--- title: Farm animals by numbers: stomachs, hooves, toes, eggs and litres — how Mova does on the tests · Biology description: Lesson 350 of the biology course of Mova's primary school: 6 of 12 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/school-run/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/) [home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/) / 350 # Farm animals by numbers: stomachs, hooves, toes, eggs and litres **Tests:** 6 of 12 right · **Exam:** 1 of 4 right · **Kind:** ★★★ · **Understood:** 11 of 16 · **Run:** 2026-10-18, commit `f3c23ea72` Lesson 350 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](https://md.mova.elamur.ai/free/en/corpora/school/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/). Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/). ### Test 1 · ★★★ · wrong ✗ {#t1} In the film Barnyard, the male cows have big udders and walk on their back legs. What do the numbers say? - **1.** Male cows have four udders each and give more milk than the females do — score 13 - **2.** Only cows that have calved make milk, and real cattle walk on four feet with two toes each — **✓ the right answer** · score 10 - **3.** Cattle walk on two toes in total — **← Mova's choice** · score 14 - **4.** Nothing is wrong — no support **Why:** It took the question to ask what it is done to. It chose option 3 with score 14, against 13 for the next best. Its support: lesson 350, line 6: «Cows, sheep, goats and pigs walk on two toes, called cloven hooves, with two smaller dewclaws higher up at the back, while a horse walks on one toe on each foo…», reached through the same lesson line as the sentence the question matched. What matched: the same action «walk» (+6); the same doer «horse» (+4); the same place «one toe» (+4). The right option, 2, scored 10. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t1/) ### Test 2 · ★★★ · right ✓ {#t2} In a Tom and Jerry style cartoon, a cow waves hooves with five fingers each. Count it right: how many toes does a real cow stand on altogether? - **1.** 8 — **← Mova's choice** · **✓ the right answer** · no support - **2.** 4 — no support - **3.** 16 — no support - **4.** 20 — 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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t2/) ### Test 3 · ★★★ · wrong ✗ {#t3} Count them: 3 hens and 1 Silkie scratch in the yard. How many toes are there altogether? - **1.** 32 — **← Mova's choice** · no support - **2.** 40 — no support - **3.** 16 — no support - **4.** 34 — **✓ 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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t3/) ### Test 4 · ★★★ · wrong ✗ {#t4} Count them: a farmer has 2 horses and 3 cows. How many tails, and how many toes do they stand on in total? - **1.** 5 tails and 40 toes — **← Mova's choice** · score -2 - **2.** 10 tails and 32 toes — score -2 - **3.** 5 tails and 32 toes — **✓ the right answer** · score -2 - **4.** 5 tails and 20 toes — score -2 **Why:** It took the question to ask what it is done to. 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 156, line 14: «Only monkeys of the Americas have gripping tails; no monkey of Africa or Asia can hang by its tail.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «monkeys» (+1). Against it: it fills the role the question asks for (-1); the same thing acted on «gripping tails» (-2). The right option, 3, scored -2. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t4/) ### Test 5 · ★★★ · wrong ✗ {#t5} «sheep's had triplets, she'll be fine, she's a sheep» Why might triplets be harder for a ewe? - **1.** Ewes do not feed their lambs — **← Mova's choice** · score -2 - **2.** She has six teats, which is far too many for her to manage at once — no support - **3.** She has only two teats, so one lamb must wait or be bottle-fed — **✓ the right answer** · no support - **4.** Triplets are always too big to stand — no support **Why:** It took the question to ask why something happens (its cause). It chose option 1 with score -2, the only option with support. Its support: lesson 293, line 3: «After the dog came sheep and goats, then cattle and pigs, about 10,000 years ago; later horses, camels, llamas and chickens. They gave milk, wool, meat, eggs a…», reached through the option's own match among the sentences about the question's things. Against it: the same doer «sheep» (-1); one says «not», the other does not (counts against) (-1). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t5/) ### Test 6 · ★★★ · right ✓ {#t6} «my goat ate a whole can of beans, tin and all» What really happened? - **1.