Vertebrate Zoology
... • The arrangement of the organs of the body in series of similar units along the longitudinal axis of the body . • It is most clearly in annelids , the body divided both externally and internally into number of segments( metameres ). • In vertebrate, segmentation appears in muscles, nerves, and vert ...
... • The arrangement of the organs of the body in series of similar units along the longitudinal axis of the body . • It is most clearly in annelids , the body divided both externally and internally into number of segments( metameres ). • In vertebrate, segmentation appears in muscles, nerves, and vert ...
REPRODUCTION IN ANIMALS
... Also, there are other animals in the pond which may feed on eggs. Thus, production of large number of eggs and sperms is necessary to ensure fertilization of at least a few of them. Q.6. How could a single cell become such a big individual? Ans. The fusion of single sperm cell with single egg cell, ...
... Also, there are other animals in the pond which may feed on eggs. Thus, production of large number of eggs and sperms is necessary to ensure fertilization of at least a few of them. Q.6. How could a single cell become such a big individual? Ans. The fusion of single sperm cell with single egg cell, ...
Common Diseases of Chicks - Geneva Veterinary Clinic
... The disease is diagnosed based upon clinical signs and post mortem with fungal cultures being used to confirm the suspicion of brooder pneumonia. On PM the birds will have white/grey/yellow nodules in their air sacs and lungs. Once infected, birds will rarely recover as there is no suitable treatmen ...
... The disease is diagnosed based upon clinical signs and post mortem with fungal cultures being used to confirm the suspicion of brooder pneumonia. On PM the birds will have white/grey/yellow nodules in their air sacs and lungs. Once infected, birds will rarely recover as there is no suitable treatmen ...
Figure 47.0 Human embryo
... Mammalian Fertilization • Most mammals show internal fertilization • Sperm has to reach zona pellucida by penetrating follicle cells • An acrosomal reaction occurs and sperm cell enters egg • Zona pellucida hardens which blocks polyspermy • Centrosomes originate from sperm cell • Chromosomes share ...
... Mammalian Fertilization • Most mammals show internal fertilization • Sperm has to reach zona pellucida by penetrating follicle cells • An acrosomal reaction occurs and sperm cell enters egg • Zona pellucida hardens which blocks polyspermy • Centrosomes originate from sperm cell • Chromosomes share ...
You`ve probably heard of stick insects, but did you know these
... holds the record at a massive 32cm), this female Bacteria sp. has a 25cmlong body and is hanging on a vine.At 15cm long, the males are much smaller, and unlike the females, they have wings. Such sexual dimorphism is common in stick insects. ...
... holds the record at a massive 32cm), this female Bacteria sp. has a 25cmlong body and is hanging on a vine.At 15cm long, the males are much smaller, and unlike the females, they have wings. Such sexual dimorphism is common in stick insects. ...
Porifera
... Subphylum: Vertebrata; Class Agnatha • jawless fish lampreys, hagfish • Most primitive, living vertebrates • Cephalization in cranium • closed circulatory system • Lack paired appendages; cartilaginous skeleton; notochord throughout life; rasping mouth, no jaw • Predators preying on fishes ...
... Subphylum: Vertebrata; Class Agnatha • jawless fish lampreys, hagfish • Most primitive, living vertebrates • Cephalization in cranium • closed circulatory system • Lack paired appendages; cartilaginous skeleton; notochord throughout life; rasping mouth, no jaw • Predators preying on fishes ...
What is in vitro fertilisation (IVF) and how does it work?
... Eggs are usually collected by ultrasound guidance under sedation. This involves a needle being inserted into the scanning probe and into each ovary. The eggs are, in turn, collected through the needle. Cramping and a small amount of vaginal bleeding can occur after the procedure. Step 5: fertilising ...
... Eggs are usually collected by ultrasound guidance under sedation. This involves a needle being inserted into the scanning probe and into each ovary. The eggs are, in turn, collected through the needle. Cramping and a small amount of vaginal bleeding can occur after the procedure. Step 5: fertilising ...
