lesson 17 unit 4 A

Refers to grown or mature animals or plants.

adult

The term life cycle includes the entire process of:

adults producing gametes fertilization the growth of the offspring to adulthood

Something which lives in or pertains to water. An aquatic organism lives in water.

aquatic

Diplontic animals usually produce both eggs or sperm which are .

oogamous

Some cells of the body like neurons and brain cells do not reproduce themselves.

True

By what mechanism does a diplontic animal grow after fertilization?

mitosis

By what reproductive mechanism does a haplontic animal grow?

initially by meiosis, then by mitosis

A group or mass of cells having a common function.

tissue

A group of tissues with a specific function in a part of the body.

organ

Differentiation of cells changes the nucleic information.

False

The mechanisms controlling cell differentiation have been determined by microbiologists.

False

A process changing cells or organisms from a generalized to a more specific or specialized condition. It often involves a reduction of the ability to reproduce or divide, and is usually not reversible.

differentiation

The production of cells during mitosis into specialized function is called .

differentiation

A type of life cycle in which meiosis produces gametes and the bulk of the life cycle is passed as a diploid. Adults are diploid.

diplontic

A zygote will develop into an during the early stages.

embryo

An early stage in the development of an animal or plant.

embryo

The kind of fertilization found in the majority of aquatic animals is fertilization.

external

A type of mating pattern in which eggs and sperm are released into the water after the mating partners come near one another. Fertilization occurs outside the body of the female.

external fertilization

The only portion of a haplontic life cycle that is diploid is the .

fertilized egg

A life cycle in which meiosis occurs shortly after fertilization, and most of the life cycle is passed as a haploid.

haplontic

The basic kind of life cycle found in the simplest animals is .

haplontic

A mating pattern in which the male and female come close together and the male introduces the sperm into the body of the female where fertilization occurs.

internal fertilization

A haplontic cycle animal initially reproduces by:

isogamous fertilization

The idea that organisms reproduce from adult, to gametes, and back to adult again in a cycle or cyclical pattern.

life cycle

A zygote becomes a mature adult through the process of .

mitosis

For an animal living a diplontic cycle, meiosis is limited to:

producing gametes

Something which occurs on the land or refers to the land.

terrestrial

Specialized cells which perform a particular function form .

tissues