Spiders, scorpions and other eight-legged creatures

Tests: 6 of 12 right · Exam: 2 of 4 right · Kind: ★★ · Understood: 10 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 38 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 · ★★ · right ✓

My mate says spiders are insects cos they're creepy-crawlies. Is he right?

1. Yes, but only small spiders — no support
2. No, spiders are crustaceans — no support
3. Yes, all the creepy-crawlies in the garden are insects of some kind — no support
4. No, spiders are arachnids with eight legs and two body parts — ← Mova's choice · ✓ the right answer · score 12

Why: It took the question to ask which statement is true. It chose option 4 with score 12, the only option with support. Its support: lesson 38, line 1: «Spiders are not insects: they are arachnids, with eight legs, a body in only two parts, no feelers, no wings, and usually eight eyes.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «spiders» (+5); the same thing acted on «arachnids» (+3); the same circumstance (+2); the same light verb (be, have, do, get, go) (+2). · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · right ✓

lol u swallow 8 spiders a year in ur sleep. right?

1. Myth: a sleeping, breathing person is the last place a spider wants to go — ← Mova's choice · ✓ the right answer · no support
2. True, but only in the summer when windows are left open at night — no support
3. True, more if you snore — no support
4. True, exactly eight — 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 3 · ★★ · right ✓

A spider sits in the bath. Your sister says it came up the plughole. What's more likely?

1. It came in with the shampoo — no support
2. It swam up through the water pipes from the drain — no support
3. It was born in the bath — no support
4. It fell in and cannot climb the smooth sides — ← Mova's choice · ✓ the right answer · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, the only option with support. Its support: lesson 38, line 9: «In autumn male house spiders wander indoors looking for females, and they get stuck in the bath because they cannot climb its smooth sides.», reached through the option's own match among the sentences about the question's things. What matched: the same action «climb» (+2); the same doer «spiders» (+1); the same thing acted on «smooth sides» (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★★ · right ✓

Popular myth: the daddy longlegs is the most venomous spider but its fangs are too small to bite. What is the truth?

1. It is deadly but cannot bite — no support
2. It is not a spider and has no venom glands at all — ← Mova's choice · ✓ the right answer · score 2
3. It is a kind of wasp — no support
4. It is deadly to dogs and cats, but its bite does no harm to people — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 2, the only option with support. Its support: lesson 38, line 5: «Spiders are mostly harmless to people, but a few are dangerous, so we watch and never handle wild ones, and we forget the myth about swallowing spiders in our…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «myth» (+1); the same thing acted on «spiders» (+1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · wrong ✗

In a cartoon a spider has six legs and two feelers. How would you correct the drawing?

1. Give it four legs and a long tail — ← Mova's choice · no support
2. It is already correct — no support
3. Give it eight legs and no feelers — ✓ the right answer · no support
4. Give it ten legs and wings — 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 6 · ★★ · wrong ✗

What would happen if an orb spider walked over the sticky spiral all the time?

1. Nothing, spiders never stick to anything — no support
2. It would spin faster — ← Mova's choice · score 4
3. It could get stuck and waste the glue — ✓ the right answer · score 4
4. It would catch more flies — no support

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 38, line 7: «An orb spider spins spokes of dry silk and then a sticky spiral, and it walks mostly on the dry spokes; many eat their old web and spin a new one.», reached through the option's own match among the sentences about the question's things. What matched: the same action «spin» (+2); the same doer «orb spider» (+2). The right option, 3, scored 4. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · wrong ✗

Why do spiderlings balloon away instead of staying near home?

1. Their mother chases them off — ← Mova's choice · no support
2. Spreading out means they don't compete for the same food — ✓ the right answer · no support
3. They are trying to reach the moon on their silk — no support
4. They want to find water — 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 8 · ★★ · wrong ✗

A sailor finds tiny spiders landing on his ship far out at sea. How did they get there?

1. They lived in the sails since the ship was built — ← Mova's choice · score 7
2. By ballooning on silk threads in the air — ✓ the right answer · no support
3. They were in the fish he caught — no support
4. They swam from the shore — no support

Why: It took the question to ask what something is like. It chose option 1 with score 7, the only option with support. Its support: lesson 38, line 19: «The diving bell spider of European ponds lives underwater in a silk tent filled with air from the surface.», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+4); the same doer «bell spider» (+3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · right ✓

A tick is stuck on your dog after a walk. What should you do?