Presentation - Students Discover
... • Generally blood is needed for egg production and flight. In some species, blood increases egg production • Blood offers mosquitoes concentrated nutrients and proteins ...
... • Generally blood is needed for egg production and flight. In some species, blood increases egg production • Blood offers mosquitoes concentrated nutrients and proteins ...
Animals
... Superclass Gnathostomata, I Class: Chondrichthyes~ Sharks, skates, rays Cartilaginous fishes; well developed jaws and paired fins; continual water flow over gills (gas exchange); lateral line system (water pressure changes) Life cycles: Oviparous- eggs hatch outside mother’s body Ovoviviparous- reta ...
... Superclass Gnathostomata, I Class: Chondrichthyes~ Sharks, skates, rays Cartilaginous fishes; well developed jaws and paired fins; continual water flow over gills (gas exchange); lateral line system (water pressure changes) Life cycles: Oviparous- eggs hatch outside mother’s body Ovoviviparous- reta ...
FACT Spiny Leaf Insects SHEET
... have to try out a few different varieties to find one that they like to eat. They have also been known to eat wattle and rose leaves, which will change their colouring from brown to green. Fresh leaves should be provided every 2 – 3 days and keeping the leaves in a jar of water will help maintain th ...
... have to try out a few different varieties to find one that they like to eat. They have also been known to eat wattle and rose leaves, which will change their colouring from brown to green. Fresh leaves should be provided every 2 – 3 days and keeping the leaves in a jar of water will help maintain th ...
Advice for veterinarians on drug use and withholding periods in
... the use of the product with the owner and provide a relatively short WHP on their written advice such that it can be easily complied with and would fulfil the legal requirements of the legislation. Obviously this should only be done where the veterinarian has discussed the residue issue with the own ...
... the use of the product with the owner and provide a relatively short WHP on their written advice such that it can be easily complied with and would fulfil the legal requirements of the legislation. Obviously this should only be done where the veterinarian has discussed the residue issue with the own ...
Chapter 8
... develop within a fluid-filled sac that is contained within a shell or the uterus. Organisms with these adaptations form a monophyletic group called amniotes. Allows for embryo to develop away from water. ...
... develop within a fluid-filled sac that is contained within a shell or the uterus. Organisms with these adaptations form a monophyletic group called amniotes. Allows for embryo to develop away from water. ...
Ch 47 Animal Development Abbreviated
... • depolarizes the egg cell membrane • sets up a fast block to polyspermy • Not seen in mammals • Charge inside of egg changes from ...
... • depolarizes the egg cell membrane • sets up a fast block to polyspermy • Not seen in mammals • Charge inside of egg changes from ...
sheep-parasites - Manitoba Sheep Association
... Dose when needed (egg counts, FAMACHA, BCS) Refugia ...
... Dose when needed (egg counts, FAMACHA, BCS) Refugia ...
Captive breeding of the Montane trinket snake (Coelognathus
... he Montane trinket snake Coelognathus helena monticollaris (Fig.1) is native to South Central Asia. In India, it is endemic to the Western Ghats and found in Tamil Nadu, Kerala, Karnataka and Maharashtra states (Whitaker & Captain 2008). The Western Ghats region is cooler and with higher rainfall an ...
... he Montane trinket snake Coelognathus helena monticollaris (Fig.1) is native to South Central Asia. In India, it is endemic to the Western Ghats and found in Tamil Nadu, Kerala, Karnataka and Maharashtra states (Whitaker & Captain 2008). The Western Ghats region is cooler and with higher rainfall an ...
Animal Development
... develop within a fluid-filled sac that is contained within a shell or the uterus. Organisms with these adaptations form a monophyletic group called amniotes. Allows for embryo to develop away from water. ...
... develop within a fluid-filled sac that is contained within a shell or the uterus. Organisms with these adaptations form a monophyletic group called amniotes. Allows for embryo to develop away from water. ...
Animal Development
... membranous sac that encloses the embryo. Protects embryo from shock. Yolk sac – stores yolk and pre-dates the amniotes by millions of years. ...
