What Are The Parts of A Seed?: Lesson Review | PDF - Free Printable
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Step-by-step solution for: What Are The Parts of A Seed?: Lesson Review | PDF
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Show Answer Key & Explanations
Step-by-step solution for: What Are The Parts of A Seed?: Lesson Review | PDF
Let's solve the worksheet step by step, based on the content of the image and biological knowledge.
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1. The outer covering protecting the embryo of the seed is the
✔ seed coat
*Explanation:* The seed coat (also called testa) is a tough outer layer that protects the delicate embryo inside from damage, drying out, and pathogens.
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2. The place inside a seed where food is stored is the
✔ cotyledon(s) or endosperm
*Explanation:* In many seeds, food is stored in the cotyledons (the seed leaves). In some seeds (like corn), it’s stored in the endosperm. Since this question refers to "the place," both are correct depending on the plant type. But in most common examples (e.g., beans), the answer is cotyledons.
> ✔ Most appropriate answer: cotyledons
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3. If you plant a seed, the embryo may begin to grow, or
✔ germinate
*Explanation:* Germination is the process by which a seed begins to grow into a new plant after being planted in suitable conditions (water, warmth, oxygen).
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4. As the seed grows the first true leaves unfold, and then the cotyledons wither and
✔ die
*Explanation:* After the first true leaves emerge, the plant starts making its own food via photosynthesis. The cotyledons, having served their purpose, lose their function and eventually die.
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5. The cotyledons die because the young plant can make its own
✔ food
*Explanation:* Once the plant develops true leaves, it can perform photosynthesis and produce its own food, so it no longer needs the stored nutrients from the cotyledons.
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6. The hilum is the mark on the seed coat where the seed was attached to the
✔ pod or fruit
*Explanation:* The hilum is the scar left on a seed where it was attached to the placenta inside the fruit (like a pod in beans). So, the best answer is pod (in legumes) or more generally fruit.
> ✔ Best answer: fruit
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Look at the diagram showing stages A through G of seed germination and plant growth:
- A: Dry seed
- B: Seed absorbs water, begins to swell
- C: Root emerges (radicle)
- D: Shoot begins to grow upward
- E: Cotyledons emerge above ground
- F: First true leaves appear
- G: Plant has mature leaves and roots
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1. What is taking place?
✔ Seed germination and plant development
*Explanation:* The sequence shows the stages from a dry seed to a young plant growing into the soil and producing leaves.
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2. At what stage does the young plant begin photosynthesis?
✔ Stage F
*Explanation:* Photosynthesis begins when the first true leaves unfold and are exposed to light. These leaves contain chlorophyll and can produce food. Stage F shows the emergence of true leaves.
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3. At what stage do the cotyledons wither and die?
✔ Stage G
*Explanation:* By stage G, the true leaves are fully developed and performing photosynthesis. The cotyledons have completed their role and begin to wither and die.
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4. At what stage can the plant be seen above ground?
✔ Stage E
*Explanation:* In stage E, the shoot has emerged from the soil and the cotyledons are visible above ground. This is the first time the plant becomes visible above the soil surface.
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#### Lesson Review
1. seed coat
2. cotyledons
3. germinate
4. die
5. food
6. fruit
#### Skill Challenge
1. Seed germination and plant development
2. Stage F
3. Stage G
4. Stage E
---
Let me know if you'd like a printable version or a labeled diagram explanation!
---
Lesson Review
1. The outer covering protecting the embryo of the seed is the
✔ seed coat
*Explanation:* The seed coat (also called testa) is a tough outer layer that protects the delicate embryo inside from damage, drying out, and pathogens.
---
2. The place inside a seed where food is stored is the
✔ cotyledon(s) or endosperm
*Explanation:* In many seeds, food is stored in the cotyledons (the seed leaves). In some seeds (like corn), it’s stored in the endosperm. Since this question refers to "the place," both are correct depending on the plant type. But in most common examples (e.g., beans), the answer is cotyledons.
> ✔ Most appropriate answer: cotyledons
---
3. If you plant a seed, the embryo may begin to grow, or
✔ germinate
*Explanation:* Germination is the process by which a seed begins to grow into a new plant after being planted in suitable conditions (water, warmth, oxygen).
---
4. As the seed grows the first true leaves unfold, and then the cotyledons wither and
✔ die
*Explanation:* After the first true leaves emerge, the plant starts making its own food via photosynthesis. The cotyledons, having served their purpose, lose their function and eventually die.
---
5. The cotyledons die because the young plant can make its own
✔ food
*Explanation:* Once the plant develops true leaves, it can perform photosynthesis and produce its own food, so it no longer needs the stored nutrients from the cotyledons.
---
6. The hilum is the mark on the seed coat where the seed was attached to the
✔ pod or fruit
*Explanation:* The hilum is the scar left on a seed where it was attached to the placenta inside the fruit (like a pod in beans). So, the best answer is pod (in legumes) or more generally fruit.
> ✔ Best answer: fruit
---
Skill Challenge
Look at the diagram showing stages A through G of seed germination and plant growth:
- A: Dry seed
- B: Seed absorbs water, begins to swell
- C: Root emerges (radicle)
- D: Shoot begins to grow upward
- E: Cotyledons emerge above ground
- F: First true leaves appear
- G: Plant has mature leaves and roots
---
1. What is taking place?
✔ Seed germination and plant development
*Explanation:* The sequence shows the stages from a dry seed to a young plant growing into the soil and producing leaves.
---
2. At what stage does the young plant begin photosynthesis?
✔ Stage F
*Explanation:* Photosynthesis begins when the first true leaves unfold and are exposed to light. These leaves contain chlorophyll and can produce food. Stage F shows the emergence of true leaves.
---
3. At what stage do the cotyledons wither and die?
✔ Stage G
*Explanation:* By stage G, the true leaves are fully developed and performing photosynthesis. The cotyledons have completed their role and begin to wither and die.
---
4. At what stage can the plant be seen above ground?
✔ Stage E
*Explanation:* In stage E, the shoot has emerged from the soil and the cotyledons are visible above ground. This is the first time the plant becomes visible above the soil surface.
---
✔ Final Answers Summary:
#### Lesson Review
1. seed coat
2. cotyledons
3. germinate
4. die
5. food
6. fruit
#### Skill Challenge
1. Seed germination and plant development
2. Stage F
3. Stage G
4. Stage E
---
Let me know if you'd like a printable version or a labeled diagram explanation!
Parent Tip: Review the logic above to help your child master the concept of inside a seed worksheet.
