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Arthropods
test
| Term | Definition |
|---|---|
| What does the name arthropod mean? | jointed appendages |
| Why do they have this name? | artho = join poda = foot |
| What parts make up their general body plan? | Head Thorax Abdomen |
| What are the advantages s of having an exoskeleton? | Protection Repels and retains water |
| What are the disadvantages of having an exoskeleton? | limits movement limits size |
| What is molting and why is it important for arthropods? | Molting = shedding exoskelton Important because it lets them grow |
| What is the difference between a simple and a compound eye? | Simple eyes - single lens Compound eyes - multiple lenses |
| What are receptors? Where are they located on arthropods? What functions do they have? | cells that sense the environment everywhere in the body touch, air movement , chemical, light, vibrations |
| Explain the function of swimmerets. | small appendages used to create current for gametes, oxygen, communication |
| Why is the carapace important for a crustacean? | protection |
| Where is the heart located in a crustacean like a crayfish? Explain how the sinus functions in an open circulatory system. | sinus empty cavity where blood pools |
| Why is the digestive gland needed in a crustacean? | secretes enzymes to digest food |
| Describe the difference between the cephalothorax of a crustacean and an arachnid. | Crustacean - cephalothorax is larger than abdomen Arachnid - Abdomen is larger than the cephalothorax |
| Why is the green gland important? | filters out nitrogen wastes |
| What is a hormone? Explain their relationship to target cells. | chemicals that cause change in an organism Target cells are the cells that are affected by a specific hormone |
| What is special about the venom of a spider? | Paralyzes prey Enzymes digest their tissues inside their body |
| Name the two kinds of spiders and how they differ. | Hunting spiders - use good eyesight and surprise attack Web spiders - trap prey with a web |
| What group of arthropods do mites and ticks fit into? Why are they something to be concerned about? | Arachnids parasites that suck fluids from the tissues of their host and transmit diseases |
| What do Malpighian tubules do? | small tubes that filter out nitrogen wastes (ammonia) and recycle water |
| What’s special about book lungs? How are they related to tracheal tubes and spiracles? | The have a lot of surface area. They are all used for respiration. |
| millipedes | millipedes: (milli – 1000, poda = feet) - pairs of legs per segment Short legs - slow round body Feed on dead plant material |
| centipedes | centipedes: (centi = 100, poda = feet) 1 pair of legs per segment Long legs - fast flat body Aggressive predators |
| List the four groups of arthropods. What is the primary difference in habitat between the crustaceans and the other groups? | Crustaceans, Arachnids, Myriapods, Insects Crustaceans are aquatic while all the other groups are terrestrial |
| What is ectothermy and how does it affect arthropods? | -get their heat/warmth from their environment Different habitats have different change in temperature like aquatic is less change in temperature while terrestrial had a various amount of temperature change. |
| Describe how to tell the difference between crustaceans, arachnids, myriapods, and insects using only the legs. | Crustaceans have 10 legs Arachnids have 8 legs Myriapods have 100 or 1000 legs Insects have 6 legs |
| Explain how horseshoe crabs could potentially provide support for macroevolution. | They have characteristics of both arachnids and crustaceans. |
Created by:
KiahnaL
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