Select all that apply.
which animals are invertebrates?
starfish
earthworms
tunicates
amphibians
lancelets
octopus
crab
grasshopper

The correct answer is- starfish, earthworms, tunicates, lancelets, octopus, crab, grasshopper.

Invertebrates are those living organisms that don’t possess a vertebral column. The backbone is another name for the vertebral column. More than 90% of the species that are present on earth are invertebrates. There are primarily 8 phyla that come under invertebrates.

Out of the given options, the invertebrates are-

starfish ( come under phylum echinodermata), earthworms ( phylum annelida), tunicates and lancelets ( marine invertebrates that are related to chordates), octopus ( phylum mollusca), crab and grasshopper ( phylum arthropoda),

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: