A single activated rhodopsin protein activates 

~13 transducin molecules in the few seconds before the covalent bond between the opsin protein and all-trans-retinal is spontaneously cleaved

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#Id: 10737

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Sessile flower (main axis elongated)

Spike

Examples: chaff flower (Achyranthes), bottle brush (Callistemon), Adhatoda vasica, Amaranthus

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#Id: 10738

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Spikelet

Examples: wheat, barley, sorghum, oats etc.  Poaceae family

Spikelet

The central axis of the inflorescence is called a rachis

Spikelets have two scaly bracts present at the base called glumes

Number of florets per spikelet vary in different species

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#Id: 10739

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Catkin

Examples:

Morus alba (mulberry), Betula (birches), Qercus (oaks), Salix (willows), etc.

TLS Online TPP Program

#Id: 10740

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Spadix

The spadix is enclosed by leaf-like large, bright, colourful and curved bracts known as a “spathe”. 

Spadix

Examples: Present in the plants of family 

Araceae (arums), Musaceae, Palmaceae

TLS Online TPP Program

#Id: 10741

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(main axis short)

Corymb

Examples: Candytuft, Lantana and Cherry

Compound corymb

Examples: Cauliflower

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#Id: 10742

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Simple Umbel

Examples: Centella asiatica (Brahmi), Allium cepa (onion), Fatsia japonica (paper plant), Primula veris (cowslip), etc.