A descriptive observation may very well be a mixture of both quantitative and qualitative as it can utilize elements of both types. Qualitative deals with the kinds of observations that cannot be measured in numerical form. Quantitative data is just that.
Son muy peligrosas porque pueden tener veneno.
I am pretty sure that the tissues which receive stimuli and conduct impulses or electrical signals in the body are being shown in the option : Nerve tissues. I choose this one because, according to the definition of nerve tissue, this is <span>the main tissue component which perform all the listed processes.
Hope that helps!</span>
That should make it more clear . Its the same thing . Both seta and cheta or chaete means bristles. I think the term can be used interchangeably.