How close are apes to us?

Tests: 6 of 12 right · Exam: 1 of 4 right · Kind: ★★★ · Understood: 9 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 17 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 · ★★★ · wrong ✗

my uncle says if we came from monkeys why are there still monkeys. what's the answer

1. Monkeys are slowly turning into people right now — ← Mova's choice · no support
2. We did not come from today's apes; we share ancestors with them, and both lines changed — ✓ the right answer · no support
3. He is right, so evolution is wrong — no support
4. The monkeys left behind were the lazy ones — 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 · ★★★ · wrong ✗

A friend says humans and chimps have 99 percent the same DNA, so a chimp is 99 percent human. What is wrong with that?

1. Chimps share only 1 percent of our DNA — ← Mova's choice · no support
2. Small DNA differences can make big differences in bodies and brains — ✓ the right answer · no support
3. DNA has nothing to do with bodies — no support
4. Nothing, a chimp really is 99 percent a person, just in a hairy body — 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 cartoon shows a line of apes standing up one by one and turning into a man. What is closer to the truth?

1. Humans and apes branch from shared ancestors, like a family tree, not a ladder — ← Mova's choice · ✓ the right answer · score 1
2. Every chimp will one day become a man — no support
3. Apes stood up because they were cold — no support
4. Gorillas slowly turned into chimps, and then chimps turned into people — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 1, the only option with support. Its support: lesson 17, line 2: «Humans did not come from chimps; chimps and humans are both great apes that changed in different ways from one shared ancestor about 6 to 7 million years ago,…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2); the same doer «great apes» (+1). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 4 · ★★★ · right ✓

If two of your chromosomes had never joined long ago, how many might humans have today?

1. 46, nothing would change — no support
2. 48, like the other great apes — ← Mova's choice · ✓ the right answer · score 5
3. 44, two fewer — no support
4. 23, half as many — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 5, the only option with support. Its support: lesson 17, line 9: «DNA is packed into tiny threads called chromosomes; human cells have 46 chromosomes and great apes have 48, because long ago two ape chromosomes joined into on…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+3); the same thing acted on «48» (+2); the same light verb (be, have, do, get, go) (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★★ · wrong ✗

Count it: a chimp has 2 hands and 2 grasping feet. How many hand-like grippers is that?

1. 6 — ← Mova's choice · no support
2. 5 — no support
3. 4 — ✓ the right answer · no support
4. 2 — 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 ✗

A mother chimp and her baby, how many hearts and how many brains?

1. 4 hearts and only 2 brains — no support
2. 2 hearts and only 1 brain — no support
3. Only 1 heart and 2 brains — ← Mova's choice · score 10
4. 2 hearts and 2 brains — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 10, the only option with support. Its support: lesson 11, line 13: «Herons, mudskippers and other animals with backbones each have just one heart.», reached through the remembered sentence the question matched. What matched: the number the lesson gave for it (+6); the same thing acted on «one heart» (+4). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★★ · right ✓

shut up, chimps are just dumb animals, they can't do anything we can't

1. True, but only in zoos, where they are bored and lazy all day long — no support
2. True, apes are worse at everything — score 5
3. Wrong: chimps can read and write books — no support
4. Wrong: Ayumu beat grown-ups at a number memory game — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, against 5 for the next best. Its support: lesson 17, line 5: «Apes are not just worse humans: a young chimp called Ayumu beat grown-up people at a quick number memory game, and chimp groups even have their own traditions.», reached through the remembered sentence the question matched. What matched: the same doer «young chimp» (+4); the same place «quick memory game» (+4); the same action «beat» (+3). Against it: a different thing acted on (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 8 · ★★★ · right ✓

Why does the brain cost the body so much?

1. It never sleeps, even at night, so it burns up the body's fat — score 1
2. It needs its own heart to run it — score 7
3. It weighs as much as both legs — score 1
4. It uses about a fifth of the body's energy at rest — ← Mova's choice · ✓ the right answer · score 10

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 10, against 7 for the next best. Its support: lesson 17, line 13: «The human brain is about three times as big as a chimp's and uses about a fifth of the body's energy at rest.», reached through the same lesson line as the sentence the question matched. What matched: the same action «use» (+3); the same doer «human brain» (+3); the same place «rest» (+2); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★★ · wrong ✗

What would happen if a young chimp grew up with no older chimps to copy?

