Lab 6 Shapes Of Animals Flashcards Preview

organismal Biology > Lab 6 Shapes Of Animals > Flashcards

Flashcards in Lab 6 Shapes Of Animals Deck (30)
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0
Q

What do the stomach & intestines do?

A

Facilitate feeding & digestion

1
Q

What are organs?

A

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

2
Q

What do the heart & blood vessels do?

A

They circulate materials throughout the body

3
Q

What do the lungs do?

A

Supply oxygen to body

4
Q

What do the kidneys do?

A

Remove toxic substances

5
Q

What organs do jellyfishes not have?

A

Heart & blood vessels

6
Q

What structures are not in a tapeworm?

A

Digestive

7
Q

What structures are not in a round worm?

A

Respiratory organs

8
Q

In animals, what process produces gametes?

A

Meiosis

9
Q

What is a ratio?

A

A comparison of one quantity to another quantity

10
Q

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

A
  1. The haploid life cycle

2. Alternation of generations

11
Q

What are life cycles characterized by?

A

Where mitosis occurs

12
Q

What sexual life cycle are most animals characterized by?

A

Diploid sexual life cycle

13
Q

What is the step by step process of sexual reproduction?

A
  1. Sperm penetrates egg
  2. Embryonic development
  3. Birth
  4. Growth
  5. Larval development & metamorphosis (in most species
  6. Aging
  7. Death
14
Q

What is morphogenetic cell movements?

A

Converting the fertilized egg into a mature animal.

15
Q

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

A

Echinodermata

16
Q

How do Echinoderms reproduce?

A

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

17
Q

What color are developing embryos?

A

Essentially transparent.

18
Q

Why is yolk?

A

Stored food

19
Q

What are isolecithal eggs?

A

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

20
Q

What are the stages of cleavage?

A
  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
21
Q

Identification of unfertilized egg

A

Single large nucleus containing a prominent nucleolus

22
Q

2 celled organism

A

Establishes left & right sides of the animal

23
Q

4- celled embryo

A

Establishes anterior & posterior ends of the animal

24
Q

8-celled embryo

A

Establishes dorsal & ventral halves of the animal.

25
Q

What is the morula?

A

Solid grape like cluster of cells

26
Q

What is the embryo composed of in blastula stage?

A

Single layer of cells which surrounds a fluid filled space

27
Q

What is a blastocoel?

A

A fluid filled space in an embryo in the blastula stage

28
Q

What is the vegetal hemisphere

A

The side of the blastocoel with larger cells

29
Q

What is the animal hemisphere?

A

Side of the blastocoel with smaller cells