Definitions
The study of how an organism (or any one of its parts) functions
What is the definition of Physiology?
The three parts of the male gametophyte
What are the sperm nucleus, the tube nucleus, and the pollen grain all a part of?
This is where water and minerals only flows upward in the vascular system of a tree
What is the Xylem?
These must be present in order for guard cells to open the a leaf's stomata.
What are water and light?
This is what a fish would use to change its depth without using its fins.
What is the swim bladder?
The response of an organism to seasonal changes in day length
What is the definition of Photoperiodism?
The top part of the female reproductive tube that receives the male gametophye and leads to the female gametophyte
What is the stigma of a pistil?
This is where minerals and fluid travel from a source to a sink
What is the phloem?
Plants and animals needa form of nitrogen but the nitrogen in the soil is not usable as is. These help change the nitrogen in the soil into the usable nitrate.
What is bacteria in the soil?
This animal uses Jacobson's organ to sense the environment.
What is the snake?
The process by which a seed develops into a seedling
What is the definition of Germination?
This is the female gametophyte, which contains a total of seven cells
What is the embryo sac?
This will happen when transpiration is happening at a high rate in the leaves
What is causing more water and minerals to flow faster in the xylem?
The term used to explain the response of a plant to an evironmental stimulus, such as touch, gravity, and light.
What is tropism?
A plant in this plant group has a vascular system, makes seeds, but does not make flowers.
What is a gymnosperm?
A plant that lives for one growing season
What is the definition of Annual?
This is formed after the fertilization of the egg cell
What is the zygote (or embryo)?
This is the term used to describe where the concentration of sugars is the lowest.
What is the sink?
This structure will give rise to the leaves which will use photosynthesis to feed the plant embryo once the endosperm is used up.
What is the plumule?
This animal breathes with unidirectional respiration.
What is a bird?
A process in which the plant seals off its conection to a leaf, causing the leaf to die and fall off
What is the definition of Abscission?
This forms after a second fertilization produces a triploid cell. Its purpose is to feed the zygote.
What is the endosperm?
Material in the phloem always flows from the source to the sink. This is what happens when there is no photosynthesis.
When does the material in the phloem flow from the roots to the leaves?
Auxins, gibberellins, cytokinins, abscisic acid, and ethylene.
What are the five major categories of phytohormones?
This is the organ system that makes up the brain and spinal chord.
What is the Central Nervous System?