Question

question 17 (2.5 points)
in most ferns, roots and leaves sprout from _.
fronds
rhizomes
sporangia
sori
gametophytes

Explanation:

• Fronds: These are the large, divided leaves of ferns. They are not the source from which roots and leaves sprout.
• Rhizomes: Fern rhizomes are horizontal underground stems. Roots grow downward from the rhizome, and leaves (fronds) grow upward. This is the correct structure from which roots and leaves sprout.
• Sporangia: These are structures on ferns (usually on the underside of fronds) that produce spores. They are not involved in the sprouting of roots and leaves.
• Sori: These are clusters of sporangia. Again, their function is spore - production, not the sprouting of roots and leaves.
• Gametophytes: In the fern life cycle, the gametophyte is the haploid, heart - shaped structure that produces gametes (sperm and eggs). It is not the structure from which roots and leaves of the fern sporophyte (the large, familiar fern plant) sprout.

Answer:

rhizomes