Test 13 · ★ · wrong ✗

these purple flowers smell nice, can i eat one

1. Yes, if it's pretty n smells nice — ← Mova's choice · no support
2. No, many flowers are poisonous — ✓ the right answer · no support
3. Only the petals, they're fine — no support
4. Yes, flowers are safe — 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 14 · ★ · right ✓

Why should you never burn poison ivy?

1. It makes far too much ash for the garden to cope with — no support
2. Burning makes it grow back stronger — score 0
3. The smoke carries the oil into your lungs — ← Mova's choice · ✓ the right answer · score 18
4. The smoke only smells bad, nothing more — score 5

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 18, against 5 for the next best. Its support: lesson 237, line 11: «Never burn poison ivy, because the smoke carries its oil into the lungs.», reached through the cause of the sentence the question matched. What matched: the same action «carry» (+6); the same thing acted on «oil» (+5); the same place «lungs» (+4); the same doer «smoke» (+3). · the question and its options parsed, with trees and pragmatics

Test 15 · ★ · right ✓

touched a weird plant, my hand's red and itchy

1. Ignore it, it's only a rash, it'll go — no support
2. Rub it off on your face — no support
3. Scratch it hard until it stops itching — no support
4. Wash it with soap and water and tell an adult — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, the only option with support. Its support: lesson 85, line 12: «In the USA and Canada, a rash after touching a plant may be poison ivy, so wash with soap and water and tell an adult.», reached through the same lesson line as the sentence the question matched. What matched: the same action «wash» (+5); the same circumstance (+4). · the question and its options parsed, with trees and pragmatics

Test 16 · ★ · right ✓

did u hear some guy burnt a pile of poison ivy in his yard and the smoke made him really sick? real lesson?

1. Burning poison ivy is the safest way to get rid of it for good — score 3
2. Smoke cleans the oil off the plant — score 2
3. Never burn poison ivy; its oil gets into smoke and lungs — ← Mova's choice · ✓ the right answer · score 5
4. Only touching it is a problem, not smoke — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, against 3 for the next best. Its support: lesson 237, line 11: «Never burn poison ivy, because the smoke carries its oil into the lungs.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «poison ivy» (+3); the same action «burn» (+2). · the question and its options parsed, with trees and pragmatics

Test 17 · ★ · wrong ✗

apparently a kid touched giant hogweed and his whole arm melted off in the sun. what's probably blown up?

1. That sun makes the burns worse — no support
2. That hogweed is a tall plant — ← Mova's choice · score 8
3. That hogweed has white flowers — no support
4. Melted off; but its sap really burns skin in sunlight — ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 2 with score 8, against 3 for the next best. Its support: lesson 237, line 2: «Giant hogweed is a very tall plant with huge white flower umbrellas, often beside rivers. Its sap makes skin burn badly in sunlight, so never touch it.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «giant hogweed» (+3); the same thing acted on «tall plant» (+3); the same light verb (be, have, do, get, go) (+2). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics

Test 18 · ★ · right ✓

my mate says he ate conkers once and was fine so they're safe. true?

1. Yes, the shiny ones are fine — no support
2. Yes, if they're roasted first — no support
3. No, conkers are poisonous; never eat them — ← Mova's choice · ✓ the right answer · score 6
4. Yes, they're just big nuts like chestnuts — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 237, line 19: «Collect conkers, acorns and pine cones for crafts, but never eat conkers or acorns, because they are poisonous.», reached through a sentence linked to the one the question matched. What matched: the same property (+3); the same doer «conkers» (+2); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the purpose of the rhyme «Leaves of three, let it be».

1. To recognise those mushrooms that are safe for consumption — no support
2. To count the petals of daffodils — no support
3. To identify those wild berries which may be eaten safely — score 7
4. To assist in the avoidance of poison ivy and poison oak — ← 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, against 7 for the next best. Its support: lesson 237, line 9: ««Leaves of three, let it be» helps you avoid poison ivy and poison oak, whose oil causes an itchy, blistering rash.», reached through the same lesson line as the sentence the question matched. What matched: the same action «avoid» (+5); the same thing acted on «poison ivy» (+3). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Which of the following constitutes the appropriate action where a child has eaten an unknown berry?

1. The matter is ignored altogether if the berry was small — ← Mova's choice · score 7
2. The child is given a glass of milk and watched closely — no support
3. An adult is told at once and a sample retained — ✓ the right answer · no support
4. The child is made to run about so as to aid digestion — score 7

Why: It took the question to ask who or what does it. 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 229, line 5: «A girl in Oregon ate bright red berries in a forest because they looked like raspberries; she was sick for hours and had to go to hospital.», reached through a sentence linked to the one the question matched. What matched: it fills the role the question asks for (+4); the same doer «berries» (+3). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Select the response consistent with the established facts concerning wild mushrooms.

1. Mushrooms that smell pleasant are safe — ← Mova's choice · no support
2. Cooking renders all mushrooms safe, whatever their kind or colour — no support
3. Deadly kinds resemble edible kinds and none is to be eaten — ✓ the right answer · no support
4. White mushrooms are invariably safe — 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 which of the following plants is poisonous if eaten.

1. Foxglove — ← Mova's choice · ✓ the right answer · no support
2. Lettuce — no support
3. Garden pea — no support
4. Carrot — 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

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