** It nibbled the paper label, not the tin — **← Mova's choice** · **✓ the right answer** · score 5 - **2.** Goats can digest metal — no support - **3.** Goats only eat tins, not grass — score 3 - **4.** It swallowed the tin whole and was fine — score 2 **Why:** It took the question to ask which statement is true. It chose option 1 with score 5, against 3 for the next best. Its support: lesson 96, line 5: «Goats are curious browsers that nibble a bit of everything, but they do not really eat tin cans; they nibble paper labels and test things with their lips.», reached through the same lesson line as the sentence the question matched. What matched: the same action «nibble» (+4); the same thing acted on «paper labels» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t6/) ### Test 7 · ★★★ · wrong ✗ {#t7} How much milk would 5 goats giving 3 litres a day each give in a week? - **1.** 21 litres — **← Mova's choice** · no support - **2.** 105 litres — **✓ the right answer** · no support - **3.** 15 litres — no support - **4.** 35 litres — 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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t7/) ### Test 8 · ★★★ · right ✓ {#t8} «sheep are thick, can't tell one face from another» What did a study find? - **1.** Sheep can recognise about 50 sheep faces and remember them for years — **← Mova's choice** · **✓ the right answer** · score 11 - **2.** Sheep cannot see faces at all, only the colour of the wool — score 8 - **3.** Sheep recognise only their own reflection — score 6 - **4.** Sheep remember faces for one minute — score 8 **Why:** It took the question to ask who or what does it. It chose option 1 with score 11, against 8 for the next best. Its support: lesson 350, line 11: «A study found sheep can recognise up to about 50 sheep faces and remember them for years.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «sheep» (+3); it fills the role the question asks for (+3); the same action «remember» (+2); the same doer «sheep» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t8/) ### Test 9 · ★★★ · right ✓ {#t9} Why would you keep laying ducks in their house until mid-morning? - **1.** Ducks sleep until noon — no support - **2.** They lay early in the morning, so the eggs end up in the house, not lost in the field — **← Mova's choice** · **✓ the right answer** · score 0 - **3.** The eggs hatch if laid outside — no support - **4.** Ducks are afraid of the morning sun — no support **Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 0, the only option with support. Its support: lesson 350, line 9: «Duck eggs are larger with thicker shells and bigger yolks, some breeds like the Khaki Campbell lay nearly 300 a year, and ducks lay early in the morning, so th…», reached through the option's own match among the sentences about the question's things. What matched: the same property (+1). Against it: the same doer «ducks» (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t9/) ### Test 10 · ★★★ · right ✓ {#t10} «horse's teeth just wear away to nothing, poor thing» Why does that not usually happen? - **1.** Horses do not chew their food — no support - **2.** Horses' teeth keep growing out slowly as they wear down — **← Mova's choice** · **✓ the right answer** · score 8 - **3.** Horses lose all their teeth and grow a whole new set every year — score -1 - **4.** Horses' teeth are made of metal — score 1 **Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 8, against 1 for the next best. Its support: lesson 120, line 9: «Mice have four front teeth, the incisors, which keep growing all their lives and are worn down by gnawing; mice can gnaw wood, plastic and even electric cables…», reached through the same lesson line as the sentence the question matched. What matched: the same action «keep» (+5); the same doer «four front teeth» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t10/) ### Test 11 · ★★★ · wrong ✗ {#t11} Count them: a sow has 11 piglets and 14 teats. If each piglet keeps one teat, how many teats are left free? - **1.** 25 — **← Mova's choice** · score 5 - **2.** 11 — score 5 - **3.** 3 — **✓ the right answer** · score 5 - **4.** 0 — score 5 **Why:** It took the question to ask what it is done to. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 210, line 10: «A sow, a mother pig, can have a litter of a dozen piglets or more born together; each piglet picks a teat to suck milk from and keeps it, and piglets know thei…», reached through the remembered sentence the question matched. What matched: the same action «keep» (+4); the same doer «piglet» (+1); a different thing acted on (counts against) (+1). Against it: one says «not», the other does not (counts against) (-1). The right option, 3, scored 5. