---
title: Bees, worms and soil: the hidden helpers of our food — how Mova does on the tests · Biology
description: Lesson 291 of the biology course of Mova's primary school: 6 of 12 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Bees, worms and soil: the hidden helpers of our food

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**Tests:** 6 of 12 right · **Exam:** 1 of 4 right · **Kind:** ★★★ · **Understood:** 10 of 16 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 291 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](https://md.mova.elamur.ai/free/en/corpora/school/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/).

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### Test 1 · ★★★ · right ✓ {#t1}

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«bees are all dying, honey's gonna run out» What is more accurate?

- **1.** No bees are in trouble at all, it's all made up — no support
- **2.** Honeybees are kept by beekeepers, but many wild bees are declining — **← Mova's choice** · **✓ the right answer** · score 4
- **3.** Every kind of bee will be gone next year, so honey will run out then — no support
- **4.** Honey comes from wasps now, not bees — no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 291, line 7: «Honeybees are kept by beekeepers and are not close to dying out, but many wild bees and other pollinators are declining because of lost flowers, pesticides, di…», reached through the option's own match among the sentences about the question's things. What matched: the same action «decline» (+2); the same doer «many wild bees» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t1/)

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### Test 2 · ★★★ · right ✓ {#t2}

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«chopped a worm with the spade, now there's two, cool» What is right?

- **1.** Worms grow back from any piece, even a tiny one — no support
- **2.** Yes, both halves just grow into two worms — score 1
- **3.** It turns into a snake — score 4
- **4.** Usually it dies; the tail end cannot grow a new head — **← Mova's choice** · **✓ the right answer** · score 6

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 6, against 4 for the next best. Its support: lesson 291, line 13: «Cutting a worm in half usually kills it; sometimes the head end heals and survives, but the tail end cannot grow a new head, and it is cruel to try.», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «new head» (+3); the same action «grow» (+2); the same doer «tail end» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t2/)

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### Test 3 · ★★★ · right ✓ {#t3}

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Count them: a ladybird has 6 legs. 7 ladybirds sit on a rose. How many legs?

- **1.** 42 — **← Mova's choice** · **✓ the right answer** · no support
- **2.** 49 — no support
- **3.** 36 — no support
- **4.** 13 — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t3/)

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### Test 4 · ★★★ · wrong ✗ {#t4}

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Count them: a barn owl family is 2 parents and 4 owlets. How many wings?

- **1.** 8 — **← Mova's choice** · no support
- **2.** 12 — **✓ the right answer** · no support
- **3.** 24 — no support
- **4.** 6 — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t4/)

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### Test 5 · ★★★ · right ✓ {#t5}

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What would happen to an orchard if every bee and pollinator vanished?

- **1.** Very little fruit would form unless people pollinated by hand — **← Mova's choice** · **✓ the right answer** · score 0
- **2.** The trees would make more fruit, since no bees would steal the nectar — score -1
- **3.** The apples would grow on the roots instead — no support
- **4.** Nothing at all, because the wind does all of it — no support

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**Why:** It took the question to ask what happens next. It chose option 1 with score 0, against -1 for the next best. Its support: lesson 239, line 15: «Many kinds of wild bee are in danger from fewer flowers, disease and some pesticides, and bees pollinate crops like apples, strawberries and almonds.», reached through the option's own match among the sentences about the question's things. What matched: the same action «pollinate» (+1). Against it: a different thing acted on (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t5/)

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### Test 6 · ★★★ · wrong ✗ {#t6}

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In a cartoon a happy bee makes honey from a flower in one minute and fills a jar. What is real?

- **1.** Bees buy their honey from people — score 3
- **2.** Bees make honey by chewing up green leaves — **← Mova's choice** · score 8
- **3.** One bee really can fill a whole jar in a minute — score 5
- **4.** Honey takes many bees many flights and weeks of work — **✓ the right answer** · no support

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 8, against 5 for the next best. Its support: lesson 239, line 9: «Bees make honey from nectar by adding enzymes and fanning it with their wings until most of the water is gone, and it feeds them in winter.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «honey» (+3); the same action «make» (+2); the same doer «bees» (+2); its «because» matches the remembered cause (+1). The right option, 4, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t6/)

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### Test 7 · ★★★ · wrong ✗ {#t7}

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In Winnie the Pooh, Pooh scoops honey from a tree with his paw. Who really made that honey?

- **1.** The tree itself, from the sweet sap inside its trunk — score 3
- **2.** Many worker bees, from nectar they collected — **✓ the right answer** · score 7
- **3.** One queen bee all on her own — **← Mova's choice** · score 11
- **4.** Pooh himself, by licking flowers — no support

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**Why:** It took the question to ask who or what does it. It chose option 3 with score 11, against 7 for the next best. Its support: lesson 36, line 13: «Bees make honey from nectar by passing it between workers and fanning it until most of the water is gone; one worker makes only about a twelfth of a teaspoon i…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same action «make» (+3); the same doer «bees» (+2); the same thing acted on «honey» (+2). The right option, 2, scored 7. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t7/)

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### Test 8 · ★★★ · wrong ✗ {#t8}

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«compost heap's steaming, is it on fire» What is happening?

- **1.** Someone poured a kettle of hot water in — **← Mova's choice** · no support
- **2.** The worms are cooking it — no support
- **3.** Yes, it is about to burst into flames — no support
- **4.** Microbes breaking down the scraps make heat — **✓ the right answer** · no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t8/)

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### Test 9 · ★★★ · right ✓ {#t9}

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Why could spraying a field against aphids end up making the aphid problem worse?

