Page 30 - Biology - XII

3. The male fl owers are in large number forming a spikelet.
4. These are female fl owers on the maize plant.

5. They are present/borne in spadix at the bottom of a plant.
6. The styles hang outside the spadix and appear like a tuft of fi ne, long, silky, golden-white threads.
7. Stigma is protruding.

B. Wheat Flowers (Triticum aestivum)

Fig. 6.5 (a): Spike of wheat Fig. 6.5 (b): Spike of wheat Fig. 6.5 (c): Spike of spikelets, of Triticum
(Pictorial) (Diagrammatic) (wheat) (Diagrammatic)

Comments

1. It is the spike of wheat.
2. The fl owers are sessile, bracteate, and arranged in spike in two rows.
3. The fl owers are irregular and not showy.

4. Stamens are three and anthers are versatile.
5. Stigma is feathery.
C. Rice fl owers (Oryza sativa)
Panicle
infl orescence

Leaf

Stem

Fig. 6.6 (a): Flowering twig of Fig. 6.6 (b): Flowering twig of Fig. 6.6 (c): Panicle of fl owers,
paddy (Pictorial) paddy (Diagramatic) one spikelet, a fl ower
of Oryza (Rice)
Comments

1. This is the terminal panicle of rice plant.
2. The fl ower is bracteate, irregular, and sessile.
3. Stamens are six and anthers are free and versatile.
4. Gynoecium has long styles, feathery stigma.

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