BIO044 (LAB) MOD 4 ANIMAL REPRODUCTION

Question 1

Makes identical copies (clones) of the parent.

Answer 1

Asexual Reproduction

Question 2

Asexual Reproduction:

Answer 2

• Fission
• Budding
• Fragmentation
• Regneration

Question 3

A very common form of asexual reproduction is found in protozoans and simple animals.

Answer 3

Fission

Question 4

The body simply divides into 2 identical copies

Answer 4

Fission

Question 5

A common type of asexual reproduction especially in colonial animals.

Answer 5

Budding

Question 6

A new offspring begins as a small outgrowth of the parent and may either remain attached and form a colony, or break away and begin an independent life.

Answer 6

Budding

Question 7

Some animals when broken or shredded into many small (sometimes microspic) pieces, each piece can regrow into a complete animal.

Answer 7

Fragmentation

Question 8

This process is mostly commonly used not as a form of reproduction but to replace missing or damaged parts.

Answer 8

Regeneration

Question 9

Involves the fertilization of a females egg by a male’s sperm.

Answer 9

Sexual Reproduction

Question 10

Provides much of the genetic variation required for evolution and adaptation.

Answer 10

Sexual Reproduction

Question 11

Sexual Reproduction:

Answer 11

• Monoecious Animals (Hermaphrodites)
• Dioecious Animals
• Protandry
• Sexual Dimorphism
• Parthenogenesis (“virgin birth”)

Question 12

Containing both and female reproductive organs. About 15% of animals, especially those that are sessile (nonmotile) or parasitic.

Answer 12

Monoecious Animals (Hermaphrodites)

Question 13

These are organisms that produce either male or female reproductive organs and gametes but never both at the same time.

Answer 13

Dioecious Animals

Question 14

Is the ability in some animals to switch their sex based on environmental cues such as changes in temperature. Usually seen in some amphibians and fishes.

Answer 14

Protandry

Question 15

The male from the female of a species by outward appearance.

Answer 15

Sexual Dimorphism

Question 16

In other dioecious Animals the males and females are not identical, but differ in appearance, thus showing_______.

Answer 16

Sexual Dimorphism

Question 17

Result in differences in structures and colors between genders.

Answer 17

Sexual Dimorphism

Question 18

This process only regularly occurs in nonhuman animals, both vertebrates and invertebrates.

Answer 18

Parthenogenesis (“virgin birth”)

Question 19

In ducks. Male birds tend to have bright feathers.

Answer 19

Sexual Dimorphism

Question 20

Example Sexual Dimorphism of roundworm:

Answer 20

Ascaris lumbricoides

Question 21

Example of monoecious animals (hermaphrodites):

Answer 21

Earthworms

Question 22

Hydra vulgaris (Phylum Cnidaria) mode of reproduction?

Answer 22

Budding

Question 23

Fromia ghardaqana (Phylum Echinodermata) mode of reproduction?

Answer 23

Regeneration

Question 24

Sycon spp (Phylum Porifera) mode of reproduction:

Answer 24

Fragmentation

Question 25

Dugesia spp. (Phylum Platyhelminthes) mode of reproduction:

Answer 25

Regeneration