Worms
How do worms move?
They are deaf and blind so they move based on vibrations in the ground
How do crayfish hide from their predators?
Crayfish blend in with their surroundings to hide from their predators using camouflage.
True or False: Frogs are amphibians
True!
What is the exterior part of crayfish that is similar to skin called?
exoskelotons
True or False: All these animals are Habitat Engineers
True
Define how earthworms play a part in food chains.
What is the significance of crayfish burrowing?
They use burrowing as a mechanism to withstand environmental extremes. Such as high temperatures.
What are adaptations that allow frogs to swim or hunt better
Webbed feet, bulging eyes, and/or strong legs
Are frog's intestines short or long due to being carnivores?
Crayfish work best at night. What does this make them?
Nocturnal as they work best shortly after dawn and just after dusk.
How does the availability of organic matter in the soil influence the feeding behavior of earthworms?
Earthworms feed on decaying organic matter such as dead leaves, plant debris, and microorganisms. When organic matter is abundant, earthworms may exhibit increased feeding activity, actively foraging for and consuming available food sources. They may also burrow closer to the soil surface, where organic matter accumulates, to access freshly fallen debris or decomposing plant material.
What is the function of the antennules of a crayfish?
Used for balance, orientation, and detecting chemical cues in their environment
Why are frogs most active at night?
Because they have thin and permeable skin which means they can lose their body moisture on warmer days
What are some of the systems these organisms have in common?
Reproductive system, respiratory system, circulatory system, nervous system, & digestive system
How do all three of these organisms deliver their offspring?
Eggs
How would the movement of earthworms change if they were not segmented?
Segmentation provides earthworms with flexibility and adaptability to navigate diverse soil conditions and environmental challenges. Without this anatomical feature, earthworms would likely experience limitations in movement and functionality, which could impact their survival and ecological role in soil ecosystems.
Crayfish have feathery gills that allow them extract dissolved oxygen from water. How does their specialized respiratory anatomy help crayfish play a unique ecological role?
The gills allow for them to thrive in aquatic habitats with low oxygen levels that many other organisms cannot tolerate.
What feature in a frog's skin allows them to blend in with their environment?
patterned skin on their dorsal side and then yellow ventral side to then be able to camouflage into the aquatic habitat.
How do earthworms being hermaphrodites affect ecology?
the ability to self-fertilize can be helpful in situations where mates are scarce. This ensures reproductive success even when individuals are isolated from potential mates, contributing to the stability of worm populations.
Are crayfish, frogs, and worms pray or predators?
Both
What is the ecological role of worms?
They burrow through the soil, creating channels that aerate it, improve water infiltration, and promote the decomposition of organic matter. Their castings (excrement) are rich in nutrients, enhancing soil fertility. Worms diffuse oxygen through their skin so traveling through the soil helps the quality and nutrients
CrayFish are known to have a negative impact on their ecological environment as they’re known to be large grazers. How does this impact their environment?
They leave a negative impact as they eat a large amount increasing the loss of submerged plants increasing the cloudiness of the water.
Through their skin, frogs absorb chemicals from the air and water. For this reason, they are good indicators of what?
environmental damage/ change in the environment
How do the setae of a earthworm work?
These bristles help work as a grip while burrowing. This helps them have a better precision while they dig.
What common similarities does all three organisms have when it comes to the behaviors of the organisms.
-Reproductions
-Burrowing
-Territorial behaviors