---
title: The Amazon river: pink dolphins, flooded forest, giant fis… — the lesson's questions with trees and pragmatics · Biology
description: The 15 test and exam questions of lesson 155 «The Amazon river: pink dolphins, flooded forest, giant fish and piranhas» of the biology course of Mova's primary school, each with its options, Mova's choice and the right answer, every sentence with its dependency tree and pragmatics.
---

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# The Amazon river: pink dolphins, flooded forest, giant fish and piranhas

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The 15 questions of lesson 155 «The Amazon river: pink dolphins, flooded forest, giant fish and piranhas» of the biology course of Mova's primary school with their options, 80 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/155-the-amazon-river/).

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- [t1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t1/) — In a cartoon a cow steps into a river and a piranha swarm leaves only bones in seconds. What is true? — wrong ✗
- [t2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t2/) — «pink dolphin?? no way, dolphins are grey, that's fake» What is right? — right ✓
- [t3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t3/) — A family of 6 giant otters, sorry, 7, stands on the bank. How many legs altogether? — wrong ✗
- [t4](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t4/) — A boto, an arapaima and a giant otter swim past. How many tails? — wrong ✗
- [t5](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t5/) — What would happen if the floods stopped coming to the Amazon forest? — right ✓
- [t6](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t6/) — «a fish that breathes air? fish breathe water, mate» What is right? — right ✓
- [t7](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t7/) — «my brother wants to sit on a lily leaf» What can the giant lily Victoria leaf hold? — right ✓
- [t8](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t8/) — A tour guide says «surfers ride the river here». How can that be? — wrong ✗
- [t9](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t9/) — A heap of brown leaves in the mud suddenly swallows a fish. What was it? — right ✓
- [t10](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t10/) — «that black river's dirty, don't swim, it's oil» What is the dark colour really? — wrong ✗
- [t11](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/t11/) — The bullet train's nose was copied from which Amazon diver? — wrong ✗
- [e1](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/e1/) — Select the response consistent with the established facts concerning the piranhas of the Amazon. — right ✓ · exam
- [e2](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/e2/) — Identify the principal reason for which the arapaima rises periodically to the surface. — right ✓ · exam
- [e3](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/e3/) — Which of the following statements most accurately characterises the pororoca? — wrong ✗ · exam
- [e4](https://md.mova.elamur.ai/free/en/corpora/questions/biology/155-the-amazon-river/e4/) — Ascertain the reason for which the Rio Negro and the Solimões flow alongside one another for several kilometres prior to mixing. — right ✓ · exam

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