--- title: Mammal giants of the past: Paraceratherium, Diprotodon, the giant be… — how Mova does on the tests · Biology description: Lesson 384 of the biology course of Mova's primary school: 1 of 11 tests right, exam 2 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/) [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/) / 384 # Mammal giants of the past: Paraceratherium, Diprotodon, the giant beaver and Gigantopithecus **Tests:** 1 of 11 right · **Exam:** 2 of 4 right · **Kind:** ★ · **Understood:** 10 of 15 · **Run:** 2026-10-18, commit `f3c23ea72` Lesson 384 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/). 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/). ### Test 1 · ★ · wrong ✗ {#t1} Count them: a rhino has 3 toes on each foot. How many toes on all four feet? - **1.** Four — **← Mova's choice** · no support - **2.** Twelve — **✓ the right answer** · no support - **3.** Sixteen — no support - **4.** Three — 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t1/) ### Test 2 · ★ · wrong ✗ {#t2} Count them: 2 horses and 1 rhino. How many toes touch the ground in all? - **1.** Sixteen — **← Mova's choice** · score 9 - **2.** Twenty — **✓ the right answer** · score 9 - **3.** Eight — score 9 - **4.** Twelve — score 9 **Why:** It took the question to ask what it is done to. It chose option 1 with score 9, tied with another option at 9 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 219, line 11: «Only the caterpillars of a few kinds of moth eat wool clothes; most moths never touch clothes at all.», reached through the remembered sentence the question matched. What matched: the same place «all» (+6); the same action «touch» (+4). Against it: one says «not», the other does not (counts against) (-1). The right option, 2, scored 9. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t2/) ### Test 3 · ★ · wrong ✗ {#t3} «Bigfoot's real, that giant ape is just hiding» What would you need before believing it? - **1.** A big footprint in mud — **← Mova's choice** · no support - **2.** A story you heard twice — no support - **3.** Real bones, bodies or clear tested evidence — **✓ the right answer** · no support - **4.** One blurry video from a mate that went viral — 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t3/) ### Test 4 · ★ · wrong ✗ {#t4} In the Ice Age cartoon films giant beasts chat around. A friend says the giant beaver cut down huge forests. What is right? - **1.** It lived in the sea — score 1 - **2.** Yes, it cut down whole forests with its huge teeth to build giant dams — **← Mova's choice** · score 6 - **3.** It probably ate mostly water plants and may not have built dams — **✓ the right answer** · score 3 - **4.** It ate only meat — score -1 **Why:** It took the question to ask which statement is true. It chose option 2 with score 6, against 3 for the next best. Its support: lesson 242, line 2: «When you see a tree in the park chewed into a pencil point, a beaver has been working there, cutting wood to build a dam across a stream.», reached through a sentence linked to the one the question matched. What matched: the same action «build» (+3); the same doer «beaver» (+2); the same thing acted on «dam» (+1). The right option, 3, scored 3. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t4/) ### Test 5 · ★ · wrong ✗ {#t5} «why'd a beaver that eats pond weeds need a dam lol» What is the best reasoning? - **1.** Every beaver must build a dam, or it cannot live at all — score 3 - **2.** Dams are for sleeping only — no support - **3.** Beavers build dams to hide fish — **← Mova's choice** · score 5 - **4.** It found its food in water already, so it might not need one — **✓ the right answer** · score 2 **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 384, line 11: «The giant beaver of North America was about two metres long, lived until about 12,000 years ago and is reported to have eaten mostly water plants, so it may no…», reached through a sentence linked to the one the question matched. What matched: the same action «build» (+3); the same doer «beaver» (+2); its «because» matches the remembered cause (+2); the same thing acted on «dams» (+1). Against it: one says «not», the other does not (counts against) (-3). The right option, 4, scored 2. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t5/) ### Test 6 · ★ · wrong ✗ {#t6} Count them: a Deinotherium and a modern African elephant. How many tusks in all? - **1.** Eight — **← Mova's choice** · no support - **2.** Four — **✓ the right answer** · no support - **3.** Six — no support - **4.** Two — 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t6/) ### Test 7 · ★ · wrong ✗ {#t7} «big animals are best, they win everything» What problem does a giant body bring? - **1.** It cannot keep warm — score -4 - **2.** Every predator can catch it — **← Mova's choice** · score 3 - **3.** It needs huge amounts of food every day — **✓ the right answer** · score 3 - **4.** It cannot eat twigs — no support **Why:** It took the question to ask what it is done to. It chose option 2 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 353, line 12: «Each hair has a tiny muscle that pulls it upright, making a goosebump; in furry animals raised fur traps warm air or makes them look bigger, like a scared cat.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «furry animals» (+1); it fills the role the question asks for (+1); a different action (counts against) (+1). The right option, 3, scored 3. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t7/) ### Test 8 · ★ · wrong ✗ {#t8} What would happen to a giant ape if the fruit forest around it turned into dry grassland? - **1.** It would start eating grass at once — **← Mova's choice** · score 1 - **2.** It would get bigger — score 1 - **3.** It would struggle to find enough food — **✓ the right answer** · score 1 - **4.** It would grow wings and leave — score 1 **Why:** It took the question to ask what happens next. It chose option 1 with score 1, tied with another option at 1 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 59, line 5: «Cartoons show a tomato as a vegetable and a banana full of big seeds; to a scientist a fruit is the part that grows from the flower and holds the seeds, so a t…», reached through what followed the sentence the question matched. What matched: the same doer «part» (+1). The right option, 3, scored 1. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t8/) ### Test 9 · ★ · right ✓ {#t9} «Diprotodon = two noses right?» What is right? - **1.** No, it means giant wombat — no support - **2.** No, it means two forward teeth — **← Mova's choice** · **✓ the right answer** · score 3 - **3.** Yes, two noses — no support - **4.** No, it means two pouches for babies — 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 384, line 10: «The name Diprotodon means two forward teeth: two big front teeth stuck forward from its lower jaw, good for biting off plants.», reached through the remembered sentence the question matched. What matched: the same thing acted on «two forward teeth» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t9/) ### Test 10 · ★ · wrong ✗ {#t10} Why might people arriving in Australia have mattered to Diprotodon? - **1.** Some scientists think hunting helped it die out, which is argued — **✓ the right answer** · no support - **2.** People kept them all as pets — **← Mova's choice** · score 2 - **3.** People taught them to swim — score 2 - **4.** It had died out millions of years before people — score 0 **Why:** It took the question to ask why something happens (its cause). It chose option 2 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 201, line 16: «People in the Andes tamed guinea pigs thousands of years ago and kept them as farm animals; they reached Europe on ships about five hundred years ago.», reached through the option's own match among the sentences about the question's things. What matched: the same action «keep» (+1); the same circumstance (+1). The right option, 1, 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t10/) ### Test 11 · ★ · wrong ✗ {#t11} Which is true about a big body? - **1.** It lets an animal hide easily — score 2 - **2.** It needs much less food than a small body does — **← Mova's choice** · score 3 - **3.** It keeps heat in and is hard for predators to kill — **✓ the right answer** · score 3 - **4.** It makes babies very quickly — score 1 **Why:** It took the question to ask which statement is true. It chose option 2 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 186, line 8: «The bumblebee bat, about the size of a big bumblebee and weighing about two grams, is one of the smallest mammals, and small bodies need little food but lose h…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «little food» (+2); the same action «need» (+1). The right option, 3, scored 3. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/t11/) ### Exam question 1 · formal language · wrong ✗ {#e1} Ascertain the number of toes upon each foot of Paraceratherium. - **1.** Five — **← Mova's choice** · no support - **2.** Two — no support - **3.** One — no support - **4.** Three — **✓ 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/e1/) ### Exam question 2 · formal language · right ✓ {#e2} Select the response consistent with the established facts concerning the discovery of Gigantopithecus. - **1.** It was photographed in the forests of North America — no support - **2.** It was described from living specimens — no support - **3.** A complete skeleton was recovered from glacial ice in the mountains of Tibet — no support - **4.** Its teeth were first found among dragon teeth for sale in Hong Kong — **← 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 273, line 3: «Sharks lose and replace teeth all their lives, thousands of them, so old teeth pile up on the sea floor, and that is why you can find a black fossil shark toot…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+3); the same thing acted on «black shark tooth» (+2); the same action «find» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/biology/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/e2/) ### Exam question 3 · formal language · right ✓ {#e3} Identify the principal reason for which the stature of Gigantopithecus remains conjectural. - **1.** It is known solely from teeth and a small number of lower jaws — **← Mova's choice** · **✓ the right answer** · no support - **2.** Its bones are too large for any museum — no support - **3.** Its skeleton has been measured but disputed for political reasons — no support - **4.** It changed in height with the seasons — 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/e3/) ### Exam question 4 · formal language · wrong ✗ {#e4} Which of the following statements most accurately characterises the diet attributed to the giant beaver? - **1.** It fed upon other rodents — no support - **2.** It was a predator of fish and frogs — **← Mova's choice** · score 6 - **3.** It consumed exclusively the trunks of great trees, which it felled itself — no support - **4.** It is reported to have subsisted principally upon aquatic plants — **✓ the right answer** · no support **Why:** It took the question to ask who or what does it. It chose option 2 with score 6, the only option with support. Its support: lesson 375, line 16: «Storks eat frogs, grasshoppers, mice, worms and fish, follow tractors to catch animals turned up from the soil, and need wet meadows full of life.», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «frogs» (+3); the same circumstance (+2); a different doer (counts against) (+1). The right option, 4, 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/384-mammal-giants-of-the-past-paraceratherium-diprotodon-the-giant-beaver-and-gigantopithecus/e4/) - ← previous: [383. Giant reptiles of the past: Titanoboa, Sarcosuch…](https://md.mova.elamur.ai/free/en/school-run/biology/383-giant-reptiles-of-the-past-titanoboa-sarcosuchus-deinosuchus-and-giant-tortoises/) - next →: [385. Ice Age Ukraine and Europe: cave bears, cave lio…](https://md.mova.elamur.ai/free/en/school-run/biology/385-ice-age-ukraine-and-europe-cave-bears-cave-lions-the-siberian-unicorn-and-mammoth-bone-houses/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/school-run/biology/)