Reproduction in Animals

Question 1

Reproduction can be in 2 ways

Answer 1

Sexual
Asexual

Question 2

Types of Asexual Reproduction

Answer 2

Budding
Binary Fission
Parthenogenesis
Fragmentation

Question 3

Definition of Budding:

Answer 3

The part of the animal’s body developing into a new individual

Question 4

Binary Fission’s Definition:

Answer 4

One individual splits into two equal sized individuals

Question 5

Fragmentation definition

Answer 5

Snapping one part of a body. The part snapped will grow into another individual

Question 6

Parthenogenesis definition

Answer 6

Unfertilized egg cell develops into an individual without interference of sperm

Question 7

Sexual reproduction requires

Answer 7

Gamete

Question 8

Process of producing gamete

Answer 8

Gametogenesis

Question 9

Types of gametogenesis

Answer 9

Spermatogenesis
Oogenesis

Question 10

Spermatogenesis produces

Answer 10

Sperm

Question 11

Oogenesis produces

Answer 11

Oocyte

Question 12

Oogenesis produces

Answer 12

Oocyte

Question 13

Advantage of sexual reproduction:

Answer 13

Done because it removes harmful genes for the next generation
Produce genetic variation in offspring

Question 14

Germinal Epithelial cell is also known as

Answer 14

Primordial Germ Cell

Question 15

Steps of Spermatogenesis

Answer 15

1. Primordial germ cell divides into spermatogonia stem cell through Mitosis
2. Spermatogonia stem cell performs mitosis to turn into spermatogonia
3. Spermatogonia performs mitosis to form primary spermatocyte
4. Primary spermatocyte performs Meiosis I to form secondary spermatocyte
5. Secondary spermatocyte performs Meiosis II to produce 2 spermatids
6. Spematid is processed into sperm(differentiation)

Question 16

Process of Oogenesis

Answer 16

1. Primordial germ cell performs Mitosis to form Oogonia
2. Oogonia divides into primary oocyte
3. Primary oocyte performs Meiosis I to form secondary oocyte
4. Secondary Oocyte performs Meiosis II but paused, waiting for sperm
5. If oocyte is fertilized, becomes baby, If not fertilized, girls has menopause

Question 17

4 Differences of Spermatogenesis and Oogenesis

Answer 17

1. Spermatogenesis begins at puberty and is continuous (Never Ends)
   Oogenesis begins in the fetus but pauses in Certain stages
2. Spermatogenesis has no pauses
   Oogenesis pauses in prophase I until puberty, Pauses when one egg cell enters Metaphase II
3. Spermatogenesis ends when we die
   Oogenesis ends at ±50 years old
4. In spermatogenesis 1 precursor cell becomes 4 sperm cell
   In Oogenesis 1 precursor cell becomes only 1 egg cell