The rainforest from below: understorey and forest floor
Tests: 3 of 11 right · Exam: 2 of 4 right · Kind: ★ · Understood: 5 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 3 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 ✓
«centipede means 100 legs so it's got 100, duh» What is right?
- 1. Yes, 50 on each side — no support
- 2. Yes, every centipede has exactly 100, that is why it has the name — no support
- 3. No, they all have exactly 1,000 — no support
- 4. No, centipedes always have an odd number of pairs, so never exactly 100 — ← Mova's choice · ✓ the right answer · score 6
Why: It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 3, line 5: «In cartoons a centipede always has exactly 100 legs and wears 100 shoes; a real centipede never has exactly 100 legs, because it always has an odd number of pa…», reached through the remembered sentence the question matched. What matched: the same doer «centipede» (+4); the same property (+2); the same light verb (be, have, do, get, go) (+2). Against it: a different thing acted on (counts against) (-2). · the question and its options parsed, with trees and pragmatics
Test 2 · ★ · wrong ✗
Count a centipede with 21 pairs of legs. How many legs is that?
- 1. 100 — ← Mova's choice · no support
- 2. 42 — ✓ the right answer · no support
- 3. 40 — no support
- 4. 21 — 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 zoo frog of the same kind as a deadly wild poison dart frog has been fed only on fruit flies. Why is it not poisonous?
- 1. Poison dart frogs are never poisonous at all — score 4
- 2. Zoo frogs lose their colour and their poison — score 3
- 3. It does not get the ants and mites that its poison comes from — ← Mova's choice · ✓ the right answer · score 8
- 4. The keepers wash the poison off its skin each morning with warm water — no support
Why: It took the question to ask why something happens (its cause). It chose option 3 with score 8, against 4 for the next best. Its support: lesson 3, line 9: «Poison dart frogs warn predators with bright colours, and their poison comes mainly from the ants and mites they eat, so zoo-raised frogs fed on fruit flies ar…», reached through the cause of the sentence the question matched. What matched: the same action «come» (+4); the same doer «poison» (+4). · the question and its options parsed, with trees and pragmatics
Test 4 · ★ · wrong ✗
«wicked, a red frog, gonna pick it up» Which is the best answer?
- 1. Only touch it with one finger — ← Mova's choice · no support
- 2. Fine, all frogs are safe to hold — no support
- 3. Don't, never touch a wild brightly coloured frog — ✓ the right answer · no support
- 4. Fine, just wash your hands well afterwards with soap — 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 · ★ · right ✓
What would happen to a leafcutter colony if all its fungus died?
- 1. Nothing, the ants would just eat the leaves — score 0
- 2. The colony would go hungry, because the fungus is its food — ← Mova's choice · ✓ the right answer · score 4
- 3. The ants would start eating soil — score 0
- 4. The queen would grow new fungus from her wings and feed the whole colony — score 3
Why: It took the question to ask what happens next. It chose option 2 with score 4, against 3 for the next best. Its support: lesson 3, line 8: «Leafcutter ants do not eat the leaves they carry; they chew them into a mulch to grow a fungus garden, and the fungus feeds a colony that can hold several mill…», reached through what followed the sentence the question matched. What matched: the same doer «colony» (+4). · the question and its options parsed, with trees and pragmatics
Test 6 · ★ · wrong ✗
«a tapir's just a pig with a nose, innit» What is right?
- 1. Yes, it is a wild pig with a long nose — ← Mova's choice · no support
- 2. Yes, it is a baby elephant — no support
- 3. No, its closest relatives are horses and rhinos — ✓ the right answer · no support
- 4. No, it is a kind of anteater — 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 7 · ★ · wrong ✗
«they chopped the jungle and the farm went rubbish in 3 years, why??» Which is the best answer?
- 1. The farm was cursed by the forest spirits — ← Mova's choice · no support
- 2. The nutrients were in the trees, and the thin soil soon ran out — ✓ the right answer · no support
- 3. The rain stopped for ever after the trees were cut down — no support
- 4. The farmers used the wrong tractor — 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 8 · ★ · wrong ✗
«okapi's a zebra cos stripes» What is right?
