Fungi: mushrooms, mould and yeast

Tests: 8 of 11 right · Exam: 1 of 4 right · Kind: plain · Understood: 11 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 62 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 ✗

My sister says mushrooms are just plants without leaves. Right?

1. Yes, they are baby trees — no support
2. No, fungi are their own kingdom and can't make food from sunlight — ✓ the right answer · score 1
3. No, they are animals that stay still — ← Mova's choice · score 5
4. Yes, they are plants that lost their leaves long ago and now grow in the dark — 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 62, line 1: «A mushroom is not a plant and not an animal: it belongs to a third great kingdom of life, the fungi, which also includes moulds and the yeast in bread.», reached through the remembered sentence the question matched. What matched: the same thing acted on «plant» (+5); the same doer «mushroom» (+2); the same light verb (be, have, do, get, go) (+2). Against it: one says «not», the other does not (counts against) (-4). The right option, 2, scored 1. · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

In a cartoon, the hero eats a red toadstool with white spots and grows huge. What is the truth?

1. It only makes you sleepy — no support
2. The fly agaric is poisonous and must never be eaten — ← Mova's choice · ✓ the right answer · score 9
3. It is safe when cooked for long enough — no support
4. It is safe and gives you strength, like spinach — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 9, the only option with support. Its support: lesson 62, line 9: «The red toadstool with white spots, the fly agaric, is poisonous, and the death cap, which looks plain and harmless, can kill; nobody should ever eat a wild mu…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «red toadstool» (+5); the same property (+2); the same light verb (be, have, do, get, go) (+2). · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

My grandad picked some plain white mushrooms in the field, they look fine innit. Safe?

1. Yes, white ones are always safe — no support
2. Not unless an expert checks them, as deadly ones can look plain — ← Mova's choice · ✓ the right answer · score 1
3. Yes, if they smell nice — no support
4. Yes, the poisonous ones are always brightly coloured to warn you off — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 62, line 9: «The red toadstool with white spots, the fly agaric, is poisonous, and the death cap, which looks plain and harmless, can kill; nobody should ever eat a wild mu…», reached through the option's own match among the sentences about the question's things. What matched: the same action «check» (+2); the same doer «expert» (+1); the same thing acted on «mushroom» (+1). Against it: one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

What would happen to a forest if every fungus disappeared?

1. The forest would fill with mushrooms — no support
2. Nothing would change at all — no support
3. Dead wood and leaves would pile up and many trees would grow badly — ✓ the right answer · no support
4. Trees would grow twice as fast without any fungi stealing their sugar — ← Mova's choice · score 2

Why: It took the question to ask what happens next. It chose option 4 with score 2, the only option with support. Its support: lesson 62, line 15: «A honey fungus in the Blue Mountains of Oregon, USA, spreads underground over about 9 square kilometres and is thought to be thousands of years old, perhaps th…», reached through what followed the sentence the question matched. What matched: the same doer «honey fungus» (+4). Against it: a different action (counts against) (-2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 5 · right ✓

You leave bread dough in the fridge instead of a warm place. What will happen?

1. It will never change at all — no support
2. It will rise more slowly, as the yeast works slowly in the cold — ← Mova's choice · ✓ the right answer · score 4
3. It will rise faster than ever, because yeast loves the cold best of all — score 4
4. It will turn into mould at once — score 4

Why: It took the question to ask what happens next. It chose option 2 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 62, line 12: «Yeast is a fungus made of single tiny cells; in bread dough it eats sugar and gives off carbon dioxide gas, whose bubbles make the dough rise; yeast works fast…», reached through the option's own match among the sentences about the question's things. What matched: the same action «rise» (+2); the same doer «dough» (+2). · the question and its options parsed, with trees and pragmatics

Test 6 · right ✓

Fleming only noticed the mould because he came back from holiday to a messy dish. What does that teach?

1. Careful scientists look at surprises instead of throwing them away — ← Mova's choice · ✓ the right answer · no support
2. Mould only grows when people are away — no support
3. Holidays make bacteria die — no support
4. Messy labs always find medicines, so you should never clean up at all — 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 ✓

ew, mate cut the green bit off the bread and ate the rest. fine yeah?

