Fungi, bacteria and tiny living things

Tests: 8 of 13 right · Exam: 3 of 4 right · Kind: ★ · Understood: 11 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 77 of the world 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 ✓

Why does keeping bread in the freezer stop mould?

1. The cold slows the fungus almost to a stop — ← Mova's choice · ✓ the right answer · no support
2. Mould only grows in sunlight — no support
3. The cold kills all the flour so there is nothing left to eat — no support
4. Freezers make bread poisonous — 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 · ★ · right ✓

Which is true about a mushroom you see in a wood?

1. It grew from a seed dropped by a bird — score 4
2. It is a kind of green plant — no support
3. It is only a small part of a much bigger fungus — ← Mova's choice · ✓ the right answer · score 7
4. It is the whole living fungus — score 5

Why: It took the question to ask which statement is true. It chose option 3 with score 7, against 5 for the next best. Its support: lesson 77, line 8: «A mushroom is the part of a fungus that makes spores.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «mushroom» (+3); the same circumstance (+2); the same thing acted on «part» (+1); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · wrong ✗

A cook forgets to add yeast to bread dough. What will happen?

1. The bread will taste sweeter — ← Mova's choice · no support
2. The bread will stay flat — ✓ the right answer · no support
3. The bread will turn green — no support
4. The bread will rise even more — 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 ✗

What would happen in a forest if there were no fungi or bacteria?

1. Nothing at all would change — ← Mova's choice · no support
2. Dead leaves and logs would pile up and not rot — ✓ the right answer · no support
3. Trees would grow twice as fast with nothing to eat their leaves — no support
4. The soil would become richer — 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 5 · ★ · right ✓

Why do we wash our hands even though most bacteria are harmless?

1. Bacteria make our hands heavy — score 3
2. A few bacteria can make us ill — ← Mova's choice · ✓ the right answer · score 4
3. Washing feeds the good bacteria — no support
4. All bacteria are dangerous — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, against 3 for the next best. Its support: lesson 37, line 1: «Germs are living things too small to see without a microscope. Most bacteria are harmless or even helpful, but some bacteria and viruses get into the body and…», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2); the same doer «bacteria» (+1); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

Which living thing is the smallest?

1. A mushroom — no support
2. A grain of mould you can see — no support
3. A bacterium — ← Mova's choice · ✓ the right answer · score 7
4. An ant — no support

Why: It took the question to ask who or what does it. It chose option 3 with score 7, the only option with support. Its support: lesson 26, line 13: «Fungi, such as mushrooms and moulds, bacteria, which are living things far too small to see, and earthworms are decomposers.», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+4); the same doer «bacteria» (+3). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · right ✓

A pupil says mushrooms are plants because they grow from the ground. What is the mistake?

1. Mushrooms are really animals — no support
2. Mushrooms do not grow from the ground — score 3
3. Plants never grow from the ground — score 3
4. Fungi cannot make their own food like plants — ← Mova's choice · ✓ the right answer · score 11

Why: It took the question to ask what it is done to. It chose option 4 with score 11, against 3 for the next best. Its support: lesson 22, line 14: «Plants cannot make food in the dark.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+4); it fills the role the question asks for (+3); the same thing acted on «food» (+2); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · wrong ✗

How is a spore like a seed?

1. Both are big enough to hold in your hand — ← Mova's choice · no support
2. Both can grow into a new living thing — ✓ the right answer · no support
3. Both are made by bacteria living in the soil — no support
4. Both are made inside a flower and need bees — 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 ✓

Milk left out for days turns sour. What caused it?

