---
title: Myth check: are bats blind? — how Mova does on the tests · Biology
description: Lesson 153 of the biology course of Mova's primary school: 8 of 11 tests right, exam 2 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Myth check: are bats blind?

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**Tests:** 8 of 11 right · **Exam:** 2 of 4 right · **Kind:** ★★ · **Understood:** 9 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 153 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/153-are-bats-blind/).

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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/153-are-bats-blind/).

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### Test 1 · ★★ · right ✓ {#t1}

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«as blind as a bat, so it can't see me if i wave» What is right?

- **1.** Bats can only see the colour red, so the rest of the world looks black to them — score 3
- **2.** Right, but they can smell you — no support
- **3.** Right, bats see nothing at all — score 3
- **4.** Bats can see, and many also find things by echoes — **← Mova's choice** · **✓ the right answer** · score 8

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 8, against 3 for the next best. Its support: lesson 69, line 13: «Bats are not blind: all bats can see, and many also find insects in the dark by echolocation, making high squeaks and listening for the echoes.», reached through the same lesson line as the sentence the question matched. What matched: the same action «find» (+5); the same doer «many» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t1/)

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### Test 2 · ★★ · wrong ✗ {#t2}

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«a bat flew past my head, it was gonna get stuck in my hair!!» What is right?

- **1.** Yes, bats aim for hair — score 0
- **2.** Yes, it wanted to pull out some of your hair to build a nest in the roof — **← Mova's choice** · score 3
- **3.** Yes, bats cannot steer — no support
- **4.** It was most likely catching insects near you; bats are very good at avoiding things — **✓ 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 3, against 0 for the next best. Its support: lesson 95, line 12: «Only three of more than 1,400 kinds of bat drink blood; they live in Central and South America, make a tiny cut on sleeping animals and lap the blood.», 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 «bats» (+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/153-are-bats-blind/t2/)

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### Test 3 · ★★ · right ✓ {#t3}

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In a scary film a vampire bat flies into a bedroom and bites a sleeping person. What is true?

- **1.** Real vampire bats are small, live in the Americas and mostly feed on farm animals and birds — **← Mova's choice** · **✓ the right answer** · score 7
- **2.** Real vampire bats are as big as eagles and fly to Europe every winter to feed — score 4
- **3.** All bats drink human blood — score 2
- **4.** That happens every night in Europe — no support

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**Why:** It took the question to ask which statement is true. It chose option 1 with score 7, against 4 for the next best. Its support: lesson 153, line 9: «Real vampire bats are small, live in Central and South America, and mostly feed on the blood of cattle, horses and birds, rarely people.», reached through the option's own match among the sentences about the question's things. What matched: the same property (+3); the same light verb (be, have, do, get, go) (+3); the same doer «real vampire bats» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t3/)

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### Test 4 · ★★ · right ✓ {#t4}

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Batman wears a dark bat costume to look frightening. Which is true about real bats?

- **1.** Most are shy and useful, eating pests and spreading seeds — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Bats are a kind of bird, just one with fur instead of feathers — no support
- **3.** Bats only come out at Halloween — no support
- **4.** All bats are dangerous to people — 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/153-are-bats-blind/t4/)

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### Test 5 · ★★ · wrong ✗ {#t5}

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A bat has a body, two wings and two feet. Five bats hang from a cave roof. How many wings?

- **1.** 15 — **← Mova's choice** · no support
- **2.** 10 — **✓ the right answer** · no support
- **3.** 20 — no support
- **4.** 5 — 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/153-are-bats-blind/t5/)

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### Test 6 · ★★ · right ✓ {#t6}

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Each wing of a bat is a hand. Three bats spread their wings. How many thumbs are sticking out as hooks?

- **1.** 6 — **← Mova's choice** · **✓ the right answer** · score 6
- **2.** 12 — score 6
- **3.** 30 — score 6
- **4.** 3 — score 6

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**Why:** It took the question to ask what it is done to. It chose option 1 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 153, line 12: «A bat's wing is its hand: long finger bones hold out thin stretchy skin, and the thumb is a little free hook.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+4); the same doer «thumb» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t6/)

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### Test 7 · ★★ · wrong ✗ {#t7}

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What would happen if all the insect-eating bats near a farm disappeared?

- **1.** Crops would grow twice as fast — no support
- **2.** Nothing would change — no support
- **3.** Many more insects would eat the crops and bite people and animals — **✓ the right answer** · no support
- **4.** The fruit trees would make much more fruit, because no bats would be eating it — **← Mova's choice** · score 1

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**Why:** It took the question to ask what happens next. It chose option 4 with score 1, the only option with support. Its support: lesson 153, line 15: «Some bats feed on fruit and nectar and, like bees, carry pollen between flowers and spread seeds; the wild ancestors of bananas and the agave are pollinated by…», reached through what followed the sentence the question matched. What matched: the same doer «bats» (+4). Against it: a different action (counts against) (-3). The right option, 3, 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/153-are-bats-blind/t7/)

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### Test 8 · ★★ · right ✓ {#t8}

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«lol why's a bat hanging upside down, gonna get a headache» Why does it hang like that?