- **1.** The spray may kill the ladybirds that eat the aphids — **← Mova's choice** · **✓ the right answer** · score 5
- **2.** Aphids love the smell of the spray and fly in from miles around — no support
- **3.** Sprays make the aphids grow bigger and hungrier — no support
- **4.** Ladybirds eat the spray and grow — score 1

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**Why:** It took the question to ask why something happens (its cause). It chose option 1 with score 5, against 1 for the next best. Its support: lesson 48, line 13: «Ladybirds also go through egg, larva, pupa and adult; their spiky grey larvae look like tiny alligators and eat aphids, and one ladybird can eat thousands of a…», reached through the option's own match among the sentences about the question's things. What matched: the same action «eat» (+2); the same thing acted on «aphids» (+2); a different doer (counts against) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t9/)

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### Test 10 · ★★★ · wrong ✗ {#t10}

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«dirt's just dirt, mate» What would a soil scientist say?

- **1.** Only worms live in soil, and nothing smaller than a worm — no support
- **2.** A handful holds more living things than there are people on Earth — **✓ the right answer** · score 2
- **3.** Soil has no life in it at all during the winter months — no support
- **4.** Soil is crushed stone and nothing else — **← Mova's choice** · score 5

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**Why:** It took the question to ask what it is done to. It chose option 4 with score 5, against 2 for the next best. Its support: lesson 268, line 14: «Microraptor had long feathers on its arms and legs, could glide between trees, and its feathers were shiny black like a starling's, which scientists could tell…», 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 «tiny holding shapes» (+2). The right option, 2, scored 2. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t10/)

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### Test 11 · ★★★ · right ✓ {#t11}

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What would happen if a farmer left a huge ploughed field bare through a hot windy drought?

- **1.** The soil would grow a crop alone — score 0
- **2.** The wind would make the soil richer — score 2
- **3.** Worms would cover it in a night — score 6
- **4.** The dry soil could blow away like in the Dust Bowl — **← Mova's choice** · **✓ the right answer** · score 9

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**Why:** It took the question to ask what happens next. It chose option 4 with score 9, against 6 for the next best. Its support: lesson 291, line 18: «In the 1930s the ploughed prairies of America dried out and the soil blew away in huge dust storms called the Dust Bowl; many families lost their farms, and fa…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «soil» (+4); the same action «blow away» (+3); the same property (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t11/)

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### Test 12 · ★★★ · wrong ✗ {#t12}

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Why is it so serious to lose soil, when it is just under our feet?

- **1.** A few centimetres take hundreds of years to form — **✓ the right answer** · no support
- **2.** Soil grows back by itself every spring — no support
- **3.** We can grow all our food on bare rock instead — no support
- **4.** Soil can be made in a factory in a single day — **← Mova's choice** · score 4

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**Why:** It took the question to ask why something happens (its cause). It chose option 4 with score 4, the only option with support. Its support: lesson 250, line 13: «Clover, peas and beans have little lumps on their roots full of helpful bacteria that take nitrogen from the air and turn it into plant food, and the plant giv…», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2); the same thing acted on «soil» (+2). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/t12/)

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### Exam question 1 · formal language · right ✓ {#e1}

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Identify the principal service rendered by the honeybee to the cultivation of fruit.

- **1.** The transfer of pollen between flowers, permitting the formation of fruit — **← Mova's choice** · **✓ the right answer** · no support
- **2.** The destruction of insects injurious to the leaves of fruit trees — no support
- **3.** The enrichment of the soil of orchards by means of honey and wax — no support
- **4.** The irrigation of blossoms by means of nectar — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/e1/)

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### Exam question 2 · formal language · wrong ✗ {#e2}

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Select the response consistent with the established facts concerning the bisection of an earthworm.

- **1.** It is without consequence for the animal, which feels no pain — **← Mova's choice** · score 3
- **2.** It causes the worm to grow two heads — score 1
- **3.** It invariably produces two complete worms, each of which regenerates the missing part — score 1
- **4.** It usually results in death, the posterior part being incapable of forming a new head — **✓ the right answer** · no support

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 3, against 1 for the next best. Its support: lesson 260, line 3: «Touch a hot pan and your hand jerks away before you even feel the pain: the message takes a shortcut through the spinal cord, which sends the «pull away» order…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «pain» (+3); the same action «feel» (+2). Against it: a different doer (counts against) (-2). The right option, 4, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/e2/)

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### Exam question 3 · formal language · wrong ✗ {#e3}

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Which of the following statements most accurately characterises the Dust Bowl of the 1930s?

- **1.** A volcanic eruption in the western United States — **← Mova's choice** · no support
- **2.** A period of abundant harvests upon the American prairies, owing to deep and frequent ploughing — no support
- **3.** The erosion by wind of dried, ploughed prairie soil, resulting in the loss of many farms — **✓ the right answer** · no support
- **4.** A flood which deposited great quantities of dust upon the plains — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/e3/)

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### Exam question 4 · formal language · wrong ✗ {#e4}

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Ascertain the role of the ladybird in agriculture.

- **1.** It consumes stored grain — **← Mova's choice** · no support
- **2.** It consumes aphids and thereby serves as a natural means of pest control — **✓ the right answer** · no support
- **3.** It pollinates cereal crops and is therefore indispensable to the harvest — no support
- **4.** It enriches the soil with its casts in the manner of the earthworm — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/291-bees-worms-and-soil-the-hidden-helpers-of-our-food/e4/)

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- ← previous: [290. Insects as food in other countries](https://md.mova.elamur.ai/free/en/school-run/biology/290-insects-as-food-in-other-countries/)
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- ↑ back to [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/)