Worms Topics in Biodiversity
... through very tiny holes and crevices. There are approximately 1400 described species. Though they appear simple and defenseless, they are very effective predators (some also scavenge dead animal remains). They are armed with an eversible proboscis that, at rest, lies in a long, fluid-filled, interna ...
... through very tiny holes and crevices. There are approximately 1400 described species. Though they appear simple and defenseless, they are very effective predators (some also scavenge dead animal remains). They are armed with an eversible proboscis that, at rest, lies in a long, fluid-filled, interna ...
Reproductive Organs
... Alveolus (pl. Alveoli) One of many flattened vesicles that form a more or less continuous layer beneath the cell membrane of ciliates and a few other protozoans. Ambulacrum (pl. Ambulacra) Groove, ridge, or double band of tube feet, radial canal, and associated body wall of echinoderms. Ametabolous ...
... Alveolus (pl. Alveoli) One of many flattened vesicles that form a more or less continuous layer beneath the cell membrane of ciliates and a few other protozoans. Ambulacrum (pl. Ambulacra) Groove, ridge, or double band of tube feet, radial canal, and associated body wall of echinoderms. Ametabolous ...
Phylum Annelida
... On each side of the animal is a parapod (parapodia) consisting of fleshly lobes, which are supported by chitinous rods Each parapod have setae, which can be sharp (protection), and aid in locomotion ...
... On each side of the animal is a parapod (parapodia) consisting of fleshly lobes, which are supported by chitinous rods Each parapod have setae, which can be sharp (protection), and aid in locomotion ...
What Is a Fish? - Cloudfront.net
... • At first glance, fishes, amphibians, reptiles, birds, and mammals appear to be very different from one another • Some have feathers; others have fins • Some fly; others swim or crawl • These variations are some of the characteristics that biologists use to separate these animals into different cla ...
... • At first glance, fishes, amphibians, reptiles, birds, and mammals appear to be very different from one another • Some have feathers; others have fins • Some fly; others swim or crawl • These variations are some of the characteristics that biologists use to separate these animals into different cla ...
1 The diagram shows part of a pre-mRNA molecule. 1 (a) (i) Name
... approximately 2.5 mm long. Males are smaller and possess a distinct black patch on their bodies. Females lay up to 400 eggs which develop into adults in 7 to 14 days. Fruit flies will survive and breed in small flasks containing a simple nutrient medium consisting mainly of sugars. ...
... approximately 2.5 mm long. Males are smaller and possess a distinct black patch on their bodies. Females lay up to 400 eggs which develop into adults in 7 to 14 days. Fruit flies will survive and breed in small flasks containing a simple nutrient medium consisting mainly of sugars. ...
Chapter 27: Mollusks and Segmented Worms
... Most bivalves are marine, but a few species live in freshwater habitats. Bivalves occur in a range of sizes. Some are less than 1 mm in length and others, such as the tropical giant clam, may be 1.5 m long. Bivalves have no distinct head or radula. Most use their large, muscular foot for burrowing i ...
... Most bivalves are marine, but a few species live in freshwater habitats. Bivalves occur in a range of sizes. Some are less than 1 mm in length and others, such as the tropical giant clam, may be 1.5 m long. Bivalves have no distinct head or radula. Most use their large, muscular foot for burrowing i ...
Invertebrates - Hardin County Schools
... in order to eat. Because sponges are sessile, meaning they cannot move, they filter water to obtain their food. They are, therefore, known as filter feeders. Filter feeders must filter the water to separate out the organisms and nutrients they want to eat from those they do not. You might think that ...
... in order to eat. Because sponges are sessile, meaning they cannot move, they filter water to obtain their food. They are, therefore, known as filter feeders. Filter feeders must filter the water to separate out the organisms and nutrients they want to eat from those they do not. You might think that ...
Marine Arthropods LCS ppt
... When male and female crabs reproduce, they assume the doubler position, which is when the male carries the female. Mating lasts about five-and-a-half hours, but the crabs may stay in this position for up to three days afterward. The female stores the male's sperm on the underside of her abdomen, w ...
