AP BIOLOGY

PLANTS

BRYOPHYTES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is gametophyte?
A
The stage that produces sperm cells and egg cells.
B
The stage that produces spores.
C
The stage that produces rhizomes.
Explanation: 

Detailed explanation-1: -In the gametophyte phase, which is haploid (having a single set of chromosomes), male and female organs (gametangia) develop and produce eggs and sperm (gametes) through simple mitosis for sexual reproduction.

Detailed explanation-2: -The gametophyte is the sexual phase in the alternation of generations of plants and a few algae. This stage produces gametes that undergo alternation of generations. It is a haploid phase producing the zygote from which sporophytes arise.

Detailed explanation-3: -The gametophyte produces structures known as antheridia and archegonia, which produce the male and female gametes respectively. Collectively these structures are known as gametangia.

Detailed explanation-4: -The sporophyte produces spores by meiosis. The spores grow into gametophytes. The gametophytes produce gametes (eggs and sperm).

Detailed explanation-5: -The sexual phase, called the gametophyte generation, produces gametes, or sex cells, and the asexual phase, or sporophyte generation, produces spores asexually. In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set).

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