answer choices . About MrCrayfish. This helps a crayfish stay balanced or swim backwards really fast when it is scared. Q. The jointed structure in the front of the crayfish that can pinch. They can grow very large—up to 24 inches in a tank—but most are between one and six inches long. Equipped with thousands of sensory bristles, some sensitive to chemicals and the others to touch, crayfish can smell, feel, and hear acutely, even though they are completely covered in a hard shell. Underestimating crayfish would be a big mistake! shelter. The Shasta crayfish is the only extant species of crayfish native solely to California. Our ears pick up vibrations via the eardrum and tiny bones in our ears, but crayfish have thousands of sensory bristles. bristles. 30 seconds . Equipped with thousands of sensory bristles, some sensitive to chemicals and the others to touch, crayfish can smell, feel, and hear acutely, even though they are completely covered in a hard shell. 3. Crayfish - Ventral View 1. Tags: Question 17 . What appendage is used to pass sperm from the male to … Bristleworms (or bristle worms) are segmented worms with bristly tufts extending from each of their segments. How many species of them are there? all of the above. A crayfish has two of these to help it see. The external jaws or have calcified teeth. bristles. Equipped with thousands of sensory bristles, some sensitive to chemicals and the others to touch, crayfish can smell, feel, and hear acutely, even though they are completely covered in a hard shell. answer choices . What is the function of the sensory bristles? Crayfish do not have ears, but they can hear. Food. eye. antennae. These itty bitty structures cover the crayfish body and help it to sense it's surroundings. Question Do crayfish have to eat elodea? MrCrayfish is an Australian who likes to have fun producing content, either through programming or making videos. What are the two main functions of the maxilla? They are aquatic, but can survive fairly extended sojourns on dry land as long as their gills remain moist. 2. Crayfish are aquatic creatures and have several bristles on their surface which are sensitive to chemicals and touch. tail flap. Crayfish use this leg-like structure to swim, move water over their gills or hold larva. The things that animals need in order to survive. water. swimmerets. The crayfish has pairs of maxillipeds 4. Competition with, and predation by, signal crayfish, an invasive nonnative species, is one factor contributing Crayfish are equipped with thousands of sensory bristles, some sensitive to chemicals and the others to touch, crayfish can smell, feel, and hear acutely, even though they are completely covered in a hard shell. He has currently achieved over 600,000 subscribers on YouTube and is growing constantly. SURVEY . pincers. They are aquatic, but can survive fairly extended sojourns on dry land as long as their gills remain moist. It is a relatively long-lived species, but has limited reproductive potential; it matures slowly (at age five years) and produces relatively few eggs. They can smell, feel, and hear though they are completely covered with a hard shell. They are nocturnal and tend to stay in or under a live rock or in the tank substrate. acrostichal bristles The two rows of hairs or bristles lying one on either side of the mid-line of the thorax of a true fly. In crayfish, the hourglass pattern on the dorsal surface of the cephalothorax arolium A pad-like median lobe between the tarsal claws. Hard shell it see thousands of sensory bristles the crayfish that can pinch he has currently achieved 600,000... Shasta crayfish is the only extant species of crayfish native solely to.! The jointed structure in the tank substrate jointed structure in the front of the arolium! But they can smell, feel, and hear though they are nocturnal and tend stay. 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