Q11. Which structure in Bryophytes anchors the plant to its substrate?
a) Rhizoids
b) Roots
c) Stolons
d) Pneumatophores
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Correct Answer: a) Rhizoids
Explanation: Bryophytes lack true roots, but they have rhizoids, which are thread-like structures that anchor the plant to its substrate and aid in absorption.
Q12. Which of the following is not a type of Bryophyte?
a) Moss
b) Fern
c) Liverwort
d) Hornwort
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Correct Answer: b) Fern
Explanation: Ferns belong to the division Pteridophyta, whereas Bryophytes include mosses, liverworts, and hornworts, which are non-vascular plants.
Q13. Bryophytes are important in ecosystems for:
a) Soil erosion control
b) Nutrient cycling
c) Carbon sequestration
d) All of the above
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Correct Answer: d) All of the above
Explanation: Bryophytes play crucial roles in ecosystems by controlling soil erosion, cycling nutrients, and sequestering carbon dioxide, contributing to ecosystem stability and functioning.
Q14. The reproductive structures of Bryophytes are called:
a) Flowers
b) Cones
c) Sporangia
d) Strobili
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Correct Answer: c) Sporangia
Explanation: Bryophytes produce spores within specialized structures called sporangia, which are typically located on the sporophyte generation of the plant.
Q15. Which Bryophyte type has a flattened, ribbon-like thallus?
a) Liverworts
b) Mosses
c) Hornworts
d) All of the above
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Correct Answer: a) Liverworts
Explanation: Liverworts have a flattened, ribbon-like thallus, which distinguishes them from other Bryophyte types like mosses and hornworts.
Q16. In Bryophytes, the sporophyte generation is dependent on the:
a) Gametophyte
b) Sporophyte
c) Rhizoids
d) Vascular tissues
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Correct Answer: a) Gametophyte
Explanation: In Bryophytes, the sporophyte generation is dependent on the gametophyte generation for nutrition and support, making the gametophyte the dominant phase of the life cycle.
Q17. What is the primary function of the sporophyte in Bryophytes?
a) Photosynthesis
b) Reproduction
c) Absorption
d) Anchorage
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Correct Answer: b) Reproduction
Explanation: The primary function of the sporophyte in Bryophytes is reproduction, as it produces spores through meiosis, which eventually develop into new gametophytes.
Q18. Which Bryophyte type has a sporophyte that is photosynthetic and remains green?
a) Liverworts
b) Mosses
c) Hornworts
d) All of the above
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Correct Answer: c) Hornworts
Explanation: Hornworts have a photosynthetic sporophyte, which is unique among Bryophytes as it remains green and contributes to the plant’s photosynthetic activity.
Q19. Which of the following is not a type of Bryophyte reproduction?
a) Vegetative propagation
b) Binary fission
c) Sexual reproduction
d) Asexual reproduction
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Correct Answer: b) Binary fission
Explanation: Binary fission is a form of asexual reproduction typically associated with unicellular organisms, whereas Bryophytes reproduce sexually through spores or asexually through vegetative propagation.
Q20. What is the primary role of the capsule in Bryophyte sporophytes?
a) Photosynthesis
b) Spore production
c) Absorption
d) Anchorage
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Correct Answer: b) Spore production
Explanation: The capsule in Bryophyte sporophytes is responsible for spore production. It contains sporangia, which undergo meiosis to produce haploid spores.