Defences: venom in snakes, jellyfish, scorpions and the platypus
Tests: 8 of 11 right · Exam: 0 of 4 right · Kind: plain · Understood: 11 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 246 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 ✓
In The Jungle Book, Kaa the python hypnotises Mowgli with spiral eyes. What is true?
- 1. Pythons really hypnotise their prey with their stare — no support
- 2. Snakes cannot hypnotise, they just cannot blink — ← Mova's choice · ✓ the right answer · score 4
- 3. Snakes hypnotise with their tongues — score 1
- 4. Only very old snakes can hypnotise — score 1
Why: It took the question to ask which statement is true. It chose option 2 with score 4, against 1 for the next best. Its support: lesson 30, line 4: «In The Jungle Book, Kaa the python hypnotises people with spinning eyes; real snakes can't hypnotise anyone, they just have no eyelids, so their stare never bl…», reached through the same lesson line as the sentence the question matched. What matched: the same action «hypnotise» (+3); the same doer «real snakes» (+1). · the question and its options parsed, with trees and pragmatics
Test 2 · right ✓
«mate got bit by a snake on the trail, should i suck the venom out like in the films»
- 1. Yes, after cutting the bite open — score 1
- 2. No, keep him still and get help fast — ← Mova's choice · ✓ the right answer · score 4
- 3. No, make him run to the car — no support
- 4. Yes, as fast as you can — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 4, against 1 for the next best. Its support: lesson 246, line 18: «If a snake is on a path, stand still or back away slowly, because snakes bite mostly when trapped or stepped on; if someone is bitten, keep them still and get…», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «help» (+3); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics
Test 3 · right ✓
«platypus is a cute duck-beaver, can't hurt anyone lol» What is right?
- 1. It is completely harmless in every way — no support
- 2. A male's back-leg spurs carry venom that causes terrible pain — ← Mova's choice · ✓ the right answer · score 5
- 3. It spits a stream of poison from its beak at anyone who comes close to its burrow — no support
- 4. It has a venomous bite with fangs, like a cobra — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 5, the only option with support. Its support: lesson 43, line 4: «In cartoons the platypus is a funny duck-beaver that quacks; the real one never quacks, hunts with its eyes shut by feeling electricity, and the males carry ve…», reached through the same lesson line as the sentence the question matched. What matched: the same action «carry» (+3); the same thing acted on «venom» (+3). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics
Test 4 · wrong ✗
«2 scorpions in the tank. how many legs, not counting the claws»
- 1. 12 — ← Mova's choice · no support
- 2. 8 — no support
- 3. 20 — no support
- 4. 16 — ✓ 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
Test 5 · wrong ✗
«3 cobras and 1 adder. tails, how many»
- 1. 8 — ← Mova's choice · no support
- 2. 4 — ✓ the right answer · no support
- 3. 3 — no support
- 4. 12 — 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 · right ✓
«my brother says a tarantula will kill u in a minute, that's why he won't hold it» What is true?
- 1. Only baby tarantulas are dangerous — score 2
- 2. Tarantulas have no fangs at all — score 2
- 3. Yes, every tarantula can kill a grown-up in about a minute with one bite — score 2
- 4. A bite is usually no worse than a bee sting, though their itchy hairs can annoy — ← Mova's choice · ✓ the right answer · score 8
Why: It took the question to ask why something happens (its cause). It chose option 4 with score 8, against 2 for the next best. Its support: lesson 246, line 14: «A tarantula bite is usually no worse than a bee sting to a person, and many American tarantulas defend themselves by flicking tiny itchy hairs from their botto…», reached through the same lesson line as the sentence the question matched. What matched: the same light verb (be, have, do, get, go) (+3); the same doer «tarantula bite» (+2); the same property (+2); the same circumstance (+1). · the question and its options parsed, with trees and pragmatics
Test 7 · right ✓
What would happen if there were no antivenom?
- 1. Horses would become venomous — no support
- 2. Many more people bitten by snakes would die — ← Mova's choice · ✓ the right answer · score 3
- 3. Snakes would stop being venomous — no support
- 4. Nothing would change — no support
Why: It took the question to ask what happens next. It chose option 2 with score 3, the only option with support. Its support: lesson 166, line 2: «The reasons are simple: most of these animals are shy and bite only when grabbed or stepped on, antivenoms (medicines that undo venom) exist for the worst ones…», reached through what followed the sentence the question matched. What matched: the same doer «antivenoms» (+3). · the question and its options parsed, with trees and pragmatics
Test 8 · right ✓
A cobra spreads its hood and hisses at a dog. Why warn instead of biting at once?
- 1. A fight is risky and venom is costly to make — ← Mova's choice · ✓ the right answer · score 8
- 2. It is asking the dog to play a game of chase — score 2
- 3. Cobras have no venom at all — score 4
- 4. It wants the dog to follow it — score -1
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 8, against 4 for the next best. Its support: lesson 246, line 4: «Many venomous animals warn before they strike, the way a cobra spreads its hood, because a fight is risky and venom is costly to make.», reached through the same lesson line as the sentence the question matched. What matched: the same light verb (be, have, do, get, go) (+3); the same doer «venom» (+2); the same property (+2); its «because» matches the remembered cause (+1). · the question and its options parsed, with trees and pragmatics
Test 9 · right ✓
«komodo dragons kill u with dirty germ spit, everyone knows that» What is more accurate?
- 1. They kill only by breathing fire — score 6
- 2. Yes, only germs and no venom — no support
- 3. They have venom glands in their jaws, found in 2009 — ← Mova's choice · ✓ the right answer · score 8
- 4. They are plant eaters — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 8, against 6 for the next best. Its support: lesson 246, line 16: «Komodo dragons, the biggest lizards alive at up to 3 metres, have venom glands in their jaws; people long thought they killed with germs in dirty spit, until v…», reached through the option's own match among the sentences about the question's things. What matched: the same place «jaws» (+4); the same doer «komodo dragons» (+2); the same thing acted on «venom glands» (+1); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics
Test 10 · wrong ✗
You bite a pufferfish dish and get ill. Was the fish venomous or poisonous?
- 1. Neither, fish cannot harm you — ← Mova's choice · score 4
- 2. Poisonous — ✓ the right answer · no support
- 3. Both, always — no support
- 4. Venomous — no support
Why: It took the question to ask which statement is true. It chose option 1 with score 4, the only option with support. Its support: lesson 152, line 13: «Goldfish must never be let go in the wild, where they can grow huge and harm native fish.», reached through the option's own match among the sentences about the question's things. What matched: the same action «harm» (+4); the same doer «fish» (+2). Against it: one says «not», the other does not (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 11 · right ✓
Why might doctors study cone snail venom?
- 1. It cures colds instantly after one drop — no support
- 2. It makes shells grow on people — score 0
- 3. Pain medicines have been made from it — ← Mova's choice · ✓ the right answer · score 7
- 4. It turns water into fuel for cars and boats — no support
Why: It took the question to ask why something happens (its cause). It chose option 3 with score 7, against 0 for the next best. Its support: lesson 87, line 15: «Antivenom is made by giving horses tiny safe doses of venom and collecting the antibodies their blood makes; some blood pressure medicines were first found by…», reached through the same lesson line as the sentence the question matched. What matched: the same action «make» (+5); the same thing acted on «antivenom» (+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 distinction between venomous and poisonous organisms?
- 1. Venomous organisms are harmful solely when consumed or touched by the predator — ← Mova's choice · no support
- 2. Venom is injected by bite, sting or spine, whereas poison causes harm when ingested or touched — ✓ the right answer · no support
- 3. Poisonous organisms invariably inflict bites — no support
- 4. The terms are wholly synonymous in scientific usage, both denoting any harmful substance — 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 2 · formal language · wrong ✗
Identify the principal method by which antivenom is produced.
- 1. The dilution of venom in sea water — no support
- 2. The administration of small doses of venom to horses and the collection of the resulting antibodies — ✓ the right answer · no support
- 3. The boiling of venom extracted from snakes until all of its harmful properties are destroyed entirely — ← Mova's choice · score 0
- 4. The extraction of juices from tropical plants — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 0, the only option with support. Its support: lesson 188, line 1: «Venomous and poisonous are not the same: a venomous animal pushes its venom into you with a bite or sting, like a snake or a scorpion, while a poisonous one is…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «venom» (+1); the same circumstance (+1). Against it: a different action (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
Select the response consistent with the established facts concerning the conduct of a person who encounters a snake upon a footpath.
- 1. The person should strike the snake repeatedly with a stick — ← Mova's choice · score 6
- 2. The person should run directly towards the snake — score 3
- 3. The person should seize the snake firmly by the tail and remove it from the path — score 1
- 4. The person should remain calm, retreat slowly and permit the snake to depart — ✓ the right answer · score 3
Why: It took the question to ask which statement is true. It chose option 1 with score 6, against 3 for the next best. Its support: lesson 244, line 16: «There is no evidence that people swallow spiders in their sleep; a sleeping person breathes, snores and moves, which spiders avoid, and the «fact» spread witho…», reached through the option's own match among the sentences about the question's things. What matched: the same action «move» (+4); the same doer «sleeping person» (+2). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · wrong ✗
Ascertain the purpose served by the spreading of the hood in the cobra.
- 1. The capture of airborne insects — ← Mova's choice · no support
- 2. The attraction of prey by imitation of a flower — no support
- 3. The regulation of body temperature in the sun — no support
- 4. The issuing of a warning to a potential attacker — ✓ 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
This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/246-defences-venom-in-snakes-jellyfish-scorpions-and-the-platypus/