1. It would know everything by instinct, so it would crack nuts anyway — ← Mova's choice · score 2
2. It would learn to talk instead — score 2
3. It might never learn its group's traditions, like nut cracking — ✓ the right answer · score 2
4. It would invent writing — score 2

Why: It took the question to ask what happens next. It chose option 1 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 16, line 12: «Gorillas and chimps walk on all fours leaning on their knuckles, while orangutans walk on their fists or the sides of their hands.», reached through what followed the sentence the question matched. What matched: the same doer «gorillas» (+4). Against it: a different action (counts against) (-2). The right option, 3, scored 2. · the question and its options parsed, with trees and pragmatics

Test 10 · ★★★ · right ✓

Lucy's arms were long and her legs were made for walking. What does that tell us?

1. She swung through trees and never walked — no support
2. She walked upright but still climbed trees — ← Mova's choice · ✓ the right answer · score 2
3. She walked on her knuckles like a gorilla — no support
4. She swam more than she walked — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 2, the only option with support. Its support: lesson 17, line 4: «The differences matter too: we walk upright all the time, our brain is about three times bigger, we speak, and we lost most of our fur and learned to sweat, so…», reached through the option's own match among the sentences about the question's things. What matched: the same action «walk» (+2); the same property (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 11 · ★★★ · wrong ✗

Why can a human run a marathon in the heat when a chimp could not?

1. We have more legs than a chimp — ← Mova's choice · no support
2. We breathe through our skin, which cools us down as we run along — no support
3. We sweat a lot and have little fur, so we stay cool — ✓ the right answer · no support
4. Chimps are allergic to running — 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 12 · ★★★ · right ✓

A newborn chimp grips its mother's fur on day one. Can a newborn human baby do that and ride along?

1. No, because human babies have no hands — no support
2. Yes, human babies ride on their mothers' backs from day one — no support
3. No, human babies are even more helpless at birth — ← Mova's choice · ✓ the right answer · score 12
4. Yes, but only with their feet — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 12, the only option with support. Its support: lesson 17, line 11: «Baby chimps drink their mother's milk for about 4 or 5 years; big brains take a long time to grow and learn, so apes and humans have long childhoods, and human…», reached through the remembered sentence the question matched. What matched: the same doer «human babies» (+4); the same place «birth» (+4); 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 ✗

Identify the statement most consistent with the established understanding of the relationship between humans and chimpanzees.

1. Chimpanzees are descended directly from present-day humans — ← Mova's choice · no support
2. No relationship of any kind exists between the two species — no support
3. Both descend from a common ancestor that lived some six to seven million years ago — ✓ the right answer · no support
4. Humans are descended directly from the chimpanzees living in Africa at the present day — 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 2 · formal language · wrong ✗

Ascertain the number of chromosomes contained in a human cell and in a cell of a chimpanzee respectively.

1. Forty-eight and forty-six respectively — ← Mova's choice · no support
2. Twenty-three and twenty-four respectively — no support
3. Forty-six in each instance — no support
4. Forty-six and forty-eight respectively — ✓ 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 ✓

Which of the following statements most accurately characterises the fossil hereinafter referred to as Lucy?

1. The skeleton of a modern chimpanzee recovered from a zoological garden — no support
2. An early human relative of some 3.2 million years ago that walked upright — ← Mova's choice · ✓ the right answer · score 2
3. The remains of a dinosaur contemporaneous with early humans — no support
4. A fossil gorilla incapable of upright locomotion — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 2, the only option with support. Its support: lesson 17, line 16: «Lucy is a skeleton of an early human relative, Australopithecus afarensis, found in Ethiopia in 1974; she lived about 3.2 million years ago, walked upright and…», reached through the same lesson line as the sentence the question matched. What matched: the same action «walk» (+2); the same property (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Select the principal reason for which the great apes are unable to articulate words in the manner of humans.

1. They possess no capacity whatsoever for learning, and therefore cannot acquire speech — ← Mova's choice · no support
2. Their throat, tongue and control of breathing are differently constituted — ✓ the right answer · no support
3. Their sense of hearing is wholly absent — no support
4. They possess no vocal apparatus of any kind — 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

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