Plants deeper: poisonous and stinging plants and staying safe

Tests: 7 of 11 right · Exam: 1 of 4 right · Kind: plain · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 255 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 ✓

In Snow White the queen gives her a poisoned apple that sends her to sleep. What is true about real apples?

1. Apples are safe; only many crushed seeds could ever make a poison — ← Mova's choice · ✓ the right answer · score 5
2. Red apples are poisonous and green ones safe — no support
3. All apples are a little bit poisonous, so you should eat only one a week — no support
4. Apple peel is the poisonous part — 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 255, line 5: «The poisoned apple in Snow White is a fairy tale; a real apple is safe, and the few pips you swallow by accident pass straight through.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «real apple» (+2); the same property (+2); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

«my mate says chillies actually burn ur mouth like fire, it's real heat» What is right?

1. Yes, that is why chillies are red — no support
2. No, chillies are cold inside — no support
3. Yes, chillies really heat your mouth up to about 100 degrees, like a kettle — score -2
4. No, capsaicin only tricks the pain sensors into feeling heat — ← Mova's choice · ✓ the right answer · score 11

Why: It took the question to ask which statement is true. It chose option 4 with score 11, against -2 for the next best. Its support: lesson 255, line 16: «Chillies contain capsaicin, which tricks pain sensors into feeling heat; mammals avoid chillies, but birds cannot feel the burn and spread the seeds.», reached through the option's own match among the sentences about the question's things. What matched: the same action «trick» (+4); the same place «feeling heat» (+4); the same doer «capsaicin» (+2); the same thing acted on «pain sensors» (+1). · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

«touched a nettle, ffs it hurts, am i gonna die» What is right?

1. Yes, unless you drink a big glass of cold milk at once, straight away — no support
2. No, but the leg will stay red for ever — no support
3. No, the sting hurts and itches but wears off by itself — ← Mova's choice · ✓ the right answer · score 6
4. Yes, nettle stings are deadly within an hour — 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 255, line 6: «Nettle hairs are tiny glass-like needles that break off and inject an irritating mix into the skin, which protects the leaves from grazing animals; the sting h…», reached through a sentence linked to the one the question matched. What matched: the same action «itch» (+3); the same doer «sting» (+3). · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

A family burns a pile of poison ivy in the garden. Why is that a bad idea?

1. The smoke carries the oil and is dangerous for the lungs — ✓ the right answer · no support
2. Burning poison ivy makes a loud explosion — no support
3. The fire will spread the poison ivy seeds everywhere in the wind — no support
4. It makes the poison ivy grow back faster — ← Mova's choice · score 3

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 3, the only option with support. Its support: lesson 242, line 4: «In the middle of the pond the family builds a lodge of sticks and mud with an underwater door, so wolves and bears cannot get in.», reached through the option's own match among the sentences about the question's things. What matched: the same action «build» (+3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

«birds are eating them berries so they're fine for us, right» What is right?

1. No, birds only eat poisonous berries — ← Mova's choice · score 7
2. Yes, if a bird eats it, it is safe for people to eat too — score 3
3. No, birds can eat some berries that are poisonous to people — ✓ the right answer · score 7
4. Yes, but only the red ones — no support

Why: It took the question to ask which statement is true. 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 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 action «eat» (+4); the same doer «birds» (+2); the same thing acted on «berries» (+1). The right option, 3, scored 7. · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

How can the same foxglove be both a poison and a medicine?

1. Only doctors are safe from its poison — ← Mova's choice · no support
2. The amount decides: a careful dose helps, too much harms — ✓ the right answer · no support
3. The flowers are medicine and the stalks poison — no support
4. It is poison in summer and medicine in winter — 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 7 · right ✓

What would happen if a child touched giant hogweed sap and then played in the sun?

1. The skin could burn and blister badly — ← Mova's choice · ✓ the right answer · no support
2. The child would fall asleep — no support
3. The skin would go green for a day — no support
4. Nothing, the sap only works in the dark — 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 ✗

Count them: on a hike Sam spots 4 poison ivy leaves, each one «leaves of three». How many leaflets is that?