... When male and female crabs reproduce, they assume the doubler position, which is when the male carries the female. Mating lasts about five-and-a-half hours, but the crabs may stay in this position for up to three days afterward. The female stores the male's sperm on the underside of her abdomen, w ...
Observation of Earthworms Name__________________ Block
... the end away from the leading end. 2. To differentiate between the worm’s dorsal (back) and ventral (stomach) sides, roll the worm over. Describe the worm’s response to being put ventral side up. 3. Notice how the body of the earthworm is divided into segments. Starting at about segment number 32 th ...
... the end away from the leading end. 2. To differentiate between the worm’s dorsal (back) and ventral (stomach) sides, roll the worm over. Describe the worm’s response to being put ventral side up. 3. Notice how the body of the earthworm is divided into segments. Starting at about segment number 32 th ...
ARTHROPOD LABORATORY Phylum Arthropoda Subphylum
... Be sure you can key Limulus to class using the key at the beginning of the handout. Limulus lives on soft bottoms and is a carnivore/scavenger. Food is moved into the mouth region with the chelicera and walking legs and then ground by the gnathobases before entering the mouth. Like other arthropods, ...
... Be sure you can key Limulus to class using the key at the beginning of the handout. Limulus lives on soft bottoms and is a carnivore/scavenger. Food is moved into the mouth region with the chelicera and walking legs and then ground by the gnathobases before entering the mouth. Like other arthropods, ...
Development of the Fruit Fly
... A simple collecting chamber consists of an empty culture bottle (any widemouthed bottle will do) with wet toweling stuffed in the bottom (for humidity) and a cotton or foam rubber plug. Place approximately 40 pairs of flies in the chamber by inverting a culture bottle containing flies over the mouth ...
... A simple collecting chamber consists of an empty culture bottle (any widemouthed bottle will do) with wet toweling stuffed in the bottom (for humidity) and a cotton or foam rubber plug. Place approximately 40 pairs of flies in the chamber by inverting a culture bottle containing flies over the mouth ...
GENERAL ZOOLOGY
... floating forms with perfect spherical symmetry; and forms with bilateral symmetry similar to that of flatworms. ...
... floating forms with perfect spherical symmetry; and forms with bilateral symmetry similar to that of flatworms. ...
Crayfish Lab - c214science
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
HO#3 - Teachers TryScience
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
ENDOCRINE SYSTEM The endocrine glands release hormones
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
... underneath the heart. In females you will see the ovaries with eggs inside and in males you will see the tiny tubules for carrying sperm (VAS DEFERENS). In males the 1st two pairs of SWIMMMERETS are modified to transfer sperm to the female. Females store sperm in a SEMINAL RECEPTACLE (opening betwee ...
Chapter 26: Arthropods
... arthropods have gills, like those shown in Figure 26.6, that function in the same way as the gills in mollusks. All terrestrial arthropod body tissues need to be near airways to obtain oxygen. Terrestrial arthropods depend on respiratory systems rather than circulatory systems to carry oxygen to cel ...
... arthropods have gills, like those shown in Figure 26.6, that function in the same way as the gills in mollusks. All terrestrial arthropod body tissues need to be near airways to obtain oxygen. Terrestrial arthropods depend on respiratory systems rather than circulatory systems to carry oxygen to cel ...
MAMMAL FACT SHEET What are Mammals?
... some whales still have a few nonfunctional hairs on their heads or around their mouth. While body hair first evolved as form of insulation, it has other functions or special uses as well. A porcupine’s defensive quills are actually just large, stiffened hairs. Whiskers are attached to important sens ...
... some whales still have a few nonfunctional hairs on their heads or around their mouth. While body hair first evolved as form of insulation, it has other functions or special uses as well. A porcupine’s defensive quills are actually just large, stiffened hairs. Whiskers are attached to important sens ...
