Lab 6 Shapes Of Animals

Question 0

What do the stomach & intestines do?

Answer 0

Facilitate feeding & digestion

Question 1

What are organs?

Answer 1

Structures in bodies of organisms that perform specific, life sustaining functions.

Question 2

What do the heart & blood vessels do?

Answer 2

They circulate materials throughout the body

Question 3

What do the lungs do?

Answer 3

Supply oxygen to body

Question 4

What do the kidneys do?

Answer 4

Remove toxic substances

Question 5

What organs do jellyfishes not have?

Answer 5

Heart & blood vessels

Question 6

What structures are not in a tapeworm?

Answer 6

Digestive

Question 7

What structures are not in a round worm?

Answer 7

Respiratory organs

Question 8

In animals, what process produces gametes?

Answer 8

Meiosis

Question 9

What is a ratio?

Answer 9

A comparison of one quantity to another quantity

Question 10

Sexual life cycles of microorganisms, fungi, & plants are of 2 principle types

Answer 10

1. The haploid life cycle

2. Alternation of generations

Question 11

What are life cycles characterized by?

Answer 11

Where mitosis occurs

Question 12

What sexual life cycle are most animals characterized by?

Answer 12

Diploid sexual life cycle

Question 13

What is the step by step process of sexual reproduction?

Answer 13

1. Sperm penetrates egg
2. Embryonic development
3. Birth
4. Growth
5. Larval development & metamorphosis (in most species
6. Aging
7. Death

Question 14

What is morphogenetic cell movements?

Answer 14

Converting the fertilized egg into a mature animal.

Question 15

What major group of marine animals do starfish, sea urchins, & & sand dollars belong?

Answer 15

Echinodermata

Question 16

How do Echinoderms reproduce?

Answer 16

They release both sperm & eggs into the environment so that fertilization & development can occur external to the adult organism

Question 17

What color are developing embryos?

Answer 17

Essentially transparent.

Question 18

Why is yolk?

Answer 18

Stored food

Question 19

What are isolecithal eggs?

Answer 19

Eggs with a small amount of yolk that is evenly distributed throughout the cytoplasm

Question 20

What are the stages of cleavage?

Answer 20

1. Unfertilized egg
2. 2 celled embryo
3. 4-celled embryo
4. 8-celled embryo
5. Morula
6. Blastula
7. Early gastrula
8. Late gastrula
9. Late gastrula

Question 21

Identification of unfertilized egg

Answer 21

Single large nucleus containing a prominent nucleolus

Question 22

2 celled organism

Answer 22

Establishes left & right sides of the animal

Question 23

4- celled embryo

Answer 23

Establishes anterior & posterior ends of the animal

Question 24

8-celled embryo

Answer 24

Establishes dorsal & ventral halves of the animal.

Question 25

What is the morula?

Answer 25

Solid grape like cluster of cells

Question 26

What is the embryo composed of in blastula stage?

Answer 26

Single layer of cells which surrounds a fluid filled space

Question 27

What is a blastocoel?

Answer 27

A fluid filled space in an embryo in the blastula stage

Question 28

What is the vegetal hemisphere

Answer 28

The side of the blastocoel with larger cells

Question 29

What is the animal hemisphere?

Answer 29

Side of the blastocoel with smaller cells