1. Light changing its colour — no support
2. Bacteria growing in the milk — ← Mova's choice · ✓ the right answer · score 11
3. The cup making it sour — score 6
4. The milk turning into water — score 5

Why: It took the question to ask who or what does it. It chose option 2 with score 11, against 6 for the next best. Its support: lesson 77, line 15: «Milk left out for days goes sour because bacteria grow in it.», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+4); the same doer «bacteria» (+3); the same action «grow» (+2); the same place «milk» (+2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · wrong ✗

why'd the bread go all fuzzy and green

1. Germs in the air painted it green — ← Mova's choice · no support
2. The flour went bad and grew grass — no support
3. Mould, a fungus, grew on it from tiny spores — ✓ the right answer · no support
4. The bread turned green as it dried out on the shelf — 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 ✓

how does yeast make bread puff up

1. Yeast melts in the oven and fills with air — no support
2. Yeast makes the flour grow bigger in the heat — score 6
3. Yeast soaks up water and swells — no support
4. Yeast gives off bubbles of carbon dioxide — ← 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, against 6 for the next best. Its support: lesson 77, line 4: «Most bacteria are harmless or helpful: they rot dead things, help us digest food and turn milk into yogurt; only a few cause illness, and yeast makes bread ris…», reached through a sentence linked to the one the question matched. What matched: the same action «give off» (+4); the same thing acted on «bubbles» (+3); the same doer «yeast» (+2). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · right ✓

Leo says all bacteria are bad germs. true?

1. Yes, but only the bacteria you can see — no support
2. Yes, every kind of bacteria makes people ill — score 3
3. No, bacteria are only found in dirty water — no support
4. No, gut bacteria help us digest and bacteria make yogurt and cheese — ← 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 3 for the next best. Its support: lesson 77, line 13: «Bacteria in our gut help us to digest food.», reached through the option's own match among the sentences about the question's things. What matched: the same action «help» (+3); the same doer «bacteria» (+3). · the question and its options parsed, with trees and pragmatics

Test 13 · ★ · wrong ✗

my cousin reckons mushrooms are plants cos they grow in the ground. right?

1. Yes, mushrooms are plants without leaves — score 2
2. Yes, they make food from sunlight like plants — ← Mova's choice · score 7
3. No, mushrooms are tiny animals living in soil — no support
4. No, mushrooms are fungi and cannot make their own food — ✓ the right answer · score 5

Why: It took the question to ask which statement is true. It chose option 2 with score 7, against 5 for the next best. Its support: lesson 26, line 2: «Every food chain starts with a producer, a plant or alga that makes its own food from sunlight; the animals that eat are consumers.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+3); the same place «sunlight» (+2); the same circumstance (+2); the same thing acted on «own food» (+1). Against it: a different doer (counts against) (-1). The right option, 4, scored 5. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principal reason for which fungi are incapable of manufacturing their own food.

1. They are composed of a single cell — no support
2. They possess no roots — no support
3. They possess no chlorophyll — ✓ the right answer · score 5
4. They grow only in darkness — ← Mova's choice · 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 77, line 16: «Fungi and bacteria grow best where it is warm and damp; the cold of a fridge or freezer slows them almost to a stop.», reached through the option's own match among the sentences about the question's things. What matched: the same action «grow» (+3); the same doer «fungi» (+3). The right option, 3, scored 5. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Which of the following statements most accurately characterises the means by which fungi spread?

1. By spores — ← Mova's choice · ✓ the right answer · no support
2. By runners — no support
3. By seeds — no support
4. By bulbs — 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 ✓

Select the response that is consistent with the established facts concerning bacteria.

1. They are living things composed of one cell — ← Mova's choice · ✓ the right answer · score 7
2. They are all invariably harmful — no support
3. They are small fungi bearing spores — no support
4. They are visible to the unaided eye — 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 26, line 13: «Fungi, such as mushrooms and moulds, bacteria, which are living things far too small to see, and earthworms are decomposers.», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+3); the same doer «bacteria» (+3); the same thing acted on «things» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Ascertain the cause of the rising of bread dough.

1. Yeast gives off bubbles of carbon dioxide — ← Mova's choice · ✓ the right answer · score 6
2. The flour expands upon contact with water — no support
3. The salt draws air into the dough — no support
4. Bacteria give off bubbles of oxygen — score 1

Why: It took the question to ask which statement is true. It chose option 1 with score 6, against 1 for the next best. Its support: lesson 77, line 4: «Most bacteria are harmless or helpful: they rot dead things, help us digest food and turn milk into yogurt; only a few cause illness, and yeast makes bread ris…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «yeast» (+3); the same action «give off» (+2); the same thing acted on «bubbles» (+1). · the question and its options parsed, with trees and pragmatics

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