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Questions and Answers
What is the meaning of the term 'angiosperm'?
What is the meaning of the term 'angiosperm'?
- Plants with a vast majority of broad-leaved trees
- Plants with seeds enclosed within a fruit (correct)
- Plants with woody stems and flowers
- Plants with vessel elements instead of tracheids in their xylem
What distinguishes angiosperms from gymnosperms?
What distinguishes angiosperms from gymnosperms?
- Being the dominant group of plants across the planet
- Diverged from the common ancestor of all living gymnosperms over 300 million years ago
- Having flowers and endosperm within their seeds
- Consisting of vessel elements in their xylem and fruits that envelop the seeds (correct)
What is the main characteristic that enabled angiosperms to diversify explosively in the Cretaceous period?
What is the main characteristic that enabled angiosperms to diversify explosively in the Cretaceous period?
- Supplying nearly all plant-based food and livestock feed
- Having seeds enclosed within a fruit and xylem consisting of vessel elements (correct)
- Having a vast majority of broad-leaved trees
- Being almost entirely dependent on agriculture
What is the significance of angiosperms in agriculture?
What is the significance of angiosperms in agriculture?
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Why are angiosperms important for agriculture?
Why are angiosperms important for agriculture?
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Study Notes
Angiosperms: Definition and Characteristics
- Angiosperms are flowering plants that produce seeds enclosed in an ovary, which develops into a fruit.
- They are the most diverse group of plants, with over 400,000 species.
Distinction from Gymnosperms
- Angiosperms are distinguished from gymnosperms by the presence of flowers, fruits, and seeds enclosed in an ovary.
Explosive Diversification in the Cretaceous Period
- Angiosperms diversified explosively in the Cretaceous period due to the development of flowers, which enabled them to attract pollinators and increase their reproductive success.
Significance in Agriculture
- Angiosperms are crucial for agriculture, as they provide food, fiber, and other essential products for human life.
- Many crops, such as rice, wheat, and corn, are angiosperms.
- Angiosperms are also the source of many medicines, dyes, and other valuable products.
Importance for Agriculture
- Angiosperms are important for agriculture because they provide a stable food source, support ecosystem services, and contribute to biodiversity.
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Description
Test your knowledge of angiosperms, which are flowering plants that bear fruits. Explore the characteristics and diversity of angiosperms in this quiz.