27–2 Roundworms
... and then release larvae. These larvae travel through the bloodstream and burrow into organs and tissues, causing terrible pain for the host. The larvae form cysts and become inactive in the host’s muscle tissue. Trichinella completes its life cycle only when another animal eats muscle tissue contain ...
... and then release larvae. These larvae travel through the bloodstream and burrow into organs and tissues, causing terrible pain for the host. The larvae form cysts and become inactive in the host’s muscle tissue. Trichinella completes its life cycle only when another animal eats muscle tissue contain ...
From Sponges to Invertebrate Chordates
... cells exchange gases by diffusion directly with the environment. Their digestive system is incomplete. Flatworms reflect several major evolutionary advances in invertebrates. They have three embryonic cell layers, including mesoderm. The mesoderm layer allows them to develop organ systems. For examp ...
... cells exchange gases by diffusion directly with the environment. Their digestive system is incomplete. Flatworms reflect several major evolutionary advances in invertebrates. They have three embryonic cell layers, including mesoderm. The mesoderm layer allows them to develop organ systems. For examp ...
mollusks and annelids mollusks and annelids
... Despite their very different appearances, invertebrates such as clams, snails, slugs, and octopuses belong to the same phylum, Mollusca (muh-LUHS-kuh). Members of this phylum are called mollusks, a name that comes from the Latin molluscus, which means “soft.” Although some mollusks have soft bodies, ...
... Despite their very different appearances, invertebrates such as clams, snails, slugs, and octopuses belong to the same phylum, Mollusca (muh-LUHS-kuh). Members of this phylum are called mollusks, a name that comes from the Latin molluscus, which means “soft.” Although some mollusks have soft bodies, ...
Salamander info
... and external gills are three important features of larval survival and development that disappear during the metamorphoses to adults. Anuran larvae develop rapidly over a period of days to a few weeks and undergo metamorphosis quickly into a tailless insectivorous adult. In the spring, frogs and toa ...
... and external gills are three important features of larval survival and development that disappear during the metamorphoses to adults. Anuran larvae develop rapidly over a period of days to a few weeks and undergo metamorphosis quickly into a tailless insectivorous adult. In the spring, frogs and toa ...
Universe of Aquatic Inverts - KsuWeb
... Subclass Copepoda - Small bodied, translucent. More or less cyclindrical, segmented body form divided into a wide anterior metasome and a narrower posterior urosome (egg sacs may be present at articulation of these two body parts). First antennae large (used for swimming). Fifth thoracic legs used ...
... Subclass Copepoda - Small bodied, translucent. More or less cyclindrical, segmented body form divided into a wide anterior metasome and a narrower posterior urosome (egg sacs may be present at articulation of these two body parts). First antennae large (used for swimming). Fifth thoracic legs used ...
Horse-fly
Horse-flies (for other names, see common names) are true flies in the family Tabanidae in the insect order Diptera. They are often large and agile in flight, and the females bite animals, including humans, in order to obtain blood. They prefer to fly in sunlight, avoiding dark and shady areas, and are inactive at night. They are found all over the world except for some islands and the polar regions.Adult horse-flies feed on nectar and plant exudates; the males have weak mouthparts and only the females bite animals to obtain enough protein from blood to produce eggs. The mouthparts of females are formed into a stout stabbing organ with two pairs of sharp cutting blades, and a spongelike part used to lap up the blood that flows from the wound. The larvae are predaceous and grow in semiaquatic habitats.Female horse-flies can transfer blood-borne diseases from one animal to another through their feeding habit. In areas where diseases occur, they have been known to carry equine infectious anaemia virus, some trypanosomes, the filarial worm Loa loa, anthrax among cattle and sheep, and tularemia. As well as making life outdoors uncomfortable for humans, they can reduce growth rates in cattle and lower the milk output of cows if suitable shelters are not provided.Horse-flies have appeared in literature since Aeschylus in Ancient Greece mentioned them driving people to madness through their persistent pursuit. Shakespeare uses the theme of the maddening gadfly in his plays King Lear and Antony and Cleopatra.