bio test 3 expert ta animal and plant reproduction

Which form of reproduction is thought to be best in a stable environment?

asexual

Which form of reproduction can result from damage to the original animal?

fragmentation

Which form of reproduction is useful to an animal with little mobility that reproduces sexually?

hermaphroditism

External fertilization occurs in which type of environment?

aquatic

Genetically unique individuals are produced through

sexual reproduction

Which of the following cells in spermatogenesis is diploid?

primary spermatocyte

How many eggs are produced as a result of one meiotic series of cell divisions?

one

Reproduction may be __ when one individual produces genetically identical offspring, or __ when the genetic material from two individuals is combined to produce genetically diverse offspring. Asexual reproduction occurs by subdivision of the parent's body by fission, budding, or . Sexual reproduction involves the of sperm and eggs, which may occur either within the __ of a parent or externally in the . An individual parent may be male, female or ; it may even start out as one sex and __ during its life.

asexual, sexual, fragmentation, joining, body, environment, both , switch

In spermatogenesis, spermatids are produced from each primary spermatocyte via _

4; meiosis

In which structure would a corpus luteum be located?

ovary

A polar body:

is essentially a discarded set of chromosomes

The formation of egg cells is called:

oogenesis

During spermatogenesis, sperm cells are produced from each primary spermatocyte.

4

Pollen grains develop in which structure?

anther

In a plant's male reproductive organs, development of pollen takes place in a structure known as the .

microsporangium

The stamen consists of a long stalk called the filament that supports the

anther

The pollen lands on which part of the flower?

stigma

After double fertilization, a zygote and form.

endosperm

The fertilized ovule gives rise to the .

seed

Which of the following is an advantage of asexual reproduction?

When cuttings or buds are taken from an adult plant or plant parts, the resulting plant will grow into an adult faster than a seedling.

The sporophytes differentiate specialized reproductive structures called , which are dedicated to the production of spores. The microsporangium contains microspore mother cells, which divide by to produce microspores. The microspores develop into male gametophytes that are released as pollen. The megasporangium contains megaspore mother cells, which divide by meiosis to produce haploid megaspores. A megaspore develops into a female containing a haploid egg. A new diploid is formed when a male gamete from a pollen grain enters the ovule sac and fertilizes this egg.

sporangia, meiosis, haploid, gametophyte, sporophyte

The male gametophyte in plants is known as:

pollen

In which type of plant does the female gametophyte reside in an enclosed structure known as an ovule?

angiosperms

A diploid fertilized egg is termed a(n):

zygote

In flowering plants, how many sperm are released from each pollen grain as a result of pollination?

2

In flowering plants, an embryo sac consists of:

seven haploid cells with one nucleus each, and one cell with two nuclei.

Where is pollen produced by a flowering plant?

anther

While plants produce haploid sperm and eggs that fuse to form diploid zygotes, they produce their gametes by mitosis instead of meiosis. How is this possible?

Gametes are produced by haploid gametophytes.