are a diverse group of eukaryotic organisms that are similar in rRNA sequences, but quite different from each other in motility types and ecology. They have been used previously as a "catch-all" for organisms that couldn't be easily classified into other groups. A) Protists
B) Methanogens
C) Plants
D) Fungi

The correct answer is A) Protist

Explanation:

Eukaryotes which can not be classified into fungus, animal, and Plantae are known as protists. Most of the protists are unicellular. Some scientists call Protista as a catch-all kingdom because the members of the species Protista do not belong anywhere else.

Some protists can belong more to plants and some belong more to animals than each other. These protists are similar in the rRNA sequence but they are different in their ecology and motility type from each other. Therefore the correct answer is protist.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .