and ctenophora. ... Examples of animals that possess bilateral symmetry are: flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.
Only now can we start to unravel the influ-ence of se a ice on the weather that is experienced in southern Australia. But in another way the extent of se a ice extends its influence far beyond Antarctica. Antarctic krill-the small shrimp-like crustaceans that are the staple diet for ...
In crustaceans, production of molting hormones (or ecdysteroids) by the molting glands (Y-organs; YO), is under negative control exerted by a neuropeptide, the molt-inhibiting hormone (MIH). MIH of the crab Carcinus maenas inhibits in vitro steroidogenesis of basal (intermolt crab) or ...
There is also evidence to suggest that grazers (animals that feed on plants or stationary animals), particularly selective grazers, can influence the phytoplankton species composition.Many copepods (small, herbivorous crustaceans) and invertebrate larvae pick out selected phytoplankton species from mixed gr...
Which of the following animals has three middle ear bones? a. catfish b. alligators c. crocodiles d. lizards e. dogs Middle Ear Bones in Mammals Middle ear bones are an example of an exaptation. The bones that form the middle ear in ma...
Step-by-Step Solution:1. Understanding Exoskeletons: - Invertebrates, particularly those in the phylum Arthropoda, possess an exoskeleton made of chitin. This structure provides support and protection.<
Which of the following organisms excretes urea? a) Bony fish b) Mammals c) Insects d) Reptiles e) Birds Nitrogenous waste Nitrogen is an essential element for life. However, accumulation of nitrogen in organisms can lead to excess formation of ammonia,...
"The calculated pinching force of the largest coconut crab is almost equal to the bite force of the adult lions." So, these overgrown, coconut-smashing, kitten-eating crustaceans are basically hermit crabs on steroids, but they actually do spend some of their life cycle in the same manner ...
“The scientific evidence clearly indicates, either directly or by analogy with animals in the same taxonomic groups, that animals in those groups are able to experience pain and distress”. There is ample evidence thatdecapod crustaceans are sentientand likely to be capable of feeling pain and ex...
the Trenton limestone group, in Of what took place before the Laurentian strata were places a thousand feet thick, the deposits of quiet waters, deposited we can gain no knowledge from the rocks, and composed almost entirely of the hard parts of animals because these are the oldest known. We...