Answer:
Cycads /ˈsaɪkædz/ 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, therefore the 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[3] and live very long, with some specimens known to be as much as 1,000 years old.[citation needed] 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).[4] 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.[5][6]
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.[7] 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.
Explanation:
~Dr.Smiley~
(Jane)
<span>Ecosystems are named according to the vegetative inhabitants of the ecosystem which means that the answer is B. by the plants that inhabit the ecosystem. The plants themselves however depend on the climate that is found in the place where they are found, which means that they wouldn't be able to thrive and spread in any other ecosystems.</span>
Hi everyone I was thinking would love
Answer:
Relative to prokaryotic cells, eukaryotic cells are usually larger and more complex.
Answer:
There are 3 methods to set up a wildflower classification means discovering a new flower. Those methods are discussed below in the explanation section.
Explanation:
Method one (Identification tools using):
- Search the about of the flower in the flower dictionary or flower database.
- Use any app which can identify flower such as Flowerchecker, Naturegate, etc.
- Take photos of the plant and post it on Flicker to get more information.
- Try google photos for searching about the plant by its picture.
Method two( Measuring the physical character of the plant):
- Measure the overall height of the plant.
- Measuring the width of the plant.
- Look at the flower to check how the flower is arranged on the stem.
- Count the petal number of the flower.
- Identify the color of the petals.
- Check the shape and texture of the stem.
- Check the shape, size, and arrangement of the leaves in the plant.
- Use this collected information to identify the flower in a plant database or encyclopedia.
Method three (Identifying the Flower’s Location and Blooming Time):
- Use the climate and terrain to determine the type of the flower.
- Observation of the factors in the geographic location to identify the flower.
- Find out the time of year when the flower bloomed.
- Identify the flower in an online database or encyclopedia using the collected information.
By doing this, you can set up a wildflower classification key and can find out the kingdom, family etc of the flower.
