Question 1

In _______ the cotyledon remains underground as a seedling grows.
A)garden beans
B)onions
C)peas
D)corn

Accepted Answer

In peas, the cotyledon remains underground as the seedling grows. This is characteristic of plants that undergo hypogeal germination, where the cotyledons stay below the soil surface.

Question 2

You have learned that flowering plants have a dominant sporophyte and mosses have a dominant gametophyte.Having two unequal life cycle stages is called heteromorphy.Certain algae have a homomorphous relationship between their two life cycle stages.Homomorphy likely means:
A)the two life cycle stages are equal.
B)the organism is always a sporophyte.
C)the organism is always a gametophyte.
D)the organism does not undergo alternation of generations.

Accepted Answer

Homomorphy likely means that the two life cycle stages of an organism are equal, unlike the heteromorphic life cycle stages in flowering plants and mosses.

Question 3

In grass seeds,the ________ secretes digestive enzymes into the central endosperm to release sugars from stored starch.
A)cotyledon.
B)coleorhiza.
C)aleurone.
D)radicle.

Accepted Answer

The aleurone layer is a specialized layer of cells that secretes digestive enzymes into the endosperm to release sugars from stored starch. The cotyledon contains the embryonic plant and serves as a source of nutrients during germination. The coleorhiza is a protective sheath that encases the radicle as it emerges from the seed. The radicle is the first root to emerge from the seed.

Quiz 30: Flowering Plants: Reproduction

In _______ the cotyledon remains underground as a seedling grows.

You have learned that flowering plants have a dominant sporophyte and mosses have a dominant gametophyte.Having two unequal life cycle stages is called heteromorphy.Certain algae have a homomorphous relationship between their two life cycle stages.Homomorphy likely means:

In grass seeds,the ________ secretes digestive enzymes into the central endosperm to release sugars from stored starch.