unit 4 - cell division and reproduction - test #4 quizlet
If an animal produces many young asexually, and if they remain attached to the original animal, the resulting mass of animals is termed a v.
colony
The pine cone seed is the:
container for the fertilized egg
Variations of traits within a population are the result of genetic recombination of v genes.
pre-existing
For an animal living a diplontic cycle, meiosis is limited to:
producing gametes
Angiosperms produce their gametes in flowers.
True
External fertilization is not an efficient method of reproduction.
True
Pollination of a flower requires that the pollen produced in the v be deposited on the v.
anther, stigma
Mitosis is also referred to as:
asexual reproduction
Genetic recombination results from:
new combinations of genes from two parents
The phase during mitosis when chromosomes move into the center of the cell is:
metaphase
Asexual reproduction is based on a type of cell division known as v.
mitosis
The stage of mitosis when the chromatin shortens and thickens to form distinct chromosomes is:
prophase
v is the division of a parent cell into a number of daughter cells all at once.
Multiple fission
During prophase, each chromosome in the pair is attached to the other by the v.
centromere
An advantage of grafting is to increase the quality of the rootstock.
False
Differentiation of cells changes the nucleic information.
False
The genetic material appearing like a thread in the nucleus is called v.
chromatin
The production of cells during mitosis into specialized function is called v.
differentiation
Variation produced by sexual reproduction starts:
during meiosis
When are the duplicated homologous pairs of chromosomes separated?
during the second division of meiosis
(Select all that apply.) Fertilization occurs when the of gametes combine.
genes, DNA, chromosomes
A fertilized egg receives one set of v chromosomes from the sperm.
haplold
An animal with a haplontic life cycle reproduces by:
isogamous fertilization
The condition common to protozoa whereby the cell of the organism acts as a gamete is v.
isogamy
Four principal advantages of asexual reproduction are:
reproduction at a rapid rate, reproduction in harsh climates, reproduction with only one parent, reproduction of genetically identical offspring
The part of a desired plant inserted into rootstock during grafting is called the v.
scion
The pistil of a flower consists of:
style, ovary, stigma
A fleshy, enlarged end of rhizome or stolon is called a v.
tuber
Large variations in a crop may be developed by employing asexual reproduction.
False
The petals of a flower have no reproductive function.
False
Some plants and animals can reproduce both asexually and sexually.
True
The human gametes are:
oogamous