---
title: Beetles: the biggest group of animals on Earth, wing cases and six l… — how Mova does on the tests · Biology
description: Lesson 306 of the biology course of Mova's primary school: 5 of 11 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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# Beetles: the biggest group of animals on Earth, wing cases and six legs

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**Tests:** 5 of 11 right · **Exam:** 1 of 4 right · **Kind:** ★★ · **Understood:** 7 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 306 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/).

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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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/).

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### Test 1 · ★★ · wrong ✗ {#t1}

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Count them: 4 ladybirds sit on a leaf. How many legs and how many feelers?

- **1.** 32 legs and 8 feelers — **← Mova's choice** · no support
- **2.** 24 legs and 4 feelers — no support
- **3.** 16 legs and 4 feelers — no support
- **4.** 24 legs and 8 feelers — **✓ 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t1/)

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### Test 2 · ★★ · right ✓ {#t2}

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Count them: a beetle has five segments on each foot. How many foot segments on all its feet?

- **1.** 30 — **← Mova's choice** · **✓ the right answer** · no support
- **2.** 15 — no support
- **3.** 10 — no support
- **4.** 20 — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t2/)

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### Test 3 · ★★ · wrong ✗ {#t3}

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Count them: a seven-spot ladybird gets a month older. How many spots does it have now?

- **1.** 14 — **← Mova's choice** · no support
- **2.** Still 7 — **✓ the right answer** · no support
- **3.** 8 — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t3/)

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### Test 4 · ★★ · right ✓ {#t4}

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In A Bug's Life, Francis the ladybird and Dim the beetle are called «bugs». What would a scientist say?

- **1.** Beetles and ladybirds chew, so they are not true bugs, which suck through straws — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Only spiders are true bugs — no support
- **3.** Ladybirds are true bugs, because they are small and round, but beetles are not — no support
- **4.** Every insect is a true bug — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t4/)

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### Test 5 · ★★ · wrong ✗ {#t5}

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«gross there's a fat white worm in the soil» You see it is curled and has six little legs near its head. What is it most likely?

- **1.** A baby snake that has not grown up yet — **← Mova's choice** · no support
- **2.** A caterpillar's egg — no support
- **3.** An earthworm that grew legs — no support
- **4.** A beetle grub, perhaps a chafer — **✓ 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t5/)

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### Test 6 · ★★ · right ✓ {#t6}

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What would happen if a museum's hide beetles escaped into the hall of stuffed animals?

- **1.** They would clean all the glass cases until they shone — no support
- **2.** Nothing, they only eat bones in labs — score 2
- **3.** They would starve at once — no support
- **4.** They, or similar beetles, could eat the stuffed animals — **← Mova's choice** · **✓ the right answer** · score 5

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 5, against 2 for the next best. Its support: lesson 306, line 12: «Museums use hide beetles to eat dried flesh off bones without harming them, cleaning a small skull in a few days, but similar beetles are pests that eat stuffe…», reached through the same lesson line as the sentence the question matched. What matched: the same action «eat» (+4); the same thing acted on «stuffed animals» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t6/)

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### Test 7 · ★★ · right ✓ {#t7}

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«why's that beetle look like it's holding a shiny ball underwater?» What is it?

- **1.** A beetle laying a glass egg — score 4
- **2.** A beetle with a cold — no support
- **3.** A diving beetle carrying a bubble of air to breathe — **← Mova's choice** · **✓ the right answer** · score 5
- **4.** A beetle blowing bubbles for fun to show off to others — score 1

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**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 5, against 4 for the next best. Its support: lesson 306, line 10: «Beetles live almost everywhere: ponds, deserts, mountains, caves and kitchens; flour beetles can live in a packet of dried food, and the great diving beetle ca…», reached through the option's own match among the sentences about the question's things. What matched: the same action «carry» (+3); the same thing acted on «bubble» (+1); its «because» matches the remembered cause (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t7/)

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### Test 8 · ★★ · wrong ✗ {#t8}

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Why might beetles be so successful?

- **1.** They never have any enemies — score 1
- **2.** They live for hundreds of years and lay millions of eggs each year — **← Mova's choice** · score 7
- **3.** Hard wing cases protect them so they can live almost anywhere — **✓ the right answer** · score 7
- **4.** They are the only animals with legs — score 1

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**Why:** It took the question to ask why something happens (its cause). It chose option 2 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 306, line 10: «Beetles live almost everywhere: ponds, deserts, mountains, caves and kitchens; flour beetles can live in a packet of dried food, and the great diving beetle ca…», reached through the same lesson line as the sentence the question matched. What matched: the same action «live» (+4); the same doer «beetles» (+3). The right option, 3, scored 7. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t8/)

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### Test 9 · ★★ · wrong ✗ {#t9}

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A shield bug looks just like a beetle. What would show it is a true bug?

