Reproduction In Organisms Zoology Part Flashcards Preview

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Flashcards in Reproduction In Organisms Zoology Part Deck (149)
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1

Definition of life span

Period from birth to natural death

2

Does life span depend on body size

Life span does NOT depend on body size

3

Life span of may fly

1 day

4

Butterfly life span

1-2 weeks

5

Fruit fly life span

1 month

6

Crow life span

15 years

7

Parrot life span

140 years

8

Cow life span

20-25 years

9

Dog life span

20-30 years

10

Horse life span

60 years

11

Crocodile life span

60 years

12

Elephant life span

60-70years

13

Tortoise life span

100-150 years

14

Life span is a characteristic of-

Species

15

Define maximum life span

Maximum number of years survived by any member of species

16

Average life span definition

Average number of years survived by members of a population

17

Define life expectancy

No of years an individual can expect to live

18

_____ is a feature of population

Life expectancy

19

Life span depends on which features (4)

Genetics
Morphology
Physiology
Environment

20

Name 4 stages of life

1. Juvenile stage
2.reproductive phase/maturity
3. Senescence stage
4.death

21

Which phase of life has max growth

Juvenile phase

22

Enzymatic reactions slow down during ____

Aging

23

Features of reproduction

DNA replication
Protein synthesis takes place
Protoplasm formation
Gamete or spore formation
Young ones produced

24

Define clones

Phenotypically and genotipically similar organisms (under similar environment conditions)

25

Asexual reproduction results in ____ formation

Clone

26

Variations may be found among clones called

Somaclonal variations

27

GxE=

(Genotype, environment)

P (phenotype is dependant on genotype and environment)

28

3 other names for asexual reproduction

Agamogenisis

Agamogeny

Somatogenic reproduction

29

4 advantage of asexual reproduction

Rapid
Uniparental
Simple
Clones formed

30

Variations among asexually reproducing organisms may be seen due to ___ or ____

Environment conditions
Mutation