1
The small openings in a stem's bark that allow air to enter the stem is called this
What is lenticels?
The first step in the process of germination
What is the seed begins to absorb water?
The tissue that surrounds and nourishes a developing plant embryo
What is endosperm?
Consists of a pod enclosing several seeds
What is a legume?
The older, inner wood of a stem that serves only to support the stem is this
What is heartwood?
The process of a new plant growing from a root, stem, or leaf of an existing plant
What is vegetative reproduction?
The part of a flower that produces pollen
What is anther?
Produced by plants of the grass family
What is a grain?
The section of a twig between nodes is called this
What is a internode?
The tiny, tube-like projections that extend from the epidermal cells of a root to absorb water and minerals are these
What are root hairs?
The chief factor determining when a plant flowers
What is length of day and night?
A young woody stem stores water in soft, thin-walled cells at its center. The storage region is called this
What is pith?
Reproductive cells, such as egg cell and sperm cells, are called these
What are gametes?
The period of inactivity that occurs before germination is called this
What is dormancy?
The type of reproduction in which sperm and egg cells unite is this type of reproduction
What is sexual reproduction?
The part of a flower that covers and protects the rest of the flower during development
What is sepal?
The part of a seed's embryo that develops into the new plant's root system
What is a radicle?
The process in which substances mix through random molecular motion is called this
What is diffusion?
The structure that covers and protects the tender root tip is this
What is the root cap?
The structures of a plant embryo that contain stored food to supply the energy needed for sprouting are these
What are the cotyledons?
The tough outer covering of a herbaceous monocot stem is called this
What is a rind?
The special roots that grow from unusual regions of a plant
What is adventitious roots?
The part of a root tip in which cells grow longer is called the region of this
What is elongation?
Certain types of grass plants have flowers that develop underground and never open. Because they cannot be pollinated by other flowers, these flowers must be pollinated through the process of this
What is self-pollination?
In some cases, plant seedlings that receive light from only one direction will bend toward the light; this demonstrates the tropism called this
What is phototropism?