Parts of a plant and what each does

Tests: 7 of 13 right · Exam: 2 of 4 right · Kind: plain · Understood: 10 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 21 of the world 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 ✓

A carnation stands in water coloured with blue ink, and next day its petals are blue. What does this show?

1. Flowers soak up the colour of the sky from the air — no support
2. The stem carries water up to the flower — ← Mova's choice · ✓ the right answer · score 7
3. Roots turn water into food — score 3
4. Petals make their own blue paint — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 7, against 3 for the next best. Its support: lesson 21, line 2: «The roots hold the plant in the soil and take in water and minerals; the stem holds the plant up and carries water up and food around through thin tubes.», reached through the option's own match among the sentences about the question's things. What matched: the same action «carry up» (+2); the same doer «stem» (+2); it fills the role the question asks for (+2); the same thing acted on «water» (+1). · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

A gardener cuts off all the leaves of a young plant. What will happen to it?

1. Nothing, leaves are only decoration — no support
2. It will grow faster without leaves — no support
3. It will take its food from the soil — no support
4. It cannot make food and will weaken — ← Mova's choice · ✓ the right answer · score -2

Why: It took the question to ask which statement is true. It chose option 4 with score -2, the only option with support. Its support: lesson 21, line 10: «Leaves make food for the plant using sunlight.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+1); the same thing acted on «food» (+1). Against it: a different doer (counts against) (-1); one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

Test 3 · right ✓

A sweet potato is a swollen food store of its plant. Which part of the plant is it?

1. The flower — no support
2. The leaf — no support
3. The root — ← Mova's choice · ✓ the right answer · score 10
4. The stem — score 10

Why: It took the question to ask who or what does it. It chose option 3 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 21, line 6: «Roots anchor a plant in the soil so wind and rain cannot easily pull it out.», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+4); the same doer «roots» (+3); the same thing acted on «plant» (+3). · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

Which statement about plant food is true?

1. Plants get all their food from rain — ← Mova's choice · no support
2. Plants eat soil to get their food — no support
3. Plants make their own food — ✓ the right answer · no support
4. Plants get their food from insects — 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

Test 5 · right ✓

After a storm, which tree is more likely to stay standing?

1. One with deep, spreading roots — ← Mova's choice · ✓ the right answer · no support
2. One with large, bright flowers — no support
3. One with very many fruits — no support
4. One with thin, smooth leaves — 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 cherry contains a hard stone. What is the stone?

1. A root that grows inside fruit — ← Mova's choice · no support
2. A stem that fell into the fruit — no support
3. A leaf bud that has hardened — no support
4. The seed protected by the fruit — ✓ 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

Test 7 · wrong ✗

What would happen to a plant whose stem was crushed so its tubes broke?

1. It would make more flowers — score 1
2. Its roots would grow leaves — no support
3. Water could not reach its leaves — ✓ the right answer · no support
4. It would make food faster — ← Mova's choice · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, against 1 for the next best. Its support: lesson 21, line 10: «Leaves make food for the plant using sunlight.», reached through the remembered sentence the question matched. What matched: the same action «make» (+4); the same thing acted on «food» (+2). Against it: a different doer (counts against) (-2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

Why do seeds carry their own food store?

1. To feed the young plant before it has leaves — ✓ the right answer · score -1
2. To attract animals that eat roots — no support
3. To feed the soil around the seed — no support
4. To make the seed heavier, so it sinks into the soil — ← Mova's choice · score 1

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 1, against -1 for the next best. Its support: lesson 21, line 16: «Plants do not take their food from the soil; they make it themselves in their leaves.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+2). Against it: the same doer «seeds» (-1). The right option, 1, scored -1. · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

Which part of a plant lets water vapour escape into the air?

1. The centre of the flower — ← Mova's choice · no support
2. The hard skin of the seeds — no support
3. The tips of the roots — no support
4. Tiny holes in the leaves — ✓ 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

Test 10 · wrong ✗

why do plants have roots anyway

1. To breathe in all the air it needs from under the ground — no support
2. To make the seeds of the plant — score 6
3. To make food from the sunlight — ← Mova's choice · score 10
4. To hold the plant in the ground and take in water — ✓ the right answer · score 2

Why: It took the question to ask which statement is true. It chose option 3 with score 10, against 6 for the next best. Its support: lesson 17, line 12: «Plants take in carbon dioxide and give out oxygen when they make food in sunlight.», reached through the remembered sentence the question matched. What matched: the same action «make» (+4); the same place «sunlight» (+4); the same thing acted on «food» (+2). The right option, 4, scored 2. · the question and its options parsed, with trees and pragmatics

Test 11 · right ✓

wots the flower even for

1. It holds the plant in the soil — no support
2. It soaks up water from the rain — no support
3. It makes the seeds — ← Mova's choice · ✓ the right answer · score 3
4. It makes the plant's food — score 1

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 21, line 4: «The flower makes seeds, and the fruit protects the seeds and helps them travel.», reached through the option's own match among the sentences about the question's things. What matched: the same action «make» (+1); the same doer «flower» (+1); the same thing acted on «seeds» (+1). · the question and its options parsed, with trees and pragmatics

Test 12 · right ✓

Mia reckons plants eat soil to grow. right?

1. Yes, plants eat the soil through their roots — score 2
2. Yes, soil is the main food of all plants — score 4
3. No, plants eat the insects in the soil — score 2
4. No, plants make their food from light, air and water — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, against 4 for the next best. Its support: lesson 17, line 12: «Plants take in carbon dioxide and give out oxygen when they make food in sunlight.», reached through the remembered sentence the question matched. What matched: the same action «make» (+4); the same doer «plants» (+2); the same thing acted on «food» (+2). · the question and its options parsed, with trees and pragmatics

Test 13 · right ✓

Tom says a potato is a root like a carrot. true?

1. No, a potato is an underground stem — ← Mova's choice · ✓ the right answer · no support
2. Yes, potatoes and carrots are both roots — no support
3. Yes, a potato is a root with eyes — no support
4. No, a potato is a fruit of the plant — 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 1 · formal language · wrong ✗

Identify the part of the plant principally responsible for the absorption of water and minerals.

1. The fruit — ← Mova's choice · no support
2. The leaves — no support
3. The flowers — no support
4. The roots — ✓ 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 2 · formal language · right ✓

Which of the following statements most accurately characterises the nutrition of plants?

1. Plants obtain their food from insects — score 8
2. Plants obtain their food from rainwater — score 8
3. Plants obtain their food entirely from the soil — score 10
4. Plants produce their own food within their leaves — ← Mova's choice · ✓ the right answer · score 12

Why: It took the question to ask who or what does it. It chose option 4 with score 12, against 10 for the next best. Its support: lesson 17, line 12: «Plants take in carbon dioxide and give out oxygen when they make food in sunlight.», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+4); the same doer «plants» (+3); the same thing acted on «food» (+3); the same action «make» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Identify the part of the plant from which seeds are produced.

1. The root system — ← Mova's choice · no support
2. The foliage leaf — no support
3. The principal stem — no support
4. The flower — ✓ 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 4 · formal language · right ✓

Select the response that is consistent with the established facts concerning the potato.

1. It is a root that absorbs water — no support
2. It is an underground stem in which food is stored — ← Mova's choice · ✓ the right answer · score 1
3. It is a seed containing a young plant and its store of food — no support
4. It is the fruit of the potato plant — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 21, line 15: «Some plants store food in their roots, like carrots and sweet potatoes, or in underground stems, like potatoes.», reached through the option's own match among the sentences about the question's things. What matched: the same action «store» (+1); the same thing acted on «food» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/21-parts-of-a-plant/