Metamorphosis - Formatted
... receptors are present in low levels. With increase in the level of thyroid hormone, T3 receptors increase affecting the sensitivity as well as response of the target tissue or its competence. The metamorphic climax is the result of enhanced production and induction of T3 receptors that result in qui ...
... receptors are present in low levels. With increase in the level of thyroid hormone, T3 receptors increase affecting the sensitivity as well as response of the target tissue or its competence. The metamorphic climax is the result of enhanced production and induction of T3 receptors that result in qui ...
08/Marine Worms
... Typical whipping movements of the roundworm’s body propel it through the spaces between sand grains. Some roundworms can also swim through the water. In the roundworm’s head region are the ganglia, which connect to nerves that run through the body. These nerves control the muscles that enable the wo ...
... Typical whipping movements of the roundworm’s body propel it through the spaces between sand grains. Some roundworms can also swim through the water. In the roundworm’s head region are the ganglia, which connect to nerves that run through the body. These nerves control the muscles that enable the wo ...
Arthropods - walker2013
... Centipedes and millipedes have tracheal tubes for gas exchange Centipedes are carnivorous and eat soil arthropods, snails, slugs, and worms These arthropods can bite ...
... Centipedes and millipedes have tracheal tubes for gas exchange Centipedes are carnivorous and eat soil arthropods, snails, slugs, and worms These arthropods can bite ...
L2 and L1 Causes of arising pest problems. Description of Arthropod
... occupying a range of trophic levels.Protozoa are single-celled animals that feed primarily on bacteria, but also eat other protozoa, soluble organic matter, and sometimes fungi. They are several times larger than bacteria – ranging from 1/5000 to 1/50 of an inch (5 to 500 µm) in diameter. As they ea ...
... occupying a range of trophic levels.Protozoa are single-celled animals that feed primarily on bacteria, but also eat other protozoa, soluble organic matter, and sometimes fungi. They are several times larger than bacteria – ranging from 1/5000 to 1/50 of an inch (5 to 500 µm) in diameter. As they ea ...
Common Sea Life of Southeastern Alaska
... Rocky beaches are often slippery, especially when covered in seaweed or diatoms. Stepping carefully and choosing your route can make a difference. Watch for loose rocks, as these can tilt or shift when you step on them. Surge channels should be navigated carefully, as unexpected waves have a lot of ...
... Rocky beaches are often slippery, especially when covered in seaweed or diatoms. Stepping carefully and choosing your route can make a difference. Watch for loose rocks, as these can tilt or shift when you step on them. Surge channels should be navigated carefully, as unexpected waves have a lot of ...
Life Functions - duncanbiology
... – The majority of terrestrial arthropods respire through a network of fine tubes called trachea. – Air enters the arthropod’s body through abdominal pores called spiracles and passes into the tracheae, delivering oxygen throughout the body. – Valves that control the flow of air through the spiracles ...
... – The majority of terrestrial arthropods respire through a network of fine tubes called trachea. – Air enters the arthropod’s body through abdominal pores called spiracles and passes into the tracheae, delivering oxygen throughout the body. – Valves that control the flow of air through the spiracles ...
To a Louse, Typhus and More
... occurred when the army of Maximilian II of Germany was preparing 80,000 men to face the Sultan Soliman in Hungary. In a camp at Komorn in 1566, a disease broke out that was undoubtedly typhus. It was so violent and deadly that the campaign against the Turks was ended. Typhus has single-handedly play ...
... occurred when the army of Maximilian II of Germany was preparing 80,000 men to face the Sultan Soliman in Hungary. In a camp at Komorn in 1566, a disease broke out that was undoubtedly typhus. It was so violent and deadly that the campaign against the Turks was ended. Typhus has single-handedly play ...
Phylum Mollusca pwrpnt
... Most bivalves are marine. They have no distinct head or radula. Most use their large, muscular foot for burrowing in the mud or sand at the bottom of the ocean. • A ligament, like a hinge, connects their two shells (valves) and strong muscles allow the valves to open and close over the body. • One o ...
