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Question
Comparable to angiosperms, which of the following algae exhibits diplontic life cycle?
Comparable to angiosperms, which of the following algae exhibits diplontic life cycle?
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Solution
The correct option is C Fucus
Fucus (rockweed), a brown alga, displays a diploid life history. The zygote (2n) becomes an embryo (very young sporophyte) and developes into the mature Fucus with receptacles at the tip of the algae. The receptacles are reproductive branches and contain many cavities with external pores, which contain antheridia (male) and oogonia (female), then through meiosis, sperm (1n) and egg (1n) are produced. Syngamy occurs when the two fuse and become a zygote (2n).
Fucus (rockweed), a brown alga, displays a diploid life history. The zygote (2n) becomes an embryo (very young sporophyte) and developes into the mature Fucus with receptacles at the tip of the algae. The receptacles are reproductive branches and contain many cavities with external pores, which contain antheridia (male) and oogonia (female), then through meiosis, sperm (1n) and egg (1n) are produced. Syngamy occurs when the two fuse and become a zygote (2n).
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