How and why are seeds dispersed?

Biology

2 answers:

Maru [420]2 years ago

8 0

Answer:

Plants disperse their seeds in lots of different ways. Some seeds are transported by the wind and are shaped to float, glide or spin through the air take weeds for example they disperse their seeds in the wind to create more around the yard

snow_lady [41]2 years ago

7 0

Seeds may be dispersed through animals themselves through feces or wind may carry them. repopulation is the main reason they are dispersed

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A mutation that causes production of a defective pilus in a bacterium will prevent __________.

daser333 [38]

Answer:

The correct answer is: Attachment.

Explanation:

Pilus are thread like structures which are present on the surface of the bacterial cell.
They are mainly responsible for attaching the bacterial cells to a substrate, for obtaining food or to an eukaryotic cell for the purpose of infection.
Pilus also mediate the process of conjugation in some bacterial cells.
Conjugation is a process by which genetic material or plasmids are transferred from one bacteria to another through a channel formed in between the two bacteria by the help of the pilus.
Pilus also helps the bacteria by preventing them from getting recognised by the immune cells in the host.
A defective pilus will affect all the above processes, resulting in death of the bacteria.