ch 1 reproduction in organisms Flashcards
1
Q
reproduction
A
a biological process in which an organism gives rise to young ones (offspring) similar to itself
2
Q
life cycle of elephant
A
60-90 yrs
3
Q
rose
A
5-7 years
4
Q
dog
A
14-20 years
5
Q
butterfly
A
1-2 weeks
6
Q
crow
A
15 years
7
Q
banana tree
A
25 years
8
Q
cow
A
20-25 years
9
Q
parrot
A
140 years
10
Q
crocodile
A
60 years
11
Q
horse
A
60 years
12
Q
fruit fly
A
30 days
13
Q
rice plant
A
3-4 months
14
Q
tortoise
A
100-150 years
15
Q
banyan tree
A
200 years
16
Q
asexual reproduction
A
offspring is produced by a single parent with or without the involvement of gamete formation
17
Q
sexual reproduction
A
two parents (opposite sex) participate in the reproductive process and also involve fusion of male and female gametes
18
Q
yeast
A
budding
19
Q
amoeba
A
binary fission
20
Q
chlamydomonas
A
zoospores
21
Q
penicillium
A
conidia
22
Q
hydra
A
buds
23
Q
sponge
A
gemmules
24
Q
paramoecium
A
binary fission
25
ameoba under unfavorable conditions
amoeba withdraws it's pseudopodia and secretes a THREE LAYERED hard covering or cyst around itself (encystation).
when favorable conditions return, they multiply by multiple fission and produce many minute amoeba or PSEUDOPODIOSPORES; cyst wall bursts out and spores are liberated (SPORULATION)
26
potato
eyes
27
ginger
rhizome
28
agave
bulbil
29
bryophyllum
leaf buds
30
water hyacinth
offset
31
zoospores
asexual, microscopic motile structures
32
hydra
fragmentation
33
juvenile/vegetative stage
stage of growth and maturity before they can reproduce sexually
34
bamboo
flowers once in a lifetime (monocarpic), generally after 50-100 years
35
strobilanthus kunthiana (neelakuranji)
once every 12 years
36
oestrus cycle
non primate mammals
| no monthly recurrence
37
menstrual cycle
primates
| monthly recurrence
38
seasonal breeders
exhibit reproductive cycles only during favorable seasons
39
continuous breeders
reproductively active throughout their reproductive phase
40
pre fertilization events
1. gametogenesis
| 2. gamete transfer
41
homogametes/isogametes
same or similar gametes
42
heterogametes
different gametes morphologically
43
male gamete
antherozoid or sperm
44
female gamete
egg or ovum
45
bisexual
both male and female reproductive structures on same plant
46
unisexual
male and female reproductive structures on different plants
47
monoecious/homothallic (in fungi and plants)
bisexual condition
48
dioecious/heterothallic
unisexual condition
49
male flower
staminate
50
female flower
pistillate
51
monoecious plants
cucurbits and coconuts
| chara
52
dioecious plants
papaya and date palm
| marchantia
53
bisexual animals (hermaphrodites)
earthworms, sponge, tapeworm, and leech
54
unisexual animals
cockroach
55
haploid parental body
monera, fungi, algae, bryophytes
56
diploid parental body
pteridophytes, gymnosperms, angiosperms, most animals
57
bisexual flower
sweet potato
58
chromosome number in humans
46
59
house fly
12
60
rat
42
61
dog
78
62
cat
38
63
fruit fly
8
64
ophioglossum (a fern)
1290
65
apple
34
66
rice
24
67
maize
20
68
potato
12
69
butterfly
380
70
onion
16
71
meiocytes
diploid
| gamete mother cell
72
parthenogenesis
female undergoes development to form new organisms without fertilisation
rotifers, honeybees, some lizards and birds (turkey)
73
external fertilisation
bony fishes
| frogs
74
zygote
vital link that ensures continuity of species between organisms of one generation and the next
75
oviparous animals
calcareous shell
| reptiles and birds
76
viviparous organisms
chances of survival of young ones are greater
77
zygote
embryo
78
ovules
seed
79
ovary
fruit
