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Question
Biology
Posted 9 months ago
compare and contrast the alternation of generations of bryophytes and angiosperm
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Answer from Sia
Posted 9 months ago
Answer
The alternation of generations in bryophytes and angiosperms involves distinct differences in their life cycles.
Solution
a
Dominant Generation: In bryophytes, the gametophyte (haploid) is the dominant generation, whereas in angiosperms, the sporophyte (diploid) is dominant
b
Sporophyte Dependency: Bryophyte sporophytes are dependent on the gametophyte for nutrition, while angiosperm sporophytes are independent and photosynthetic
c
Gametophyte Size: Bryophyte gametophytes are larger and more conspicuous, whereas angiosperm gametophytes are reduced and often microscopic
d
Fertilization: Bryophytes require water for sperm to swim to the egg, while angiosperms use pollen tubes to deliver sperm to the egg, allowing fertilization without water
Key Concept
Dominant generation and dependency in life cycles
Explanation
Bryophytes have a dominant gametophyte stage and dependent sporophyte, while angiosperms have a dominant sporophyte stage and reduced gametophyte.

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