Glossary

An insect mouthpart that functions like a lower lip.

The muscular contractions of the uterus and other events that lead to birth.

An insect mouthpart that functions like an upper lip.

A tiny lymph vessel.

The process by which pyruvic acid is converted to lactic acid.

A type of polysaccharide with glucose units linked differently from those in starch.

An organ of digestion in which water is reabsorbed.

An immature form of an organism that is morphologically distinct from that of an adult.

The voice box that houses the vocal cords.

A row of sensory structures that run the length of the body of a fish.

A growing region that increases the diameter of roots and stems.

The process of causing roots to form on a stem.

one of the divisions of a blade.

one of the divisions of a blade.

The process of removal of soluble materials by the passage of water through soil

A family of plants that includes valuable food and forage species such as peas, beans, soybeans, peanuts, clovers, alfalfas, and sweet clover. Legumes convert nitrogen from the air to nitrates in the soil through a process known as nitrogen fixation. Many of these species are used as cover crops and are plowed under for soil improvement.

any plant of the family Leguminosae, such as a bean, a pea, or a lentil

a convex crystalline structure in the eye that focuses light on the retina

a convex crystalline structure in the eye that focuses light on the retina

a progressive, malignant disease of the blood-forming organs

a progressive, malignant disease of the blood-forming organs

a white blood cell

a white blood cell

A symbiotic association between fungi and green algae.

how long, on average, an individual is expected to live

a connective tissue in a joint

A connective tissue in a joint.

The initial reactions in photosynthesis, including the absorption of light by photosystems I and II, the passage of electrons along the electron transport chains, the production of NADPH and O2, and the synthesis of ATP through chemiosmosis.

the initial reactions in photosynthesis, including the absorption of light by photosystems I and II, the passage of electrons along the electron transport chains, the production of NADPH and O2, and the synthesis of ATP through chemiosmosis

a group of clusters of neurons in the brain that helps regulate the emotions

A group of clusters of neurons in the brain that helps regulate the emotions.

biotic or abiotic factor that restrains the growth of a population

biotic or abiotic factor that restrains the growth of a population

the group of genes, located on the same chromosome, that are usually inherited together

a kind of organic compound that is insoluble in water, such as fats and steroids

A kind of organic compound that is insoluble in water, such as fats and steroids.

Low-Input Sustainable Agriculture (LISA) is an alternative method of agriculture that reduces the application of purchased inputs such as fertilizer, pesticides, and herbicides. Methods include crop rotation, mechanical cultivation to control weeds, integrated pest management strategies, application of livestock manures, municipal sludge, and compost for fertilizer and over seeding of legumes into maturing fields of grain crops

organ that performs vital metabolic processes including filtration of blood, secretion of bile, and conversion of sugars into glycogen

A management system involving the use of off-site methods such as zoological parks, botanic gardens, arboretums, and captive breeding programs to protect and maintain biological diversity in plants, animals, and microorganisms.

a model of population growth in which birth and death rates vary with population size and are equal at the carrying capacity

a plant that flowers when exposed to day lengths longer than the plant’s critical length

in the kidney, the part of the nephron that maintains a high concentration of sodium chloride in the surrounding fluid

the respiratory organ where gas exchange occurs

the menstrual stage in which the corpus luteum develops

a hormone that stimulates ovulation and androgen secretion by the corpus luteum

the fluid of the lymphatic system

a series of one-way vessels that carry intercellular fluid from tissues to the bloodstream

a type of white blood cell occurring in two primary forms, T cells and B cells

a tumor in the tissues that form blood cells

the disintegration of a cell by disruption of the plasma membrane

the replication process of viruses that results in the destruction of the host cell