Growing: teeth, height, hair, nails, from baby to grown-up
Tests: 9 of 11 right · Exam: 1 of 4 right · Kind: plain · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 71 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 ✓
«got my hair cut short so it grows back thicker, everyone knows that» What is right?
- 1. No, cutting hair stops it growing for a month — score 7
- 2. Yes, but only if you cut it at night — score 6
- 3. That's a myth; scissors never touch the follicle where hair grows — ← Mova's choice · ✓ the right answer · score 8
- 4. Yes, each cut doubles the number of hairs on your head, so keep cutting — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 8, against 7 for the next best. Its support: lesson 71, line 9: «Each hair grows from a follicle in the skin, about 1 centimetre a month; we lose about 50 to 100 hairs a day, and cutting hair does not make it grow back thick…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «hair» (+5); the same action «grow» (+4). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics
Test 2 · wrong ✗
In a cartoon, a boy drinks a potion and grows a metre taller overnight. What does real growing look like?
- 1. A whole metre every year until you turn ten, then it stops — ← Mova's choice · no support
- 2. A few centimetres a year, added slowly at the growth plates — ✓ the right answer · no support
- 3. Growing only in summer, never in winter — no support
- 4. Growing only on birthdays, all at once — 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 ✓
«Grandad says he went white overnight when the dog bit him» What is right?
- 1. Yes, but only the hairs on the left side — no support
- 2. Yes, a really big fright bleaches every single hair on the head at once — no support
- 3. Hair already grown cannot lose its colour overnight; grey comes slowly — ← Mova's choice · ✓ the right answer · score 5
- 4. No, his hair turned black overnight instead — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 5, the only option with support. Its support: lesson 70, line 8: «A dog has around 200 to 300 million smell cells against our roughly 5 to 6 million, and a big part of its brain works on smells, so sniffer dogs can find hidde…», reached through the remembered sentence the question matched. What matched: the same thing acted on «million smell cells» (+5). · the question and its options parsed, with trees and pragmatics
Test 4 · wrong ✗
What would happen if you measured an astronaut just back from months in space?
- 1. They would be much shorter for the rest of their life, as space squashes bones — no support
- 2. They would be a few centimetres taller for a while, then shrink back — ✓ the right answer · no support
- 3. They would be exactly the same height as before — no support
- 4. They would keep growing taller on Earth for years — ← Mova's choice · score 3
Why: It took the question to ask what happens next. It chose option 4 with score 3, the only option with support. Its support: lesson 71, line 7: «The soft discs between the bones of the spine get squashed during the day and puff up again at night, so most people are about 1 centimetre taller just after w…», reached through the option's own match among the sentences about the question's things. What matched: the same action «grow» (+2); the same property (+1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 5 · right ✓
«my legs ache every night after football, it's my bones snapping longer innit» What is right?
- 1. Yes, and you should stop playing sport for good — no support
- 2. No, it is your toenails growing too fast — no support
- 3. No, bones grow very slowly; tired muscles may be part of it — ← Mova's choice · ✓ the right answer · score 12
- 4. Yes, bones grow a centimetre every night with a snap, that's the ache — score 9
Why: It took the question to ask which statement is true. It chose option 3 with score 12, against 9 for the next best. Its support: lesson 71, line 11: «Many children aged about 3 to 12 get aching legs at night that are gone by morning; they are called growing pains, but doctors are not sure growth causes them,…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «bones» (+5); the same action «grow» (+4); the same property (+3). · the question and its options parsed, with trees and pragmatics
Test 6 · right ✓
«sod it, I'll stay up till 1, sleep's a waste of time» What is the best answer?
- 1. Sleep does nothing, so staying up is fine — no support
- 2. You only grow while you are awake, running and moving about in the daytime, never at night — no support
- 3. Sleep is when most growth hormone is released and the brain sorts what you learned — ← Mova's choice · ✓ the right answer · score 9
- 4. Grown-ups need more sleep than children anyway — score 7
Why: It took the question to ask which statement is true. It chose option 3 with score 9, against 7 for the next best. Its support: lesson 55, line 15: «Children of 9 to 10 need about 9 to 12 hours of sleep a night; during sleep the body grows and repairs itself, and the brain sorts memories; bright light from…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «brain» (+5); the same action «sort» (+4). · the question and its options parsed, with trees and pragmatics
Test 7 · right ✓
Mum says your new school shoes already pinch after one year. What is the most likely reason?
