Definitions for cycadales
cy·cadales

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Cycadales, order Cycadalesnoun

   primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms

WikipediaRate this definition:0.0 / 0 votes

1. cycadales

   Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly and live very long. Because of their superficial resemblance, they are sometimes mistaken for palms or ferns, but they are not closely related to either group. Cycads are gymnosperms (naked-seeded), meaning their unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobili), somewhat similar to conifer cones. Cycads have been reported to fix nitrogen in association with various cyanobacteria living in the roots (the "coralloid" roots). These photosynthetic bacteria produce a neurotoxin called BMAA that is found in the seeds of cycads. This neurotoxin may enter a human food chain as the cycad seeds may be eaten directly as a source of flour by humans or by wild or feral animals such as bats, and humans may eat these animals. It is hypothesized that this is a source of some neurological diseases in humans. Another defence mechanism against herbivores is the accumulation of toxins in seeds and vegetative tissues; through horizontal gene transfer, cycads have acquired a family of genes from a microbial organism, most likely a fungus, which gives them the ability to produce an insecticidal toxin.Cycads all over the world are in decline, with four species on the brink of extinction and seven species having fewer than 100 plants left in the wild. The plant has a very long fossil history, with evidence that they existed in greater abundance and in greater diversity before the Jurassic and late Triassic mass extinction events.

ChatGPTRate this definition:0.0 / 0 votes

1. cycadales

   Cycadales, also known as cycads, is an order of seed plants characterized by a stout and woody trunk with a crown of large, hard and stiff, evergreen leaves. They are usually quite slow growing, often being described as ‘living fossils’. They are gymnosperms, meaning their seeds are not enclosed in an ovary but are exposed on the surfaces of cone scales. Cycadales are found in tropical and subtropical regions around the world.

Matched Categories

1. • Plant Order

How to pronounce cycadales?

1. Alex

   US English

   David

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   Mark

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   Daniel

   British

   Libby

   British

   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

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   Veena

   Indian

   Priya

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   Neerja

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   Zira

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   Oliver

   British

   Wendy

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   Fred

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   Tessa

   South African

How to say cycadales in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of cycadales in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of cycadales in Pythagorean Numerology is: 1

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=cycadales
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Cycadales
3. ^ ChatGPT
   https://chat.openai.com