0% found this document useful (0 votes)
26 views24 pages

Biology Lecture 8

Parmar ssc free notes

Uploaded by

Raju Sarkar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
0% found this document useful (0 votes)
26 views24 pages

Biology Lecture 8

Parmar ssc free notes

Uploaded by

Raju Sarkar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 24

REPRODUCTION

Reproduction
(u- d)

Asexual Sexual
Reproduction Reproduction

"25.6K
REPRODUCTION
Aexualreproducion al reprpgation
a) Only one parent plant is involved. raY Both male and female parents are involved.

Ls Occurs in unisexual plants 6 Occurs in bisexual plants.

oOccurs in lower plants. Occurs in higher plants.

t Reproductive organs are not present. L Fully developed reproductive parts are present

In most of the methods the original parent a Original parents remain alive after process of
disappears. reproduction.

Process like gamete formation or fertilization is


not seen. Fertilization of gametes give rises to zygote.

Characteristics of only one parent is inherited. Characteristics of both parents are inherited.

h)_,No need of seeds. Seeds are used to get new plants from a flower. "5.6K
REPRODUCTION
Sexual Reproduction/ i F YUT:
"It involves two parents.
" You
" Mother
" Father
"Elephant
"Mother Elephant
"Father Elep'ant

"Humans, Dogs,elephants, birds, fishes, plants


REPRODUCTION
Modes of Asexual Reproduction /

M.Binary Fission 1.41_1 fats


w2.Multiple Fission 2.yfs fdisA
w3.Fragmentation 3.fadsA
4.Budding 4.7afaT
5spore Formation
B.Regeneration 6.3eI1T
IVegetative Propagation
DADMAR
REPRODUCTION

1. Binary Fission / TST fd0SA:


Binary Fission in Amoeba
Nucleus Cytoplasm

Parent Elongation of Division of nucleus Two daughter


Amoeba nucleus and cytoplasm cells

DADMA
REPRODUCTION

Binary Fission /gTIfadA:


"Binary fission is the process of
reproduction in which a unicellular
organism divides into two organisms.
"Only for unicellular organisms.

Amoeba Bacteria Leishmani Protozoa Paramecium

DADMAD
REPRODUCTION
2. Multiple Fission / yprfus fadsT
"Unicellular Organism : Malarial Parasite , Plasmodium
MULTIPLE FISSION IN PLASMODIUM

Daughter
Schizont Nuclei
Merozoites

Rupturing
schizont wall
DADMAR
REPRODUCTION Sea cwcuma

3. Fragmentation /fas:
qen lepe coeletat

"Use by simple multicellular likespirogyraand sea anemone.

Spirogyra Sea Anemone

Plant found in water Animal found in water


"25.4K
REPRODUCTION
5. Regeneration /yT:-:
"Simple multicellular like planaria and hydra.

Growth

Amputation

Adult hydra
Growth
Regeneration of
tiny hydra

Planaria Hydra
flatwen plodielwths "5.4K
REPRODUCTION

6. Vegetative Propagation / a e p

Money Rose Potato Bryophyllum


Plant plant
attg
DADMAP
REPRODUCTION
Artificial Vegetative Propagation /

ACutting

1Layering ’ lemon dis


A.Grafting 7

DADMAP
REPRODUCTION
Tissue Culture /3des Hqf:
"ScientificArtificialVegetative Propagation

Ornamental Plants DADMA


REPRODUCTION

A. Layering (simple) B. Moynd Layering f. Gote


Fig: Different methods of layering.
REPRODUCTION
Stigma-st
Pistal -Style
embyo
Ovary Petal Seed)

ovales (eggR)
Yellaw clow.
Sepal Anther
Stamen-Fílament
Poller (inanther)
DADMAD
REPRODUCTION
" (Corn, papaya and cucumberproduce unisexual flowers, whereas mustard,
Sulose, Hibiscus, Rose and Petuniahave bisexual flowers Monoecemus
Both the male and the female unisexual flowers may be present in the same
plant or in different plants.
" Anther contains pollen grains which produce male gametes. A pistil consists
of stigma, style andovary. The ovary contains one or more ovules. The female
gamete or the egg is formed in an ovule. In sexual reproduction a male and a
male gamete fuse to form a zygote.

DADMAP
REPRODUCTION
"The flowers which contain either only the pistil or only the stamens are called
unisexual flowers. The flowers which contain both stamens and pistilare called
bisexual flowers.

Stigma Petal Stigma Petal


Style Style
Anther

Plsti)Ovules! Filament
Starhen Pistil Ovules
Ovary Ovary

Sepal Sepal
Pedicel Pedicel

Figure 20. Complete


structure
flower Imperfect
structure (pistillate) flower
BISEXUAL FLOWER DADMAD
UNISEXUAL FLOWER
REPRODUCTION

Stigma
Pollens
Stigma
Anther

(a) Selfpollination (b) Cross-pollination


Pollination in flower
REPRODUCTION
WHAT ARE FALSE FRUITS

Ovogy
ondy
conudupe
(Co con

e! Banana
PARTHENOCARPIC FRUITS selles
L wthat fetlzahon
REPRODUCTION

Human Reproductive System

Male Female
Reproductive Reproductive
DADMA
system system
REPRODUCTION
formation of
Male
1 GAMETOGENESIS
gametes
female ’Ove
transfer of sperms into the female
2 INSEMINATION genital tract

HRS) 3 FERTILISATION fusion of male and female gametes

IMPLANTATION formation and development of


blastocyst

5 GESTATION embryonic development

6 PARTURITION delivery of the baby

DADMA
REPRODUCTION
Male Reproductive System
Senen Ureter Urinary
bladder
Vas deferens
Seminal
vesicle,
Prostate
Bulbourethral
gland
(Epididymis.
-Urethra
Vasa efferentia
Rete testis

Testicular lobules Testis |SpeM


-Foreskin
Glans penis DADMAV
REPRODUCTION
Female Reproductive Svstem
Fallopian tube

ante)
Ovary
Uterus
taman
Cervix

feale
Male
famekt Vagina
DADMAP)
REPRODUCTION

octus Baby

bedy pats vsttale


REPRODUCTION
liver
Nutata.
placata fcts
stomach
-parçreas
transverse colon

small intestiné placent

-umbillical cord

uterus cervical (mucusy

urinary bladder

rectum
pubic symphysis
urethra
vagina
plactr
NORMAL PREGNANT
EMALE ANATOMY DADMA

You might also like