1. Leave it, ticks fall off at once — no support
2. Burn it off with a match — no support
3. Ask an adult to remove it with a tick tool — ← Mova's choice · ✓ the right answer · score 5
4. Pull it off with your fingers and squash it — no support

Why: It took the question to ask what is done. It chose option 3 with score 5, the only option with support. Its support: lesson 24, line 17: «Never approach a strange dog or a wild animal, because even friendly-looking ones may bite if scared or protecting food or young; to stroke a dog, ask its owne…», reached through a sentence linked to the one the question matched. What matched: it fills the role the question asks for (+3); the same action «ask» (+2). · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · wrong ✗

A black widow with a red hourglass on its belly is in a documentary. What is true?

1. It is harmless like all spiders — ← Mova's choice · no support
2. It is one of the few spiders dangerous to people, and antivenoms exist — ✓ the right answer · no support
3. It is a kind of beetle — no support
4. It lives in every British house, hiding in the corners and the bath — 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

Test 11 · ★★ · wrong ✗

In a game, a jumping spider builds a huge web to catch prey. What does a real jumping spider do?

1. It catches small fish in ponds with its front legs — ← Mova's choice · score 12
2. It stalks and pounces with no web to catch prey — ✓ the right answer · score 12
3. It builds the biggest webs of all — score 4
4. It digs traps in sand — no support

Why: It took the question to ask what is done. It chose option 1 with score 12, tied with another option at 12 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 38, line 18: «Ticks are eight-legged arachnids that climb grass and grab passing animals to drink their blood; some carry Lyme disease, so a tick should be removed by an adu…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «grab» (+4); the same doer «legged arachnids» (+4). Against it: a different thing acted on (counts against) (-2). The right option, 2, scored 12. · the question and its options parsed, with trees and pragmatics

Test 12 · ★★ · right ✓

Why does a dead spider curl its legs underneath it?

1. It is pretending to be a ball — score 1
2. Its legs are stretched by blood pressure, which is gone — ← Mova's choice · ✓ the right answer · score 6
3. It always sleeps like that, curled up — score 0
4. It is trying to keep warm — score 0

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 6, against 1 for the next best. Its support: lesson 38, line 11: «Spiders stretch their legs out by pumping blood into them, so when a spider dies the pressure is gone and its legs curl underneath it.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «pressure» (+2); the same property (+2); the same light verb (be, have, do, get, go) (+2). · 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 anatomical distinction between spiders and insects?

1. Spiders possess wings but no legs — ← Mova's choice · score 7
2. Spiders possess eight legs and two body parts and lack antennae — ✓ the right answer · score 7
3. There is no distinction between them of any kind, the two being one group — no support
4. Spiders possess six legs and three body parts — score 7

Why: It took the question to ask who or what does it. It chose option 1 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 38, line 6: «Spiders are arachnids: they have eight legs, a body in two parts, no feelers and no wings, and most have eight eyes.», 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 (+3); the same doer «spiders» (+2); the same thing acted on «eight legs» (+2). The right option, 2, scored 7. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Identify the means by which juvenile spiders disperse through the air.

1. The use of rudimentary wings — ← Mova's choice · no support
2. Attachment to the feathers of migrating birds — no support
3. Leaping from great heights — no support
4. The release of silk threads borne upon the breeze — ✓ 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 3 · formal language · right ✓

Ascertain the principal characteristic of the harvestman which distinguishes it from true spiders.

1. A single rounded body, two eyes, and no silk or venom — ← Mova's choice · ✓ the right answer · no support
2. Six legs and a pair of wings — no support
3. Eight eyes and a highly potent venom — no support
4. The construction of orb webs — 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 ✓

It is given that a tick has attached itself to a domestic dog. Select the appropriate course of action.

1. Leaving it in place indefinitely — no support
2. Removal by crushing it hard between the fingers — no support
3. Burning with a lit match — no support
4. Removal by an adult using a tick tool — ← Mova's choice · ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 4 with score 3, the only option with support. Its support: lesson 38, line 18: «Ticks are eight-legged arachnids that climb grass and grab passing animals to drink their blood; some carry Lyme disease, so a tick should be removed by an adu…», reached through the remembered sentence the question matched. What matched: the same doer «adult» (+2); the same action «remove» (+1). · the question and its options parsed, with trees and pragmatics

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