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10 Cards in this Set

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WHY ARE FLOWERS IMPORTANT IN A PLANT?

BECAUSE FLOWERS ARE REPRODUCTIVE


STRUCTURES OF THE PLANTS. THEY CONTAIN


THE REPRODUCTIVE ORGANS WHICH


PRODUCE THE MALE AND FEMALE SEX CELLS,


OR GAMETES. MALE GAMETES ARE


CONTAINED IN POLLEN GRAINS, AND FEMALE


GAMETES ARE OVULES.



WHAT IS POLLINATION? STATE ITS TYPES.

TRANSFER OF POLLEN GRAINS FROM ANTHER


TO THE STIGMA IS CALLED POLLINATION.


THERE ARE 2 DIFFERENT TYPES:


SELF-POLLINATION AND CROSS-POLLINATION.

EXPLAIN CROSS-POLLINATION AND


SELF-POLLINATION.

CROSS-POLLINATION IS A TRANSFER OF


POLLEN FROM ANTHER TO STIGMA OF TWO


DIFFERENT FLOWERS OF DIFFERENT PLANTS


BUT SAME SPECIES. SELF-POLLINATION IS


TRANSFER OF POLLEN FROM ANTHER TO


STIGMA OF THE SAME FLOWER OR DIFFERENT


FLOWER OF THE SAME PLANT OF THE SAME


SPECIES.

WHAT IS WIND POLLINATION?

WIND POLLINATION IS WHEN THE POLLEN


GRAINS OF SOME FLOWERS ARE NOT CARRIED


BY THE INSECTS, BUT BY THE WIND.


THE GRAINS OF THOSE FLOWERS ARE NOT


STICKY, BUT SMOOTH AND VERY LIGHT SO


THAT THEY CAN BE BLOWN OVER LONG


DISTANCES BY AIR CURRENTS.

WHAT ARE THE FEATURES OF WIND-POLLINATED


FLOWERS?

* SMALL FLOWERS


* ANTHERS AND STIGMAS HANG OUTSIDE


* FEATHERY STIGMA


* NO OR LITTLE COLORS TO PETALS


* NO FRAGRANCE


* NO NECTAR

WHAT ARE THE FEATURES OF INSECT-

POLLINATED FLOWERS?

* BIG FLOWER


* ANTHERS AND STIGMA ARE IN THE FLOWER


* STICKY STIGMA


* PLEASANT FRAGRANCE


* BRIGHTLY COLORED


* SWEET NECTAR

DESCRIBE STAMEN AND PISTIL.

STAMEN IS A MALE REPRODUCTIVE ORGAN.


IT CONSISTS OF ANTHER AND FILAMENT.


PISTIL IS A FEMALE REPRODUCTIVE ORGAN.


IT CONSISTS OF STIGMA, STYLE AND OVARY.

DESCRIBE SEPAL AND PETAL.

SEPALS ARE SMALL LEAVES LOCATED


DIRECTLY UNDER A FLOWER. THEY PROTECT


THE FLOWER IN BUD CONDITION. SOMETIMES


THEY ARE GREEN IN COLOR FOR


PHOTOSYNTHESIS. PETAL IS ONE OF THE


LEAFY STRUCTURES THAT MAKE THE FLOWER.


THEY ATTRACT INSECTS FOR POLLINATION


AND ARE BRIGHTLY COLORED.

WHAT IS SEED DISPERSAL? WHY IS IT NEEDED?

SEED DISPERSAL INVOLVES THE SCATTERING


OF SEEDS WHEN THEY ARE CARRIED AWAY


FROM THE PARENTAL PLANT. THIS IS NEEDED


SO THAT THE NEW PLANTS WILL NOT BE


OVERCROWDED WHEN THEY GROW OR


GERMINATE.

WHAT ARE THE DIFFERENT WAYS OF


SEED DISPERSAL?

THERE ARE 4 DIFFERENT WAYS TO DISPERSE


A FRUIT WITH ITS SEEDS:




1. BY WIND


2. BY EXPLOSION


3. BY ANIMALS


4. BY WATER