- **1.** It is too lazy to stand up — no support
- **2.** It fell and got stuck — no support
- **3.** It can drop straight into flight, and its locked claws make hanging effortless — **← Mova's choice** · **✓ the right answer** · score 5
- **4.** It is trying to see the world differently, upside down, just for fun — 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 1 for the next best. Its support: lesson 142, line 6: «Long curved claws hook over branches, so a sloth can hang upside down for hours, even asleep, without tiring.», reached through the cause of the sentence the question matched. What matched: the same doer «long curved claws» (+3); 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/153-are-bats-blind/t8/)

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### Test 9 · ★★ · right ✓ {#t9}

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A boy in winter finds bats asleep in a cold cave and wants to wake one to look at it. What is the best answer?

- **1.** Wake it gently with a torch — no support
- **2.** Leave it; waking it burns fat it needs to live until spring — **← Mova's choice** · **✓ the right answer** · score 7
- **3.** Wake it up, because then it will fly out and eat lots more insects for you — score 1
- **4.** Wake it, bats like visitors — no support

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**Why:** It took the question to ask what it is done to. It chose option 2 with score 7, against 1 for the next best. Its support: lesson 153, line 17: «In cold countries many bats hibernate, and waking them uses up their stored fat, so bat caves are closed to visitors in winter.», reached through a sentence linked to the one the question matched. What matched: the same doer «waking» (+3); it fills the role the question asks for (+3); the same thing acted on «stored fat» (+2). Against it: a different action (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t9/)

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### Test 10 · ★★ · right ✓ {#t10}

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A tiger moth makes clicks when a bat comes near. What might the clicks do?

- **1.** Call other bats to dinner — score 3
- **2.** Make the moth fly faster — score 3
- **3.** Confuse the bat's echolocation or warn that the moth tastes bad — **← Mova's choice** · **✓ the right answer** · score 11
- **4.** Help the moth see in the dark — score 10

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**Why:** It took the question to ask what is done. It chose option 3 with score 11, against 10 for the next best. Its support: lesson 153, line 16: «Many moths can hear bat calls and dive or drop to escape, and some tiger moths click back at bats, which may confuse the bat's echolocation or warn that the mo…», 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 action «taste» (+3); the same doer «moth» (+3); the same property (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t10/)

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### Test 11 · ★★ · right ✓ {#t11}

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How can a bat flying through a dark wood avoid a thin wire?

- **1.** It hears the echo of its calls coming back from the wire — **← Mova's choice** · **✓ the right answer** · score 3
- **2.** It sees the wire glowing — score 3
- **3.** It remembers exactly where the wire was from the night before — no support
- **4.** It smells the metal — no support

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**Why:** It took the question to ask what something is like. 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 14, line 13: «Small bats like pipistrelles hunt insects around street lamps by echolocation, shouting and listening for echoes; bats are not blind, and one pipistrelle can e…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «small bats» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/153-are-bats-blind/t11/)

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### Exam question 1 · formal language · wrong ✗ {#e1}

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Select the response consistent with the established facts concerning the visual capacity of bats.

- **1.** Sight is present solely in bats inhabiting caverns — **← Mova's choice** · no support
- **2.** All species of bat possess sight, and numerous species see with considerable acuity — **✓ the right answer** · no support
- **3.** Only juvenile bats are possessed of sight — no support
- **4.** The members of the order are without exception entirely blind — 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/153-are-bats-blind/e1/)

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

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Identify the principal means by which insectivorous bats determine the position of prey in darkness.

- **1.** The perception of heat emitted by the insects — **← Mova's choice** · no support
- **2.** The detection of the scent of insects at great distance by means of the large nose — no support
- **3.** The emission of high-pitched calls and the interpretation of their echoes — **✓ the right answer** · no support
- **4.** The tracing of insects by the light of the moon alone — 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/153-are-bats-blind/e2/)

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### Exam question 3 · formal language · right ✓ {#e3}

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Which of the following statements most accurately characterises the diet of the common vampire bat?

- **1.** It subsists principally upon the blood of cattle, horses and birds, and seldom upon that of human beings — **← Mova's choice** · **✓ the right answer** · no support
- **2.** It subsists exclusively upon fruit and nectar — no support
- **3.** It subsists principally upon the blood of human beings, whom it visits at night in the towns of Europe — no support
- **4.** It subsists principally upon fish taken from rivers — 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/153-are-bats-blind/e3/)

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### Exam question 4 · formal language · right ✓ {#e4}

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Given that each of four bats possesses the customary number of wings, determine the aggregate number of wings.

- **1.** Eight — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Sixteen — no support
- **3.** Twelve — no support
- **4.** Four — 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/153-are-bats-blind/e4/)

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- ← previous: [152. Myth check: do goldfish have a three-second memo…](https://md.mova.elamur.ai/free/en/school-run/biology/152-goldfish-memory/)
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