- 1. Yes, it is a zebra that lives in forests — ← Mova's choice · no support
- 2. Yes, a zebra crossed with a horse — no support
- 3. No, it is a kind of deer — no support
- 4. No, it is the giraffe's closest relative, with stripes only on its legs — ✓ 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 9 · ★ · wrong ✗
Kai's sister says a cassowary is just a big fluffy bird and she wants a selfie with it. What is the best answer?
- 1. It is safe, because flightless birds never fight anyone — ← Mova's choice · no support
- 2. Fine, if she offers it some bread — no support
- 3. Keep well away: its dagger-like claw can badly hurt people — ✓ the right answer · no support
- 4. Only run past it quickly — 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 10 · ★ · wrong ✗
«why's the ground so bare under all them massive trees?» Which is the best answer?
- 1. Animals eat everything that grows there — ← Mova's choice · no support
- 2. The canopy takes almost all the light, so little can grow below — ✓ the right answer · no support
- 3. Trees poison the ground under them so that no other plant can ever grow there — no support
- 4. The floor is too wet to grow anything — 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 ✗
«how does a jaguar kill a turtle, the shell's well hard» Which is closest to the truth?
- 1. Its very strong bite can break through the shell — ✓ the right answer · no support
- 2. It waits for the turtle to come out of its shell — no support
- 3. Jaguars never eat turtles — ← Mova's choice · score 6
- 4. It rolls the turtle into a river — no support
Why: It took the question to ask what something is like. It chose option 3 with score 6, the only option with support. Its support: lesson 3, line 7: «Jaguars rest in trees, swim well and hunt capybaras, caimans, turtles and fish; they are the only big cats in the Americas and have the strongest bite for thei…», reached through the remembered sentence the question matched. What matched: the same thing acted on «capybaras» (+5); the same doer «jaguars» (+3). Against it: a different action (counts against) (-2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · right ✓
Which of the following statements most accurately characterises the illumination of the rainforest floor?
- 1. Approximately one half of incident sunlight reaches the floor — score 6
- 2. No sunlight whatsoever reaches the floor at any location — score 6
- 3. Approximately two per cent of incident sunlight penetrates to the floor of a dense rainforest — ← Mova's choice · ✓ the right answer · score 12
- 4. The floor of the rainforest receives the entirety of incident sunlight through gaps in the foliage — no support
Why: It took the question to ask who or what does it. It chose option 3 with score 12, against 6 for the next best. Its support: lesson 3, line 6: «Only about 2 per cent of sunlight reaches the floor of a thick rainforest, so few plants grow there except where a big tree has fallen.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same doer «2 per cent» (+4); the same circumstance (+4). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · wrong ✗
Identify the source of the food upon which a colony of leafcutter ants subsists.
- 1. The sap of the trees from which the leaves are cut — ← Mova's choice · no support
- 2. The leaves themselves, consumed immediately upon collection by the workers — no support
- 3. A fungus cultivated upon chewed leaf material within the nest — ✓ the right answer · no support
- 4. Other insects captured upon the forest floor — 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 ✓
Select the response consistent with the established facts concerning the toxicity of poison dart frogs.
- 1. The toxins are derived principally from ants and mites consumed in the wild, wherefore captive-reared specimens are not toxic — ← Mova's choice · ✓ the right answer · no support
- 2. All specimens are equally toxic irrespective of their diet, whether reared in the wild or maintained in captivity by keepers — no support
- 3. No species of poison dart frog possesses any toxin — no support
- 4. The toxins are manufactured entirely from sunlight — 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
Exam question 4 · formal language · wrong ✗
Ascertain the number of legs possessed by a centipede bearing twenty-three pairs.
- 1. Forty-four — ← Mova's choice · no support
- 2. Twenty-three — no support
- 3. Forty-six — ✓ the right answer · no support
- 4. One hundred — 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/3-the-rainforest-from-below/