Biology of Reproduction

Question 1

What is reproduction?

Answer 1

It is the ability of living organisms to produce new individuals

Question 2

The types of reproduction

Answer 2

Sexual and Asexual

Question 3

How many Parents are needed in Sexual and Asexual Reproduction?

Answer 3

Sexual- 2

Asexual-1

Question 4

Type of Reproductive cell [unit] in each kind of reproduction

Answer 4

Sexual- Gamete

Asexual- Somatic cell or it’s group

Question 5

What is the production and development of sexual cells?

Answer 5

Gametogenesis

Question 6

Kinds of Asexual Reproduction

Answer 6

Budding, Fragmentation, Vegetative, Sporogony, Polyembryony

Question 7

Kinds of sexual Reproduction

Answer 7

Unicellular- Conjugation, Copulation

Multicellular- With and without Fertilization.

Question 8

What is Parthenogenesis?

Answer 8

Reproduction without fertilization.

Question 9

The cell division in asexual and sexual reproduction

Answer 9

Asexual- Mitosis

Sexual- Mitosis and Meiosis.

Question 10

What are the kinds of Gametogenesis?

Answer 10

Spermatogenesis and Oogenesis

Question 11

Stages of Spermatogenesis

Answer 11

Multiplication, Division, Growth and Formation.

Question 12

What are the stages of Oogenesis?

Answer 12

Multiplication, Growth and Maturation.

Question 13

Females are born with how many Oocytes?

Answer 13

400000

Question 14

What hormone triggers Ovulation?

Answer 14

Luteinizing Hormone

Question 15

What is the complete fusion of two gametes to form a Zygote?

Answer 15

Copulation

Question 16

What is conjugation?

Answer 16

It is the temporary fusion of two parents which exchange their male pronuclei and then separate. It can be found in paramecium and other ciliates.

Question 17

What is the kind of asexual reproduction in which the individuals reproduce by spores

Answer 17

Sporogy

Question 18

What is the fusion of the male and female gametes?

Answer 18

Fertilization.

Question 19

The type of cells in each stage of Spermatogenesis includes

Answer 19

Multiplication Stage- Spermatogonium
Growth Stage- Primary Spermatocyte
Maturation Stage-Secondary Spermatocyte
Formation Stage- Spermatozoa

Question 20

What is the kind of reproduction in which the daughter individual of a colony develops from it’s Paternal part.

Answer 20

Vegetative Propagation.

Question 21

Armadillo’s exhibit what kind of Asexual reproduction and how?

Answer 21

Polyembryony. They produce four young ones per Zygote.

Question 22

Hydra and Scypha exhibit what kind of budding?

Answer 22

External budding which occurs when buds arise from the surface of their parental body

Question 23

In what case can humans be said to reproduce asexually.

Answer 23

In the reproduction of identical twins.

Question 24

What gender is said to be less busy in Meiosis?

Answer 24

Female gender

Question 25

What Hormone stimulates the follicles of the ovary to ripen?

Answer 25

FSH- Follicle stimulating Hormone.

Question 26

List the Kinds of Ovule with examples

Answer 26

Oligoletcithal[small amount of Yolk] e.g mammals. Mesolecithal [average amount of Yolk] e.g Amphibians and Insects. Polylecithal [High amount of yolk.] e.g aves, reptiles, pisces

Question 27

List the steps in Fertilization.

Answer 27

``` Egg activation Acrosome reaction Cortex reaction Fusion of the egg and sperm nuclei Zygote formation. ```

Question 28

In what kind of Copulation are the fusing gametes alike morphologically and physiology

Answer 28

Isogamy e.g monocysts

Question 29

In what Kind of Copulation are the fusing gametes different in form, size and structure.

Answer 29

Anisogamy e.g Humans

Question 30

What is Oogamy?

Answer 30

It is when the fusing gametes are different in form, and size. One is big and inactive, while the other is small and active.

Question 31

Male and female gametes are referred to as what and what respectively?

Answer 31

Microgametes and Macro gametes /Ova

Question 32

Liver flukes and earthworms are termed as what kind of sexual organisms?

Answer 32

Hermaphrodites/Bisexual. They have both male and female gametes

Question 33

What is Plasmotomy?

Answer 33

It is the division of a multinucleate parent cell into multinucleate daughter cells without the division of the nucleus. e.g Opoline and Pelomyxa

Question 34

Organisms with one gametes are referred to as?

Answer 34

Unisexual or dioeceus.

Question 35

During Spermatogenesis, developing cells keep their heads embedded in the(......................) to draw nutrients from them

Answer 35

Sertoli Cells

Question 36

Development of cells take about?

Answer 36

Two months

Question 37

Sexual differentiation begins when?

Answer 37

During Gestation.