Q21. Which plant division includes plants with reproductive structures called “sori” on the undersides of their fronds?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: b) Pteridophyta
Explanation: Pteridophyta, or ferns, have reproductive structures called “sori” on the undersides of their fronds. These sori contain sporangia that produce spores for reproduction.
Q22. Which plant division includes plants that typically have a waxy cuticle and stomata on their leaves to regulate gas exchange?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: d) Angiosperms
Explanation: Angiosperms, or flowering plants, typically possess a waxy cuticle covering their leaves and have stomata for gas exchange regulation. These adaptations help reduce water loss and control transpiration.
Q23. Which plant division includes plants commonly known as “flowering plants”?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: d) Angiosperms
Explanation: Angiosperms are commonly known as flowering plants. They produce seeds enclosed within fruits and are the most diverse group of plants on Earth.
Q24. Which plant division includes plants that reproduce via spores released from structures called sporangia?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: b) Pteridophyta
Explanation: Pteridophyta, or ferns and their allies, reproduce via spores released from sporangia, which are structures found on the underside of fronds.
Q25. Which plant division is characterized by having seeds enclosed within a fruit?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: d) Angiosperms
Explanation: Angiosperms have seeds enclosed within a fruit, which may take various forms such as berries, pods, nuts, or drupes.
Q26. Which plant division includes plants commonly found in xeric habitats, such as deserts and arid regions?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: c) Gymnosperms
Explanation: Gymnosperms are often found in xeric habitats, such as deserts and arid regions, where they have adaptations to withstand drought conditions.
Q27. Which plant division includes plants commonly known as “seed plants”?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: c) Gymnosperms
Explanation: Gymnosperms are commonly known as seed plants because they produce seeds that are not enclosed within a fruit.
Q28. Which plant division includes plants commonly used for the production of wood and timber?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: c) Gymnosperms
Explanation: Gymnosperms, such as conifers, are commonly used for the production of wood and timber due to their straight, tall trunks and durable wood.
Q29. Which plant division includes plants commonly used for their ornamental flowers and landscaping purposes?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: d) Angiosperms
Explanation: Angiosperms, or flowering plants, are commonly used for their ornamental flowers and landscaping purposes due to their diverse flower shapes, colors, and fragrances.
Q30. Which plant division includes plants that are commonly found in shaded, moist habitats such as forest floors?
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
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Correct Answer: a) Bryophyta
Explanation: Bryophyta, such as mosses and liverworts, are commonly found in shaded, moist habitats such as forest floors, where they can form dense carpets or mats.