flower and fruit for 8th

Post on 06-May-2015

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Transcript of flower and fruit for 8th

Gynoecium is the female reproductive part of the flower and is made up of one or more carpels.

Gynoecium

AndroeciumAndroecium is composed of stamens. Each stamen which represents the male reproductive organ consists of a stalk or a filament and an anther.

Pedicel

• The flower stem

Receptacle

• The place on the stem where floral organs attach and originate.

Sepals

• Usually green; leaflike structures that protect the flower, as it forms

and emerges.

• Sometimes sepals are colorful

Calyx

• The group of sepals on a flower

Petals

• Located just inside the sepals

• Leaf-like and often very colorful

• Attract pollinators

Corolla

• The collection of petals on a flower

Stamens

• Male reproductive parts of a flower• Arranged around the female parts

Anther

• Part of the stamen

• Produces and holds pollen

Filament

• Stalk that holds up the anther

Stigma

• Found at the end of the pistil

• Has a sticky surface to catch pollen

Ovary

• Part of the pistil that contains the ovules

Ovule

• The part of the flower in which the eggs are produced and seeds develop

Pollination

Cross pollination

Bee goes into flower

Bee Collects Pollen

Bee transports into another flower

Gives pollen to another flower

Cross-Pollination• Insects other than bees may also cross-pollinate such as:

Butterflies

Caterpillars

Mosquitos

Self-pollination

Self Pollination

• Bees and other animals bring pollen from the flower’s own anthers to its stigma.

The bees collect the pollen from the Anther and then gives it the Stigma

fruits

There are two types of fruits

1:fleshy fruits –wall of ovary becomes flashy and bulky in some fruits are called fleshy fruits e..g. mango lemon

2:dry fruits: the wall of ovary becomes dry in some fruits at their maturity e.g . Pea , green gram

Fleshy fruit

Dry fruits