... membranous sac that encloses the embryo. Protects embryo from shock. Yolk sac – stores yolk and pre-dates the amniotes by millions of years. ...
Sponges, Cnidarians, Flatworms, Roundworms
... • Sponges are made of 4 types of cells: – Pore cells (surround pores) – Collar cells (line sponge interior, each have a flagellum that creates water current pulling water into sponge body) – Epithelial-like cells (contract in response to touch) – Amoebocytes (carry nutrients, aid in reproduction, pr ...
... • Sponges are made of 4 types of cells: – Pore cells (surround pores) – Collar cells (line sponge interior, each have a flagellum that creates water current pulling water into sponge body) – Epithelial-like cells (contract in response to touch) – Amoebocytes (carry nutrients, aid in reproduction, pr ...
Classification of Animals
... Lay jelly coated eggs in water Lives on land and water Ectotherms ...
... Lay jelly coated eggs in water Lives on land and water Ectotherms ...
Saladin, Human Anatomy 3e
... 1. Sperm and eggs are called the sex cells or gametes, and are produced by a process called gametogenesis. 2. Gametes are haploid, with 23 chromosomes—half the number found in most cells of the body. When two gametes unite, they form a zygote with 46 chromosomes, the normal human diploid number. 3. ...
... 1. Sperm and eggs are called the sex cells or gametes, and are produced by a process called gametogenesis. 2. Gametes are haploid, with 23 chromosomes—half the number found in most cells of the body. When two gametes unite, they form a zygote with 46 chromosomes, the normal human diploid number. 3. ...
Invertebrate unit
... • lives in intestines • feeds on blood, causes major damage to intestines • eggs deposited on soil from contaminated wastes • larvae live in soil • burrow into feet or exposed skin of host • larvae travel through bloodstream, to lungs, coughed up, swallowed • attach to intestinal wall where they mat ...
... • lives in intestines • feeds on blood, causes major damage to intestines • eggs deposited on soil from contaminated wastes • larvae live in soil • burrow into feet or exposed skin of host • larvae travel through bloodstream, to lungs, coughed up, swallowed • attach to intestinal wall where they mat ...
Ch 33 part 1
... mantle, and a visceral mass. -Slugs, snails, oysters, clams, octopus, and squids. -Marine and freshwater -Soft bodied with hard shell; slugs, octopus, and squids have lost or reduced during their evolution. ...
... mantle, and a visceral mass. -Slugs, snails, oysters, clams, octopus, and squids. -Marine and freshwater -Soft bodied with hard shell; slugs, octopus, and squids have lost or reduced during their evolution. ...
Endocrine System
... endocrine glands to produce hormones Action: hormones cause a slower, but longer lasting response than the nerve impulses Target cells: the cells the hormones interact with, they recognize the hormone’s structure ...
... endocrine glands to produce hormones Action: hormones cause a slower, but longer lasting response than the nerve impulses Target cells: the cells the hormones interact with, they recognize the hormone’s structure ...
Egg
An egg is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own, at which point the animal hatches. An egg results from fertilization of an ovum. Most arthropods, vertebrates, and mollusks lay eggs, although some do not, such as scorpions and most mammals.Reptile eggs, bird eggs, and monotreme eggs are laid out of water, and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a favorable temperature range (warm) while the embryo grows. When the embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth with which to crack, pip, or break the eggshell or covering.The largest recorded egg is from a whale shark, and was 30 cm × 14 cm × 9 cm (11.8 in × 5.5 in × 3.5 in) in size; whale shark eggs normally hatch within the mother. At 1.5 kg (3.3 lb) and up to 17.8 cm × 14 cm (7.0 in × 5.5 in), the ostrich egg is the largest egg of any living bird, though the extinct elephant bird and some dinosaurs laid larger eggs. The bee hummingbird produces the smallest known bird egg, which weighs half of a gram (around 0.02 oz). The eggs laid by some reptiles and most fish can be even smaller, and those of insects and other invertebrates can be much smaller still.Reproductive structures similar to the egg in other kingdoms are termed ""spores,"" or in spermatophytes ""seeds,"" or in gametophytes ""egg cells"".