Unit 3: Classification Schemes

Question 1

Haploid Cells

Answer 1

Cell containing one set of chromosomes

Question 2

Diploid Cells

Answer 2

Cell containing two sets of chromosomes

Question 3

Which organisms best fit this life cycle?

Fertilization –> Zygote –> Mitosis –> Diploid multicellular organism (sporophyte) –> Meiosis –> Release of spores + mitosis –> Haploid multicellular organism (gametophyte) –> Mitosis + intro of gametes –> Fertilization

Answer 3

Plants

Question 4

Which organisms best fit this life cycle?

Fertilization –> Zygote + Mitosis –> Diploid multicellular organism –> Meiosis –> Releasing and introduction of gametes –> Fertilization

Answer 4

Animals

Question 5

Chorion

Answer 5

Outermost membrane surrounding embryo, promotes gas exchange

Question 6

Amnion

Answer 6

Innermost membrane surrounding embryo, prevents desiccation

Question 7

Allantois

Answer 7

Fetal membrane below chorion that collects waste from embryo

Question 8

Yolk Sac

Answer 8

Membranous sac containing yolk attached to embryo, provides nourishment

Question 9

In mammals, is the yolk sac smaller than in reptiles?

Answer 9

Yes

Question 10

Ammonia is released by ____ _____, whereas urea is released by _______, and uric acid by ________.

Answer 10

Aquatic animals
Mammals
Birds

Question 11

Endotherm

Answer 11

Organisms that produce their own heat

Question 12

Ectotherm

Answer 12

Organisms that rely on heat from environment

Question 13

Homeotherm

Answer 13

Organisms that keep body temperature constant

Question 14

Heterotherm

Answer 14

Organisms that allow body temperature to fluctuate

Question 15

In terms of homeostasis, most birds and mammals are what?

Answer 15

Endothermic heterotherms

Question 16

Anapsid Skulls contain ___ hole(s), synapsid skulls contain ____ hole(s), and diapsid skulls contain ___ hole(s).

Answer 16

Zero
One
Two