1. Yes, mould only ever lives on the outside, so cutting it off is fine — no support
2. Yes, toasting it removes all mould — no support
3. Better not, the mould's threads can reach far inside the bread — ← Mova's choice · ✓ the right answer · score 6
4. Yes, mould is just a vitamin — 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 62, line 10: «Mould is a fungus too; on an old orange or a slice of bread its threads grow far inside the food and the green or blue fuzz on top is made of spores.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «threads» (+5); the same property (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 8 · right ✓

In a video game a glowing mushroom is a magic potion. Why do real ones glow?

1. They are full of magic — no support
2. A chemical reaction inside makes light, called bioluminescence — ← Mova's choice · ✓ the right answer · score 4
3. They are covered in lightning bugs — no support
4. They store up the sunlight from the day and let it out slowly at night — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, the only option with support. Its support: lesson 62, line 16: «Some fungi glow in the dark with a soft green light, called bioluminescence, made by a chemical reaction inside them, like the ghost fungus of Australia.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «soft green light» (+3); the same action «call» (+1). · the question and its options parsed, with trees and pragmatics

Test 9 · right ✓

After swimming, Leo's toes are itchy and flaky. What is the best advice?

1. Run more to toughen the skin — no support
2. Keep wet socks on to soothe it — no support
3. Put your feet in salty water every night before bed for a week — no support
4. Dry between the toes well and wear flip-flops at the pool — ← Mova's choice · ✓ the right answer · score 4

Why: It took the question to ask what it is done to. It chose option 4 with score 4, the only option with support. Its support: lesson 42, line 10: «Their eyes, ears and nostrils sit high on the head, like a hippo's, so a capybara can hide almost fully under water and still see, hear and breathe; it swims w…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same property (+1); a different doer (counts against) (+1). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

Why does a fairy ring get bigger every year?

1. More rain falls on the lawn — ← Mova's choice · no support
2. Mushrooms walk outwards at night — no support
3. Fairies dance in a bigger ring every year — no support
4. The fungus threads keep growing outwards — ✓ 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 11 · right ✓

A puffball the size of a football bursts. Why does it make so many spores?

1. To make clouds and rain — no support
2. Every spore always grows into a new puffball — no support
3. To feed birds that eat dust — no support
4. Most spores land in bad places, so only a few grow into new fungi — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 9, the only option with support. Its support: lesson 62, line 8: «Fungi spread by spores, tiny specks like dust; a giant puffball can hold trillions of them, and a raindrop or a foot makes them puff out like smoke; most spore…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «few» (+3); the same place «new fungi» (+3); its «because» matches the remembered cause (+2); the same action «grow» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the organisms known as fungi?

1. They are microscopic animals — no support
2. They manufacture food from sunlight by means of a green pigment in the cap — ← Mova's choice · score -1
3. They constitute a separate kingdom and obtain food by absorption — ✓ the right answer · no support
4. They are green plants deficient in leaves — no support

Why: It took the question to ask who or what does it. It chose option 2 with score -1, the only option with support. Its support: lesson 62, line 6: «Fungi are their own kingdom of life, separate from plants and animals; they have no green chlorophyll and cannot make food from sunlight, and they are in fact…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «food» (+1); the same place «sunlight» (+1). Against it: a different doer (counts against) (-1); a different action (counts against) (-2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Identify the principal function of yeast in the leavening of bread.

1. The neutralisation of salt — ← Mova's choice · no support
2. The absorption of water by flour — no support
3. The production of carbon dioxide gas from sugar — ✓ the right answer · no support
4. The hardening of the crust in the oven — 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

Exam question 3 · formal language · wrong ✗

It is given that an individual has collected wild mushrooms of unknown kind. Select the course of action consistent with established safety principles.

1. They may be consumed if pleasant in odour — ← Mova's choice · no support
2. They may be consumed if cooked thoroughly at a high temperature — no support
3. They may be consumed if white in colour — no support
4. They should not be consumed unless identified by an expert — ✓ 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

Exam question 4 · formal language · right ✓

Ascertain the substance discovered by Alexander Fleming in 1928.

1. Yeast, employed in baking — no support
2. A vaccine against smallpox — no support
3. Insulin, produced by the pancreas — no support
4. Penicillin, produced by a mould — ← 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 62, line 11: «In 1928 Alexander Fleming came back from a holiday to a messy lab and, instead of throwing out a spoiled dish, looked closely and saw that a mould called Penic…», reached through the same lesson line as the sentence the question matched. What matched: the same action «make» (+4); the same thing acted on «penicillin» (+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/62-fungi-mushrooms-mould-and-yeast/