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t11/) ### Test 12 · ★★★ · right ✓ {#t12} A boy wants a farm animal that could be his friend the longest. Which should he choose? - **1.** A horse, which can live about 25 to 30 years — **← Mova's choice** · **✓ the right answer** · score 10 - **2.** A goat, which can live about 100 years — score 2 - **3.** A hen, which can live about 50 years — score 2 - **4.** A sheep, which can live about 40 years — score 10 **Why:** It took the question to ask who or what does it. It chose option 1 with score 10, tied with another option at 10 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 312, line 5: «The blue whale may be the biggest animal that has ever lived, up to about 30 metres long; its heart weighs about 180 kilograms and on a dive can beat as slowly…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «biggest animal» (+3); it fills the role the question asks for (+3); the same action «live» (+2); the same doer «biggest animal» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/t12/) ### Exam question 1 · formal language · right ✓ {#e1} Identify the means by which a cow, lacking upper incisors, severs grass. - **1.** The tongue draws the grass against a hard dental pad, whereupon it is torn — **← Mova's choice** · **✓ the right answer** · score 2 - **2.** The grass is cut by the hooves prior to consumption — score 2 - **3.** The grass is swallowed whole without being severed — score 2 - **4.** The grass is severed by sharp upper fangs — no support **Why:** It took the question to ask which statement is true. 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 207, line 15: «Horse teeth keep growing out of the jaw and are worn down by grinding grass, so their shape tells roughly how old a horse is; that is why people say «don't loo…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2); the same thing acted on «grass» (+1). Against it: a different doer (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/e1/) ### Exam question 2 · formal language · wrong ✗ {#e2} State the number of toes upon which a horse bears its weight on each foot. - **1.** Three — **← Mova's choice** · no support - **2.** Two — no support - **3.** One — **✓ the right answer** · no support - **4.** Four — 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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/e2/) ### Exam question 3 · formal language · wrong ✗ {#e3} Which of the following statements most accurately characterises the relationship between the number of teats and the size of the litter in farm animals? - **1.** All farm animals possess four teats irrespective of litter size — score 5 - **2.** The ewe possesses fourteen teats and the sow two — score 4 - **3.** The number of teats bears no relation whatsoever to the offspring — **← Mova's choice** · score 8 - **4.** The ewe possesses two teats and twins are most common, whereas the sow possesses approximately fourteen teats for a litter of eight to twelve — **✓ the right answer** · score 4 **Why:** It took the question to ask who or what does it. It chose option 3 with score 8, against 5 for the next best. Its support: lesson 346, line 10: «Most oranges have about ten segments, each packed with tiny juice bags that grew from hairs inside the flower, but the number changes from orange to orange.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «number» (+2); a different action (counts against) (+2). The right option, 4, scored 4. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/e3/) ### Exam question 4 · formal language · wrong ✗ {#e4} Compute the aggregate number of stomach chambers possessed by two cows and one alpaca. - **1.** Twelve — **← Mova's choice** · no support - **2.** Ten — no support - **3.** Nine — no support - **4.** Eleven — **✓ 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](https://md.mova.elamur.ai/free/en/corpora/questions/biology/350-farm-animals-by-numbers-stomachs-hooves-toes-eggs-and-litres/e4/) - ← previous: [349. A year on a farm: lambing, haymaking, harvest an…](https://md.mova.elamur.ai/free/en/school-run/biology/349-a-year-on-a-farm-lambing-haymaking-harvest-and-winter-feeding/) - next →: [351. Teeth: baby teeth, grown-up teeth and wobbly teeth](https://md.mova.elamur.ai/free/en/school-run/biology/351-teeth-baby-teeth-grown-up-teeth-and-wobbly-teeth/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/)