Reading Guide for Chapter 35 – The Vertebrates 1. What are the five features of the chordates? • A hollow dorsal nerve cord just beneath the dorsal surface of the animal. In vertebrates this differentiates into the brain and spinal cord. • A flexible rod called the notochord that’s on the dorsal side of the primitive gut in the early embryo‚ present at some developmental stage in all chordates‚ located just below the nerve cord. May persist in some chordates; in others‚ it is replaced by
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Week 10 – Vertebrates Today • This week we cover the spiny dogfish. • For this week‚ read pages 27‚ 35-38‚ 45-50 in laboratory manual. • It’s best to include the pages from the manual next to your answers to make it easier to go back and find the info later when studying. Objectives 1. What type of animal is the spiny dogfish? 2. What does the term “spiny” indicate about the spiny dogfish? 3. A. Are sharks members of the group Chordata? B. Why
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above the origin of the pectoral fins.[3][5][18] Size comparison between an adult goblin shark and a human diver The body is fairly slender and flabby. The two dorsal fins are similar in size and shape‚ both being small and rounded. The pectoral fins are also rather small and rounded. The pelvic and anal fins have long bases and are larger than the dorsal fins. The caudal peduncle is flattened from side-to-side and lacks keels or notches. The asymmetric caudal fin has a long upper lobe with a shallow
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Lord of the Ants Ed Wilson Was hit in the eye by the dorsal fin of a Pin fish and went partially blind‚ so he turned his interest to animals small enough for him to see entirely and up close‚ something small enough for him to hold between his thumb and pointer finger to inspect. Pheidole Jim Watson- Newly appointed head at Harvard Watson inspired Wilson to apply chemistry to how ants stay so organized Chemical trail ants leave to direct and guide other ants towards food‚ away
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Bottlenose dolphins are also known as Tursiops truncates‚ which is their scientific name. This name originated from the Latin word “tursio” which means “dolphin”‚ and the Greek suffix “ops” which means “appearance”. In effect‚ tursiops means “dolphin-like” and their scientific name was derived from these other languages. Bottlenose dolphins are generally 6.6 to 12.8 feet long and weighing around 332 to 442 pounds. The variations in size are because of geographical location and gender. The coastal
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torpedo shaped figure‚ making them the perect candidate for fast swimming (“Dolphins” The New Book of Popular Science). They also have a number of fins useful for their lifestyle including a fluke‚ dorsal fin‚ and pectoral fins. While the fluke is used primarily for propoltion and speed‚ the dolphin uses its dorsal fin for stability‚ and its pectoral fins for direction control. With their acute eyesight‚ dolphins rely primarily on their sense of sound. Despite the small slits on the sides of their
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I do not think whales should be in captivity because whales are way too big to be in takes at seaworld the whales can’t even move around in the tank‚ imagine you are living in the entire ocean and then you just get pulled out and get put in a tank where you can’t even move. I think that they just want a bigger crowd because it means they would get more money. Whales should not be in captivity because the tanks are way to small‚ Trainers don’t not feed the whale enough‚ and people don’t have the best
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aggressive towards each other and their trainers. There have been over 100 recorded aggressive acts of Killer Whales towards humans and 4 deaths. The health risks that a Killer Whale in captivity faces are many‚ more than you could count. A collapsed Dorsal Fin is very common in captivity‚ this is caused by lack of exercise and movement. Killer Whale Depression is also very common‚ this is when a Killer Whale repeats the same thing over and over. Usually In captivity Killer Whales die at the age of 25
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the islands where the shark was found. The Galapagos shark is a large‚ thin shark. The shark is brownish or grey black and has black sides and a white underside. PICTURE The first dorsal fin shark was tall‚ narrow and almost straight‚ and a low ridge leads to the small‚ second dorsal fin. The trailing edges of the fins may be darker than the rest of the body‚ and the tips may be a dusty colour. The shark is slightly different to most sharks because it has a rounded snout. The Galapagos shark is a
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features and appear less visually different. The resident pod and the transient pods have distinct differences between the male and female whales; not only is the male a larger mammal the male also has a top dorsal fin that can reach up to 5 to 6 feet out of the water while the female fin is not as profound. These different Orca species do share some common features as well; the orca is a highly sociable and curious mammal. They communicate with one another using clicks‚ whistles‚ and pulsed
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