- **1.** Its six legs — **← Mova's choice** · no support
- **2.** Its two feelers — no support
- **3.** Its straw-like mouth for sucking — **✓ the right answer** · no support
- **4.** Its hard, shiny back like a shield — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t9/)

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### Test 10 · ★★ · wrong ✗ {#t10}

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Three featherwing beetles in a row are about 1 millimetre long. About how many would fit in a line 1 centimetre long?

- **1.** About 10 — **← Mova's choice** · no support
- **2.** About 300 — no support
- **3.** About 30 — **✓ the right answer** · no support
- **4.** About 3 — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t10/)

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### Test 11 · ★★ · right ✓ {#t11}

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«a car ran over that beetle and it just walked off?? no way» Which beetle could this be?

- **1.** The diabolical ironclad beetle, with very strong armour — **← Mova's choice** · **✓ the right answer** · score 8
- **2.** A titan beetle, because it is the biggest and so the strongest — score 6
- **3.** Any beetle, they are all unbreakable — score 6
- **4.** A ladybird, which is made of rubber — no support

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**Why:** It took the question to ask who or what does it. It chose option 1 with score 8, against 6 for the next best. Its support: lesson 185, line 9: «The tiger beetle runs so fast for its size that its eyes cannot keep up, so it stops to look again; for its size it is faster than a cheetah.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «tiger beetle» (+2); a different action (counts against) (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/t11/)

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

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Identify the structures designated elytra in beetles.

- **1.** Hardened forewings that enclose and protect the membranous hind wings — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Segments of the foot employed in classification — no support
- **3.** Mouthparts adapted for the sucking of fluids — no support
- **4.** Sensory appendages situated upon the head — 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/e1/)

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

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Which of the following statements most accurately characterises the number of described species of beetle?

- **1.** Precisely one million species are described and no more remain — **← Mova's choice** · score 3
- **2.** Approximately four hundred thousand species are described, more than any other animal group — **✓ the right answer** · score 3
- **3.** Approximately four thousand species are described, fewer than birds — score 3
- **4.** Beetles constitute a single species with numerous varieties — score 2

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**Why:** It took the question to ask who or what does it. It chose option 1 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 304, line 6: «Writings from China about 1,700 years ago describe farmers putting weaver ant nests in citrus trees to eat pests, one of the oldest known uses of one animal to…», reached through the remembered sentence the question matched. What matched: the same thing acted on «farmers» (+2); the same action «describe» (+1). The right option, 2, scored 3. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/e2/)

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

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Select the response consistent with the established facts concerning the spots of the seven-spot ladybird.

- **1.** The number of spots indicates the species and does not alter with age — **✓ the right answer** · no support
- **2.** The number of spots decreases as the insect ages — no support
- **3.** The number of spots indicates the number of eggs laid — **← Mova's choice** · score 3
- **4.** The number of spots increases by one with each year of life — no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 306, line 14: «A ladybird's spots do not show its age; they show its kind, so a seven-spot ladybird always has seven, and the bright colours warn birds that it tastes bad.», reached through the option's own match among the sentences about the question's things. What matched: the same action «show» (+3); the same thing acted on «kind» (+1). Against it: a different doer (counts against) (-1). 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/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/e3/)

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

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Ascertain the principal distinction between beetles and the insects that scientists term true bugs.

- **1.** Beetles inhabit only water, whereas true bugs inhabit only land — **← Mova's choice** · score 2
- **2.** Beetles possess eight legs, whereas true bugs possess six — score 0
- **3.** Beetles lack wings, whereas true bugs possess four — score 0
- **4.** Beetles possess biting jaws, whereas true bugs possess a sucking, straw-like mouth — **✓ the right answer** · score 0

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 2, against 0 for the next best. Its support: lesson 306, line 10: «Beetles live almost everywhere: ponds, deserts, mountains, caves and kitchens; flour beetles can live in a packet of dried food, and the great diving beetle ca…», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+3). Against it: the same doer «flour beetles» (-1). The right option, 4, scored 0. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/306-beetles-the-biggest-group-of-animals-on-earth-wing-cases-and-six-legs/e4/)

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- ← previous: [305. Bees beyond the hive: bumblebees, solitary bees,…](https://md.mova.elamur.ai/free/en/school-run/biology/305-bees-beyond-the-hive-bumblebees-solitary-bees-carpenter-bees-and-stingless-bees/)
- next →: [307. Beetles of every kind: stag beetles, dung beetle…](https://md.mova.elamur.ai/free/en/school-run/biology/307-beetles-of-every-kind-stag-beetles-dung-beetles-fireflies-bombardiers-and-weevils/)
- ↑ back to [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/)