6. a, 7. c, 8. b , 9. e , 10. d , 11. e, 12.c
Tentacles of an octopus as well limbs of a lizard are analogous structures.
Analogous structures or organs perform the same function in different organisms that bear no resemblance to each other anatomically. Analogous structures are formed as a result of convergent evolution, i.e. different structures evolving for the similar function and thus having similarity. Tentacles of an octopus as well as limbs of a lizard are used for the similar function, i.e. locomotion in this case.
On the other hand, homologous structures result from divergent evolution. Homologous organs contain a similar basic structure but perform distinct functions in different organisms.
To learn more about Homologous organs here
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If it’s a yes or no question then yes because they spread through organisms. there are many organisms in the water that bacteria can spread through
I believe the answer id Cnidaria
All cells have a plasma membrane, ribosomes,cytoplasm, and DNA
