Biology, asked by pradeep9735, 1 year ago

Difference between between spores and spikes on a plant

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Answered by waqaransari
7
genus Selaginella), any member of the plant genus Selaginella, of the order Selaginellales, with more than 700 species of mossy, in some cases fernlike, perennials. They are widely distributed in all parts of the world, particularly in the tropics. Many are forest plants; some grow on trees, but others thrive in dry or seasonally dry areas. They bear scalelike leaves, either spirally arranged or in ranks of four, on trailing, climbing, or erect stems and branches. The spore-bearing leaves are similar to ordinary leaves but are clustered in spikes, or strobili.




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Answered by Darvince
1
Spike moss, (genus Selaginella), any member of the plant genus Selaginella, of the order Selaginellales, with more than 700 species of mossy, in some cases fernlike, perennials. They are widely distributed in all parts of the world, particularly in the tropics. Many are forest plants; some grow on trees, but others thrive in dry or seasonally dry areas.

They bear scalelike leaves, either spirally arranged or in ranks of four, on trailing, climbing, or erect stems and branches.

The spore-bearing leaves are similar to ordinary leaves but are clustered in spikes, or strobili.

In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, fungi and protozoa.

 Bacterial spores are not part of a sexual cycle but are resistant structures used for survival under unfavourable conditions. 

Myxozoan spores release amoebulae into their hosts for parasitic infection, but also reproduce within the hosts through the pairing of two nuclei within the plasmodium, which develops from the amoebula.
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