... Most bivalves are marine. They have no distinct head or radula. Most use their large, muscular foot for burrowing in the mud or sand at the bottom of the ocean. • A ligament, like a hinge, connects their two shells (valves) and strong muscles allow the valves to open and close over the body. • One o ...
Segmented Worms
... areas, for example, a square meter of mudflat may contain thousands of polychaetes. They play a significant part in marine food chains because they are eaten by fish, crustaceans, hydroids, and many other predators. Polychaetes are often divided into two groups based on their activity: sedentary pol ...
... areas, for example, a square meter of mudflat may contain thousands of polychaetes. They play a significant part in marine food chains because they are eaten by fish, crustaceans, hydroids, and many other predators. Polychaetes are often divided into two groups based on their activity: sedentary pol ...
Section -B (Short Answer Type) - Name
... Integuments shows some of the processes that may be external or internal. Internal processes are restricted to apodemes but external processes may be cellular or non-cellular. Unicellular outgrowths are like hairs, bristles, setae and scales. In all of these membraneous articulation is absent (FIG.1 ...
... Integuments shows some of the processes that may be external or internal. Internal processes are restricted to apodemes but external processes may be cellular or non-cellular. Unicellular outgrowths are like hairs, bristles, setae and scales. In all of these membraneous articulation is absent (FIG.1 ...
Lesson 2B - Metamorphosis
... Adult • The insects stop molting when they reach their adult size. • By this time, they have also grown wings. Insects with Incomplete Metamorphosis… ...
... Adult • The insects stop molting when they reach their adult size. • By this time, they have also grown wings. Insects with Incomplete Metamorphosis… ...
insects_friends_and_foes_revised_6-30-11doc
... Antennae- a flexible attachment on the head of an insect used to feel things. Bug- another name for an insect. Butterfly- an insect that can fly and has four wings covered with scales. Caterpillar- a young butterfly or moth that has just hatched out of its egg. Chirping- a short, sharp sound made by ...
... Antennae- a flexible attachment on the head of an insect used to feel things. Bug- another name for an insect. Butterfly- an insect that can fly and has four wings covered with scales. Caterpillar- a young butterfly or moth that has just hatched out of its egg. Chirping- a short, sharp sound made by ...
Section 32.1 Summary – pages 841 - 847
... • The platypus has webbed front feet for swimming through water, but it also has sharp claws on its front and hind feet for digging and burrowing into the soil. • Much of its body is covered with thick, brown fur. ...
... • The platypus has webbed front feet for swimming through water, but it also has sharp claws on its front and hind feet for digging and burrowing into the soil. • Much of its body is covered with thick, brown fur. ...
document
... in each body segment (septa: internal segments) Coelomates with hydrostatic skeleton Triploblatic: Endoderm, Mesoderm, and Ectoderm One way digestion: mouth and anus Anterior end or head (prostomium) typically equipped with mouth and jaws, eyes and other sense organs ...
... in each body segment (septa: internal segments) Coelomates with hydrostatic skeleton Triploblatic: Endoderm, Mesoderm, and Ectoderm One way digestion: mouth and anus Anterior end or head (prostomium) typically equipped with mouth and jaws, eyes and other sense organs ...
Common Seashore Animals of Southeast Alaska
... can make a difference. Watch for loose rocks, as these can tilt or shift when you step on them. Surge channels should be navigated carefully, as unexpected waves have a lot of force in these areas. It is pretty much inevitable that any exploration trip to the intertidal zone will lead to at least on ...
... can make a difference. Watch for loose rocks, as these can tilt or shift when you step on them. Surge channels should be navigated carefully, as unexpected waves have a lot of force in these areas. It is pretty much inevitable that any exploration trip to the intertidal zone will lead to at least on ...
Training manual on breeding and culture of scallop and sea
... In the bay scallop, the gonad condition of bay scallop is classified into six stages. Stages I–III are immature, IV is mature, and V–VI are partially spent and spent conditions respectively. Stage I gonad is small and transparent, and the only reproductive tissues seen are narrow tubules with primar ...
... In the bay scallop, the gonad condition of bay scallop is classified into six stages. Stages I–III are immature, IV is mature, and V–VI are partially spent and spent conditions respectively. Stage I gonad is small and transparent, and the only reproductive tissues seen are narrow tubules with primar ...
