Lecture 12 Flashcards
___ complete the life cycle of a flowering plant and start the next generation.
Seeds
Seed coat = ___.
integuments
Endosperm = ___ ___ + ___.
polar nuclei, sperm
Seeds develop from ___ ___.
fertilized ovules
Seeds include an ___ ___ and some form of nutritive tissue within a ___ ___.
embryonic plant, seed coat
“Dicot” and “monocot” refer to the number of ___ ___ (or ___) present in the seed.
seed leaves, cotyledons
In dicot seeds, they are attached to + enclose the embryonic plant, they occupy the greatest part of the seed, and they absorb the nutrients from the endosperm = ___.
cotyledons
In dicots, cotyledons enclose the ___ ___.
embryonic plant
In dicots, cotyledons absorb the nutrients from the ___.
endosperm
A lima bean is an example of a ___ seed with a thin seed coat.
dicot
Small opening in the surface of an ovule, through which the pollen tube penetrates; often visible as a small pore in the ripe seed = ___.
micropyle
Scar on a seed marking the point of attachment to its seed vessel = ___.
hilum
The dicot embryo consists of the ___, ___, and ___.
epicotyl, hypocotyl, radicle
Embryonic root = ___.
radicle
Portion of embryo between cotyledon attachment and radicle (between stem and root) = ___.
hypocotyl
Develops into the shoot, and typically has embryonic leaves = ___.
epicotyl
In a monocot seed, the cotyledon transfers food from the ___ to the ___.
endosperm, embryo
In several monocot families, large amounts of ___ are present.
endosperm
A corn kernel is an example of a ___ seed.
monocot
One-seeded fruit in which the seed coat is fused to the pericarp = ___.
grain
In corn, an extensive ___ occupies much of the seed. There is a small ___ with a single ___.
endosperm, embryo, cotyledon
Sheath protecting a young shoot tip in a grass or cereal (monocots) = ___.
coleoptile
Sheath protecting the root of a germinating grass or cereal grain (monocots) = ___.
coleorhiza
Emergence of the radicle through the seed coat = seed ___.
germination
Seed germination consists of the emergence of the ___ through the ___ ___.
radicle, seed coat
Process of altering the seed coat to allow quicker water absorption and improve rates of germination = ___.
scarification
Small seeds are buried ___, while bigger seeds are buried ___.
shallowly, deeper
In dicot germination, the ___ elongates and breaks through the soil.
hypocotyl
In monocots, the ___ emerges, protecting the ___ tip.
epicotyl
