Lab 32-33-34 Animal Development and Ecosystems

Question 1

Fertilzed egg

Answer 1

Zygote

Question 2

Fertilized egg divides and cleaves to become

Answer 2

1. Morula
2. Blastula
3. Gastrula

Question 3

Solid ball of cells

Answer 3

Morula

Question 4

Hollow ball of cells

Answer 4

Blastula

Question 5

Fluid filled cavity

Answer 5

Blastocoel

Question 6

Double walled structure with ectoderm and endoderm

Answer 6

Gastrula

Question 7

Germ layers give rise to different tissues and systems

Answer 7

1. Ectoderm
2. Endoderm
3. Mesoderm

Question 8

What does the ectoderm become?

Answer 8

Becomes nervous system, skin and accessory structures (hair, nails, scales, and feathers)

Question 9

What does the endoderm become?

Answer 9

forms lining of digestive and respiratory system

Question 10

What does the mesoderm become?

Answer 10

forms cardiovascular , muscular, reproductive and skeletal systems and connective tissue

Question 11

Development requires three stages

Answer 11

1. Cells divide
2. Differentiation
3. Morphogenesis

Question 12

Cells get larger, divide again

Answer 12

Cells Divide

Question 13

Cells become specialized in function

Answer 13

Differentiation

Question 14

When body parts become shaped and patterned into a certain form

Answer 14

Morphogenesis

Question 15

Energy pyramid consists of

Answer 15

1. Producers
2. First order consumers
3. Second order consumers
4. Third order consumers

Question 16

Number of organisms _______ as you go up the pyramid

Answer 16

Decrease

Question 17

Something added to environment that has an undesirable outcome on all living things

Answer 17

Pollutant

Question 18

________ becomes magnified as you move up the food chain

Answer 18

Effect

Question 19

Causes of aquatic pollution

Answer 19

1. Thermal pollution
2. Acid deposition
3. Cultural eutrophication

Question 20

Water temp rises, dissolved oxygen decreases

Answer 20

Thermal Pollution

Question 21

Kills aquatic invertebrates and decomposers

Answer 21

Acid Deposition

Question 22

The process of cultural eutophication

Answer 22

• Pollutants enter the water due to run off from farms and sewage plants
• Rich in phosphates and nitrates
• Extra nutrients support growth of phytoplankton
• Results in overgrowth of algae
• Plants start dying
• Leads to decrease in oxygen
• Fish die

Question 23

Both organisms benefit from living together

Answer 23

Mutualism

Question 24

Only one member benefits and the other receives no benefit

Answer 24

Commensalism

Question 25

One organism benefits and the other is harmed

Answer 25

Parasitism

Question 26

A ball of cells about the same size as the original zygote

Answer 26

Morula

Question 27

What does the endoderm form?

Answer 27

• Digestive

- Respiratory

Question 28

What does the mesoderm form?

Answer 28

• Cardiovascular
• Reproductive
• Muscular
• Skeletal

Question 29

What does the ectoderm become?

Answer 29

• Nervous system

- Skin

Question 30

• Tissue Layers

- Blue color

Answer 30

Ectoderm

Question 31

• Tissue layers

- Yellow

Answer 31

Endoderm

Question 32

• Tissue layers

- Red

Answer 32

Pink

Question 33

Where does the notochord come from?

Answer 33

Mesoderm