BIOL 111 Study Guide - Final Guide: Gastrodermis, Mesoglea, Cardiac Muscle

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BIOL 111 Full Course Notes

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Capture prey by using toxic stings from within their cnidocytes. Food enters into the mouth and then into the gastrovascular cavity where intracellular digestion occurs by the gastrodermal cells. Indigestible food is then voided out of the mouth. Uses basal disc (foot) to remain attached to the substrate. Moves by gliding, somersaulting and floating on bubbles of gas. Sexual reproduction: involves the union of a sperm and egg (gametes) Sperm and egg are located in the gonads (small mounds found in the epidermis) Sperm is produced in the testes (upper surface, close to the tentacles) One egg is produced in each ovary (lower surface, close to the foot) Ovaries are generally bigger than the testes. Hermaphrodites: organism has the capability to produce both types of gonads and gametes. Using occurs in the fall, sperm is released into the water and enters the ovary through a hole in the epidermis, in order to reach the egg.

Related Questions

What is the purpose of meiosis?

To enable an organism to produce gametes

To allow for growth

To allow an organism to replace damaged cells

Question 2

Select one answer.

10 points

Mitosis results in ________ and meiosis results in ________.

gametes, somatic cells

gametes, gametes

somatic cells, somatic cells

somatic cells, gametes

Question 3

Select one answer.

10 points

Which of the following tasks is accomplished through the processof meiosis?

Cell growth

Production of sperm or eggs

Replacement of dysfunctional cells

Question 4

Select one answer.

10 points

What advantage does sexual reproduction have over asexualreproduction?

All other selections are true.

Sexual reproduction provides more genetic variability

Sexual reproduction doubles the number of chromosomes in aspecies

Sexual reproduction is more efficient

Question 5

Select one answer.

10 points

Crossing over occurs between homologous chromosomes during whatstage of cell division? (Read each option carefully.)

Prophase I of meiosis

Prophase of mitosis

Prophase II of meiosis

Interphase

Question 6

Select one answer.

10 points

Corn has 20 chromosomes. When corn undergoes meiosis how manychromosomes are found in the gametes?

Question 7

Select one answer.

10 points

Homologous chromosomes separate and are pulled to opposite sidesof the cell during what stage of cell division? (Read each optioncarefully.)

Metaphase I of meiosis

Anaphase II of meiosis

Anaphase I of meiosis

Anaphase of mitosis

Question 8

Select one answer.

10 points

Mitosis results in ______ cells and meiosis results in _______cells.

diploid, haploid

haploid, diploid

diploid, diploid

haploid, haploid

jadepug655

Match the terms to the definitions provided.

Question 1 options:

	gamete
	somatic cells
	zygote
	sexual reproduction

1.	Reproductive life cycle that involves an alternation between haploid and diploid cells
2.	A single cell with a diploid number of chromosomes resulting from the fusion of an egg and a sperm.
3.	Cells (egg or sperm) resulting from a meiotic division of germ-line cells
4.	The non-reproductive cells found in embryos and mature individuals

Question 2 (5 points)

Match the terms to the definitions provided.

Question 2 options:

	syngamy
	haploid
	meiosis
	diploid
	germ-line cells

1.	The cells that will eventually undergo meiosis to produce gametes.
2.	The number of chromosomes found in gametes (eggs or sperm).
3.	The process by which two haploid gametes fuse to form a new diploid cell.
4.	A specialized reduction division that produces cells with half the normal number of chromosomes.
5.	Two sets of chromosomes present in the somatic cells of adult individuals.

Which of the following statements is NOT TRUE about chromosomes?

Prokaryotes have a singel, circular chromosome

Eukaryotes have multiple, linear chromosomes.

Human cells normally 23 pairs of chromosomes.

Eukaryote chromosomes are composed of only DNA

Which of the following is NOT TRUE about reproduction?

Eukaryotes life cycles include a haploid and diploid phase.

Prokaryotes reproduce asexually.

Eukaryotes can propagate by asexual or sexual reproduction.

Prokaryotes typically reproduce slower than eukaryotes.

Which of the folllowing animal cells is most likely haploid?

nerve cell

muscle cell

sperm cell

liver cell

When human gametes fuse, they form a _____.

		Haploid egg
		Diploid zygote
		Haploid zygote
		Triploid egg

BIOL 111 Study Guide - Final Guide: Gastrodermis, Mesoglea, Cardiac Muscle

BIOL 111 Full Course Notes

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