There are not any insects that have two hearts. There may be other types of organs that do the same thing that a heart would though.
Um... an octopus has three. An earthworm has five, and a cockroach arguably has thirteen.
An insect is a type of animal. Any structure on an insect is, by definition, a structure on an animal.
It is correct to say an animal and an insect.
yes, a stick insect has a heart that is 15 for every insect in the world.
No, its an insect - it has 6 legs and lays eggs.
Depends on the insect.
On every third birthday, an animal is considered to be an insect.
Any adult insect that has 9 abdominal segments will have a 12 chambered heart. The insect heart is a tube with one swelling (chamber) per body segment. So, there will be 3 thoracic chambers in most insects. An additional 9 abdominal segments would give 12 total chambers to the long heart tube.
An animal (insect) with an exoskeleton still grows under its exoskeleton like any other animal (insect). The exoskeleton is like a suit of armor, when the animal (insect) grows to big to fit inside its exoskeleton it sheds it, and a newer exoskeleton will grow to fit the animal (insect).
This question is far too general. Insect bites and animal bites are different.
An insect has 3 pairs of legs (6 legs) and an exoskeleton.
Insect, so technically an animal
ITS AN ANIMAL! It is not an insect, as it is commonly mistaken