Finding Nemo: real blue tangs, sea turtles and reef creatures

Tests: 6 of 11 right · Exam: 2 of 4 right · Kind: plain · Understood: 10 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 133 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 ✓

«4 turtles riding the current, how many flippers is that»

1. 16 — ← Mova's choice · ✓ the right answer · no support
2. 20 — no support
3. 8 — no support
4. 4 — 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 2 · right ✓

«Crush says he's 150 lol is that legit» What is right?

1. Green turtles may live 80 years or more, but 150 is beyond what scientists know — ← Mova's choice · ✓ the right answer · no support
2. Yes, and some live to 1,000 — no support
3. Yes, all turtles live to exactly 150 and then go back to the beach where they hatched — no support
4. No, turtles live only 5 years — 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 ✓

«Squirt hides in his shell when scared, all turtles do it» What is right?

1. Yes, every turtle hides its head when a shark swims by — score 3
2. Yes, but only the babies — no support
3. Sea turtles cannot pull their heads in at all — ← Mova's choice · ✓ the right answer · score 5
4. No, only their tails go in — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, against 3 for the next best. Its support: lesson 133, line 12: «Sea turtles cannot pull their heads or flippers into their shells, because their streamlined swimming shells have no room inside.», reached through the option's own match among the sentences about the question's things. What matched: the same action «pull» (+2); the same thing acted on «heads» (+2); the same doer «sea turtles» (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

In Tom and Jerry, Tom gets stung by a jellyfish and lights up like a bulb. What really happens with a jellyfish sting?

1. Harpoon cells fire a painful sting into the skin; nothing lights up — ✓ the right answer · no support
2. The sting gives you a burst of electric power, so you glow for a few minutes — no support
3. The sting turns your skin see-through — no support
4. Nothing, jellyfish never sting people — ← Mova's choice · score 1

Why: It took the question to ask which statement is true. It chose option 4 with score 1, the only option with support. Its support: lesson 133, line 15: «Jellyfish sting with tiny harpoon cells in their tentacles that fire when touched, and they have no brain, heart or bones and are mostly water.», reached through the option's own match among the sentences about the question's things. What matched: the same action «sting» (+2); the same doer «jellyfish» (+1). Against it: one says «not», the other does not (counts against) (-2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

«Dory's blue so the yellow one at the aquarium can't be a blue tang, duh» What is right?

1. It must be a sick blue tang — no support
2. Yellow means it is a clownfish — no support
3. Young blue tangs are bright yellow before they turn blue — ✓ the right answer · score 5
4. Right, blue tangs are bright blue from the day they hatch — ← Mova's choice · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, against 5 for the next best. Its support: lesson 133, line 5: «Adult blue tangs are blue with black markings and a yellow tail, but young ones are bright yellow, and blue tangs can turn paler at night or when scared.», 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 «adult blue tangs» (+1). The right option, 3, scored 5. · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

What would happen if a beach hotel kept its bright lights on all night in hatching season?

1. The hatchlings would find the sea faster, as the lights show them the way — ← Mova's choice · score 0
2. Nothing would change at all — no support
3. Hatchlings could crawl towards the lights instead of the sea — ✓ the right answer · no support
4. The turtles would stay in the nest for a year — no support

Why: It took the question to ask what happens next. It chose option 1 with score 0, the only option with support. Its support: lesson 133, line 11: «Turtle hatchlings climb out of their nests at night and head for the brightest horizon, usually the sea; street and hotel lights can lead them the wrong way.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «hatchlings» (+1). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

«chucked my plastic bag in the sea, it'll just float, no biggie» Why is it a problem?

1. It will turn into a jellyfish after a few weeks in salty water — score 2
2. The sea dissolves it in a day — no support
3. It will help fish build nests — no support
4. A turtle may take it for a jellyfish, eat it and get its stomach blocked — ← Mova's choice · ✓ the right answer · score 4

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 4, against 2 for the next best. Its support: lesson 133, line 13: «Sea turtles eat jellyfish, and floating plastic bags look like jellyfish, so turtles sometimes swallow plastic, which can block their stomachs.», reached through the same lesson line as the sentence the question matched. What matched: the same action «eat» (+4); the same doer «sea turtles» (+1). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

«got stung on the beach, jellyfish bit me with its teeth» What is right?

1. Yes, jellyfish have rows of tiny sharp teeth under their soft bell — no support
2. Yes, they bite with their heads — ← Mova's choice · score 3
3. No, jellyfish only scratch — no support
4. Jellyfish have no teeth; tiny harpoon cells in the tentacles stung you — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 3, the only option with support. Its support: lesson 133, line 15: «Jellyfish sting with tiny harpoon cells in their tentacles that fire when touched, and they have no brain, heart or bones and are mostly water.», reached through the option's own match among the sentences about the question's things. What matched: the same action «sting» (+2); the same doer «jellyfish» (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · right ✓

«pufferfish are cute, gonna cook one for tea» What is the best answer?

1. Fine, they are completely safe to eat once they have blown up — score 3
2. Fine, the poison is only in the spines — no support
3. Fine, if you boil it twice — no support
4. No, many contain a strong poison; in Japan only trained cooks prepare them — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, against 3 for the next best. Its support: lesson 133, line 16: «Pufferfish gulp water and swell into a spiky ball when scared, which makes them hard to swallow, and many contain a strong poison, so in Japan only specially t…», reached through the remembered sentence the question matched. What matched: the same thing acted on «pufferfish» (+5); the same action «make» (+2). · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

«ray's just a flat fish with bones like a cod» What is right?

1. Yes, rays have exactly the same hard bones as cod and other fish — ← Mova's choice · no support
2. Rays have no skeleton at all — no support
3. Rays are a kind of turtle — no support
4. Rays are flat shark relatives with skeletons of cartilage — ✓ the right answer · 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 · right ✓

«why do blue tangs gang up in big groups, weird» What is right?

1. They are scared of the dark — no support
2. Together they can push past fish guarding their own algae patches — ← Mova's choice · ✓ the right answer · score 7
3. They are waiting for a current — no support
4. They are all lost like Dory and are looking for their families on the reef — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 7, the only option with support. Its support: lesson 133, line 7: «Blue tangs often feed in groups, grazing algae off coral and rocks, which helps them push past fish guarding their own algae patches and stops algae smothering…», reached through the same lesson line as the sentence the question matched. What matched: the same action «push» (+4); the same circumstance (+2); the same doer «tangs» (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Select the response consistent with the established facts concerning the memory of the blue tang.

1. The species retains no information whatsoever after hatching — ← Mova's choice · no support
2. The species is incapable of retaining any information beyond several seconds — no support
3. No particular deficiency of memory is known; most fish retain information for weeks or months — ✓ the right answer · no support
4. The species retains every event of its life without exception — 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 · right ✓

Identify the principal reason for which artificial illumination is reduced upon certain beaches during the hatching season of sea turtles.

1. Hatchlings orient towards the brightest horizon and may be drawn away from the sea by such lights — ← Mova's choice · ✓ the right answer · no support
2. Illumination causes adult turtles to abandon their nests — no support
3. Illumination attracts jellyfish which prey upon hatchlings — no support
4. Illumination elevates the temperature of the sand to a degree that is harmful to the eggs beneath it — 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 ✓

Which of the following statements most accurately characterises the capacity of a sea turtle to withdraw into its shell?

1. It is unable to withdraw either its head or its flippers into the shell — ← Mova's choice · ✓ the right answer · score 2
2. It is able to withdraw its head only during sleep — no support
3. It is able to withdraw its whole body as a land tortoise does — no support
4. It is able to withdraw its head but not its flippers — no support

Why: It took the question to ask who or what does it. It chose option 1 with score 2, the only option with support. Its support: lesson 133, line 4: «Sea turtles cannot pull their heads into their shells like Squirt does, and to a hungry turtle a floating plastic bag looks just like a jellyfish.», reached through the remembered sentence the question matched. What matched: the same thing acted on «heads» (+3); the same place «shells» (+2). Against it: a different action (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain the reason for which sea turtles are observed to ingest floating plastic bags.

1. Sea turtles employ such bags in the construction of nests — score 2
2. Such bags possess a sweet taste attractive to sea turtles — no support
3. Such bags resemble jellyfish, which form part of the diet of sea turtles — ✓ the right answer · no support
4. Sea turtles mistake such bags for beds of seaweed — ← Mova's choice · score 5

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 77, line 10: «Sea turtles, especially leatherbacks that eat jellyfish, can mistake floating plastic bags for food; plastic can block the stomach so the turtle feels full and…», reached through the option's own match among the sentences about the question's things. What matched: the same action «mistake» (+2); the same thing acted on «floating plastic bags» (+2); the same doer «sea turtles» (+1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/133-finding-nemo-dory-turtles-and-the-reef/