Page 29 - Biology - XII

Flowers adapted to pollination by birds are called ornithophilous fl owers.

Identifi cation

Adaptations in ornithophilous fl owers to attract birds are—
1. Size—Flowers are large in size.
2. Nectar—The fl ower secretes nectar.
Other ornithophilous fl owers are—
Silk cotton (Salmalia; Bombax) fl ower, Erythrina

Silk cotton - fl ower Erythrina - fl owers
Fig. 6.3: Ornithophilous fl owers

Materials Required
Practical record fi le

Procedure
1. Take the materials and keep it on the table.
2. Observe the specimens.
3. Compare the comments mentioned.

4. Draw the diagram in your record fi le and write comments for each spot.

SPOT - 1
Flowers Adapted to Pollination by Wind (Anemophilous Flowers)

A. Maize Flowers (Zea mays)

Male fl owers

Peduncle
Leaf

Female fl owers
(styles)
Fruit

Fig. 6.4 (a): Maize - fl owers (Pictorial) Fig. 6.4 (b): Maize has anemophilous fl owers

Comments
1. It is a panicle of the male fl owers of maize plant.
2. The fl owers are small and arranged in a panicle on the top of a plant.

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