1. 16 — ← Mova's choice · no support
2. 12 — ✓ the right answer · no support
3. 3 — no support
4. 7 — 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 ✓

Why would a desert cactus need to guard itself?

1. Cacti are afraid of the dark and the spines keep them company — no support
2. Its stored water would tempt thirsty animals — ← Mova's choice · ✓ the right answer · score 3
3. Desert insects eat only spines — no support
4. It needs spines to drink the rain — 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 182, line 14: «A cactus stores water in its stem and swells after rain; its spines are changed leaves that shade it and stop animals eating it, and a big saguaro can hold ove…», reached through the option's own match among the sentences about the question's things. What matched: the same action «store» (+3). · the question and its options parsed, with trees and pragmatics

Test 10 · right ✓

Grandma makes rhubarb crumble. Is it safe?

1. Yes, if she uses only the stalks and not the leaves — ← Mova's choice · ✓ the right answer · no support
2. No, rhubarb is poisonous all over, stalks and leaves alike — no support
3. No, rhubarb is only safe raw — no support
4. Yes, the leaves are the tastiest part — 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 · right ✓

Why might a chilli plant «want» birds but not mammals to eat its fruit?

1. Birds give the plant water in return — score 3
2. Mammals cannot reach the fruit anyway — score 0
3. Birds are smaller, so they eat less — no support
4. Birds feel no burn and spread the seeds whole — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask which statement is true. It chose option 4 with score 5, against 3 for the next best. Its support: lesson 155, line 7: «In the flooded forest fish like the tambaqui eat fallen fruit and nuts and spread the seeds, doing the job birds do on land.», reached through the same lesson line as the sentence the question matched. What matched: the same action «spread» (+3); the same thing acted on «seeds» (+3). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the principal reason for which a person ought not to consume berries found growing wild.

1. Wild berries contain no nourishment whatsoever — no support
2. Berries become poisonous upon being touched — score 4
3. Many such berries are poisonous to human beings, notwithstanding their consumption by birds — ← Mova's choice · ✓ the right answer · score 5
4. All wild berries are invariably poisonous — score 5

Why: It took the question to ask which statement is true. 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 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 doer «many berries» (+2); the same property (+2); the same light verb (be, have, do, get, go) (+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 the sensation produced by the consumption of chillies.

1. The tongue is chemically burnt and permanently damaged — ← Mova's choice · no support
2. The temperature of the mouth is raised substantially, often to the point of scalding — no support
3. The substance capsaicin stimulates pain receptors so as to produce a sensation of heat — ✓ the right answer · no support
4. The sensation arises from the colour of the fruit — 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 relationship between the foxglove and the medicine digitalis?

1. Digitalis is a remedy against the sting of nettles — score -2
2. The foxglove is entirely harmless in any quantity — ← Mova's choice · score 2
3. The foxglove was discovered to be poisonous only in recent years, after it had long been eaten as a salad — no support
4. A substance poisonous in large quantity is beneficial to the heart in a carefully regulated dose — ✓ the right answer · no support

Why: It took the question to ask who or what does it. It chose option 2 with score 2, against -2 for the next best. Its support: lesson 255, line 13: «Foxgloves are poisonous, but the medicine digitalis made from them has helped heart patients since the doctor William Withering wrote about it in 1785.», reached through the same lesson line as the sentence the question matched. What matched: the same light verb (be, have, do, get, go) (+1); it fills the role the question asks for (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain which part of the rhubarb plant is unsuitable for human consumption.

1. The stalks, whether cooked or raw, at any season — ← Mova's choice · no support
2. The roots, by reason of their sweetness, which attracts children — no support
3. No part of the plant whatsoever — no support
4. The leaves, by reason of their high content of oxalic acid — ✓ 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/255-plants-deeper-poisonous-and-stinging-plants-and-staying-safe/