- 1. Your feet swell from too much sleep — no support
- 2. Toenails grow faster than feet and push the shoes — no support
- 3. Your feet grew a size or more, as children's feet often do — ← Mova's choice · ✓ the right answer · score -1
- 4. Shoes shrink in the wash every week — no support
Why: It took the question to ask what it is done to. It chose option 3 with score -1, the only option with support. Its support: lesson 49, line 4: «Cartoons give every baby a mum who does all the work and a stork that brings it; in real life the seahorse dad carries the eggs, the cuckoo mum tricks other bi…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+3); the same thing acted on «babies» (+1). Against it: a different action (counts against) (-2); a different doer (counts against) (-3). · the question and its options parsed, with trees and pragmatics
Test 8 · right ✓
Why can a foal stand an hour after birth while a human baby takes about a year to walk?
- 1. Human legs have no bones until age one — no support
- 2. Foals are born already one year old — no support
- 3. Human babies are just lazier than foals and would rather be carried about by their parents — no support
- 4. A human baby's brain still has a lot of growing to do and must learn balance — ← 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, the only option with support. Its support: lesson 71, line 13: «Babies usually walk on their own somewhere between about 9 and 18 months, while a foal or a baby giraffe stands within an hour of birth; a human baby's brain s…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «lot» (+4); the same action «grow» (+2); its «because» matches the remembered cause (+2). · the question and its options parsed, with trees and pragmatics
Test 9 · right ✓
«my cousin's voice went squeaky mid-sentence lol is he ill» What is right?
- 1. Yes, his lungs are shrinking as he grows — no support
- 2. No, he is copying a cartoon on purpose — no support
- 3. Yes, a squeaky voice means a bad sore throat — no support
- 4. No, his voice box is growing and the voice jumps about for a while — ← 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, the only option with support. Its support: lesson 71, line 14: «In the teenage years the voice box grows and the vocal folds get longer and thicker, so the voice gets deeper and may jump about for a while; the change is oft…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «voice box» (+5); the same action «grow» (+4). · the question and its options parsed, with trees and pragmatics
Test 10 · right ✓
«baby's head has a soft bit, crap, is it broken??» What is right?
- 1. No, it is a normal gap between skull bones that closes by about two — ← Mova's choice · ✓ the right answer · no support
- 2. No, it is a hard lump that comes with age — no support
- 3. Yes, babies are born with half a skull — no support
- 4. Yes, the baby must have fallen out of bed and cracked its head open — 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 11 · right ✓
«the tooth I lost last week'll grow back, it was a big one» What is right?
- 1. Only front teeth grow back, not the side ones — score 0
- 2. All teeth grow back as long as you brush them twice a day without fail — score 1
- 3. A lost adult tooth never grows back, only baby teeth are replaced — ← Mova's choice · ✓ the right answer · score 3
- 4. Teeth grow back every ten years in grown-ups — score 0
Why: It took the question to ask which statement is true. It chose option 3 with score 3, against 1 for the next best. Its support: lesson 71, line 5: «Children have 20 baby teeth; the grown-up tooth underneath pushes up while the root of the baby tooth dissolves, and adults usually end up with 32 teeth counti…», reached through the option's own match among the sentences about the question's things. What matched: the same action «grow back» (+2); the same doer «lost adult tooth» (+1). · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · wrong ✗
Identify the principal anatomical site at which the long bones of a child increase in length.
- 1. The joint cartilage of the knee exclusively — ← Mova's choice · no support
- 2. The growth plates situated near the extremities of the bone — ✓ the right answer · no support
- 3. The outer surface of the bone along its entire length — no support
- 4. The central portion of the bone shaft — 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 ✓
Select the response consistent with the established facts concerning the observed variation in human stature over the course of a single day.
- 1. Stature is greater upon waking, owing to re-expansion of the spinal discs during rest — ← Mova's choice · ✓ the right answer · no support
- 2. Stature is greater at midday, owing to the warmth of the sun — no support
- 3. Stature is invariable throughout the day and night — no support
- 4. Stature is greater at bedtime, owing to the growth of the bones in the course of the day — 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 · wrong ✗
Which of the following statements most accurately characterises the cutting of hair and nails?
- 1. Cutting causes the follicle to cease production permanently — ← Mova's choice · no support
- 2. The portions removed are living tissue richly supplied with both nerves and blood vessels — no support
- 3. The portions removed are composed of keratin, contain no nerves and are not alive — ✓ the right answer · no support
- 4. Cutting causes subsequent growth to be thicker and more rapid — 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 · wrong ✗
State the number of bones possessed by the adult human skeleton.
- 1. Three hundred and sixty — ← Mova's choice · no support
- 2. Three hundred — no support
- 3. One hundred and six — no support
- 4. Two hundred and six — ✓ 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/71-growing-from-baby-to-grown-up/