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2.20: Asexual vs. Sexual Reproduction

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

asexual reproduction

Process of forming a new individual from a single cell or individual.

binary fission

Reproduction through growth and division of the cell, as in bacteria.

cross-pollination

Process during which sperm from the pollen of one flower fertilizes the egg of another flower.

dioecious

Species having distinct male and female organisms.

external fertilization

Process during which egg and sperm meet after being released into water.

fertilization

Union of a sperm and egg.

fragmentation

Reproductive process in which a new organism forms from a fragment of a parent organism.

gamete

Sex cell, such as sperm or egg.

gonad

Organ that produces eggs or sperm.

internal fertilization

Process during which egg and sperm meet inside the female, usually after the male's penis deposits sperm into the vagina of the female.

meiosis

Process of cell division during which the chromosome number is halved in order to produce gametes.

ovaries

Female gonads that produce egg.

parthenogenesis

Growth of an unfertilized egg cell into a new organism.

reproduction

Process of forming a new individual.

self-pollination

Process during which sperm from the pollen of one flower fertilizes the egg of the same flower.

sexual reproduction

Process of forming a new individual from two parents.

testes

Male gonads that produce sperm.

zygote

Cell that forms when a sperm and egg unite; the first cell of a new organism.

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Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Aug 30, 2016
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