AA
Diploid
2 sets of chromosomes
cell plate
A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis.
binary fission
A form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
mitospore
A spore that develops by mitosis.
gametic
All of the following animal cells are diploid except
Heterozygous
An organism that has two different alleles for a trait
hormone
Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another
chromatin
Clusters of DNA, RNA, and proteins in the nucleus of a cell
sporophyte
Diploid, or spore-producing, phase of an organism
Anisogamete
The condition of having gametes similar in shape, but different in size.
annulus
a few rows of specialized cells
vascular plant
a plant that has true vascular tissue
Condidospore
an asexually produced fungal spore formed on a conidiophore
sorus
cluster of sporangia on the underside of a fern frond
corolla
collection of petals
haplontic
describes a life cycle in which the haploid stage is the dominant stage
Isogamy
gametes are equal in size
heterogamous
gametes unlike in size
Haploid
having a single set of unpaired chromosomes
oogamous
large eggs and small sperm
juvenile stage of an animal
larva
sporic
life cycle in which a haploid generation alternates with a diploid generation
stigma
not part of the stamen
Differentiation
process in which cells become specialized in structure and function
external fertilization
process in which eggs are fertilized outside the female's body
Atheridium
produces sperm in nonflowering plants
Corm
rounded, fleshy underground stem that contains stored food
Cytokinesis
separation of two ends of an old cell
gonad
sex glands, sex organs
anisogamous
sperm and egg differ in size
resting spore
spore, often thick-walled, that can remain alive in a dormant state for some time, later germinating and capable of initiating infection
Centriole
structure in an animal cell that helps to organize cell division
Homologous
term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent
adventitious
the appearance of buds or roots from tissue which is not a bud or root
anther
the part of a stamen that contains the pollen.
diploid
the sporophyte generation
mitosis
the type of cell division that leads to growth and development
conjugation
transfer of genetic material from one cell to another