ID_3873_Populatio
... Trematoda, Cestoda, Nematoda, Sporozoa, Ciliates Protozoa can be divided into five groups: amoebae, intestinal flagellates, blood and tissue flagellates, multicellular flagellates, ciliates amoebae, intestinal flagellates, blood and tissue flagellates, sporozoa, ciliates multicellular flagellates, u ...
... Trematoda, Cestoda, Nematoda, Sporozoa, Ciliates Protozoa can be divided into five groups: amoebae, intestinal flagellates, blood and tissue flagellates, multicellular flagellates, ciliates amoebae, intestinal flagellates, blood and tissue flagellates, sporozoa, ciliates multicellular flagellates, u ...
Common seashore animals of Southeastern Alaska
... paddle worms, scale worms, and sea mice (as well as many others not shown here!) belong to a very large order of polychaetes called the Phyllodocida. These worms are characterized by having serially-repeated appendages called parapodia on each segment that they use like a centipede uses its legs. In ...
... paddle worms, scale worms, and sea mice (as well as many others not shown here!) belong to a very large order of polychaetes called the Phyllodocida. These worms are characterized by having serially-repeated appendages called parapodia on each segment that they use like a centipede uses its legs. In ...
Earthworm Dissection
... 3. Use a hand lens as you observe all parts of the worm, externally and internally. Find the anterior end by locating the prostomium, which is a fleshy lobe that extends over the mouth. The other end of the worm’s body is the posterior end, where the anus is located. 4. Look for the worm’s setae, wh ...
... 3. Use a hand lens as you observe all parts of the worm, externally and internally. Find the anterior end by locating the prostomium, which is a fleshy lobe that extends over the mouth. The other end of the worm’s body is the posterior end, where the anus is located. 4. Look for the worm’s setae, wh ...
Atmospheric oxygen level and the evolution of insect body size
... Figure 2. Plausible mechanisms by which atmospheric oxygen partial pressure (aPO2) might affect the evolution of insect size. Straight arrows indicate positive correlations, dashed negative, and both arrows together indicate nonlinear effects. Circles next to a trait indicate empirical support for a ...
... Figure 2. Plausible mechanisms by which atmospheric oxygen partial pressure (aPO2) might affect the evolution of insect size. Straight arrows indicate positive correlations, dashed negative, and both arrows together indicate nonlinear effects. Circles next to a trait indicate empirical support for a ...
Chapter 25: Worms and Mollusks
... digestion continues. Because flatworms have only one body opening, wastes are ejected through the mouth. Parasitic flatworms have modified feeding structures called hooks and suckers, which enable them to stay attached to their hosts. Some parasitic flatworms have a reduced digestive system and feed ...
... digestion continues. Because flatworms have only one body opening, wastes are ejected through the mouth. Parasitic flatworms have modified feeding structures called hooks and suckers, which enable them to stay attached to their hosts. Some parasitic flatworms have a reduced digestive system and feed ...
Reproductive Organs
... 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 Insect development in which the young are identical to adults except for size a ...
... 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 Insect development in which the young are identical to adults except for size a ...
Reproductive Biology and Phylogeny of Urodela
... One benefit of internal fertilization utilizing spermatophores and spermathecal storage is that it allows separation of courtship/mating and oviposition/egg brooding in both space and time, and thus allows a species to more effectively utilize the spatial and temporal habitat resources available for ...
... One benefit of internal fertilization utilizing spermatophores and spermathecal storage is that it allows separation of courtship/mating and oviposition/egg brooding in both space and time, and thus allows a species to more effectively utilize the spatial and temporal habitat resources available for ...
County of Los Angeles
... last great Ice Age, which ended about 10,000 - 11,000 years ago. This is true only where the ice sheets persisted for many centuries. In Southern California, the story is somewhat different. Locally, we have several species of native earthworms found nowhere else in the world. Most of the earthworm ...
... last great Ice Age, which ended about 10,000 - 11,000 years ago. This is true only where the ice sheets persisted for many centuries. In Southern California, the story is somewhat different. Locally, we have several species of native earthworms found nowhere else in the world. Most of the earthworm ...
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.