9A. Asexual vs Sexual Reproduction

Question 1

Gene pool is

Answer 1

all the genes and alleles present in a population.

Question 2

The more alleles in the gene pool

Answer 2

the higher genetic diversity.

Question 3

The broader a population’s gene pool

Answer 3

the higher its chances of survival.

Question 4

Most eukaryotic species employ sexual reproduction as

Answer 4

a reproductive strategy to produce genetically varied offspring

Question 5

Sexual reproduction is

Answer 5

the union of two haploid gametes (fertilisation). Results in a genetically unique diploid zygote.

Question 6

Viviparity happens

Answer 6

After a time of gestation, the embryo develops inside the mother’s body and is born.

Question 7

Oviparity happens when

Answer 7

The embryo develops from nutrients contained within the egg yolk, which is discharged into environment.

Question 8

Why won’t all species animal or plant reproduce in the same way.

Answer 8

Because of the species’ environmental stresses

Question 9

Pollination happens when

Answer 9

Pollen is present. Happens in plants.

Question 10

How does Pollination happen

Answer 10

The embryo that develops becomes a seed, which contains nutrients. From there, an immature plant begins growing into a new plant.

Question 11

Asexual Reproduction
is

Answer 11

the reproduction without the fusion of gametes and no mate is required.

Question 12

All offspring or daughter cells of asexual reproduction are

Answer 12

genetic clones of each other and of the parent.

Question 13

Binary Fission

Answer 13

Prokaryotic organisms can reproduce rapidly by growing and dividing in two.

Question 14

Budding and Fragmentation occurs in

Answer 14

simple eukaryotes

Question 15

Budding

Answer 15

A bud forms due to increased cell growth and breaks away from main organism then develops into a separate organism. Has identical DNA.

Question 16

Vegetative propagation

Answer 16

Plants reproduce without seeds. A vegetative section of the plant breaks away from the original plant and independently growing into a new plant.

Question 17

Fragmentation

Answer 17

Parent breaks into separate fragments, each can independently developing into a separate organism.

Question 18

Advantages of sexual reproduction

Answer 18

• increases genetic diversity
• improves disease-resistance
• reduces risk of offspring developing a genetic disorder

Question 19

Disadvantages of sexual reproduction

Answer 19

• cost of male progeny
• time it takes
• risk of transferable disease during sexual intercourse
• risk of losing offspring to outside influences

Question 20

Advantages of asexual reproduction

Answer 20

• population grows faster
• identical clones to the parent
• doesn’t require a mate to reproduce
• requires little parent investment

Question 21

Disadvantages of asexual reproduction

Answer 21

genetic diversity is low

Question 22

Sporogenesis occurs in

Answer 22

many plants, as well as fungi, algae, and moulds.

Question 23

Sporogenesis

Answer 23

Small haploid units that form on the surface of organism are formed and are released into surroundings. When they land they may then grow into a larger organism.

Question 24

Parthenogenesis is a

Answer 24

rare process of asexual reproduction

Question 25

Parthenogenesis involves

Answer 25

the development of an embryo without the need for a male gamete to fertilise the egg.

Question 26

Parthenogenesis results in

Answer 26

eggs that are produced via mitosis and develop into a new organism that is identical to the female parent.