SEXUAL REPRODUCTION IN PLANTS

PRESENTATION BY :-PARNIKA VAID

IN THIS PRESENTATION YOU

WILL SEE WHAT IS SEXUAL REPRODUTION… TWO TYPES OF FLOWERS, THEIR

OTHER NAMES ,LOGICS ETC. PARTS OF A FLOWER MALE ORGANS,

FEMALE ORGANS , STRUCTURE OF A FLOWER.

TYPES OF POLLINATION , AGENTS OF POLLINATION AND SO ON

SEXUAL REPRODUCTION IS CARRIED OUT IN

FLOWERING PLANTS. FLOWERS ARE THE

REPRODUCTIVE ORGANS OF A PLANT.

FLOWER CONTAINS BOTH MALE AND FEMALE REPRODUCTIVE CELLS CALLED GAMETES.

BISEXUAL FLOWERS

FLOWERS HAVING BOTH MALE AND FEMALE CELLS ARE CALLED AS COMPLETE OR BISEXUAL FLOWERS.

UNISEXUAL FLOWERS

FLOWERS HAVING EITHER MALE OR FEMALE GAMETES ARE KNOWN AS INCOMPLETE OR BISEXUAL FLOWERS.

SUCH FLOWERS ARE FOUND IN CORN AND PAPAYA PLANTS.

PARTS OF FLOWER

SEPALS PETALS STAMENS PISTILS

STAMENS THIS IS CALLED AS MALE

ORGAN. THEY BEAR ANTHERS THAT

CONTAIN POLLEN GRAINS. POLLEN GRAINS CONTAIN

MALE GAMETES IN THEM.

PISTIL THIS IS CALLED AS

FEMALE ORGAN. PISTIL IS DIVIDED INTO

STIGMA, STYLE AND OVARY.

OVARY CONTAINS FEMALE GAMETES CALLED OVULES.

SEEDS ARE FORMED IN

SEXUAL REPRODUCTION.

NEW PLANTS ARE DEVELOPED FROM

THESE SEEDS.

FLOWERS AFTER

POLLINATION AND

FERTILIZATION BECOME

FRUITS.

POLLINATION IT IS A PROCESS OF SEED

FORMATION. POLLINATION IS THE TRANSFER OF POLLEN

GRAINS TO THE STIGMA OF THE PISTIL.

TYPES OF POLLINATION

CROSS POLLINATION

SELF POLLINATION

SELF POLLINATION

IN SELF POLLINATION POLLEN GRAINS GET TRANSFERRED TO THE STIGMA OF SAME FLOWER.

CROSS POLLINATION

IN CROSS POLLINATION POLLEN GRAINS ARE TRANSFERRED FROM THE ANTHER OF ONE

FLOWER TO THE STIGMA OF ANOTHER FLOWER OF THE SAME KIND.

AGENTS OF POLLINATION

THE EXTENAL AGENTS WITH WHOSE HELP POLLINATION TAKES PLACE.

EG: WIND WATER

INSECTS ANIMALS

THANK YOU