ppt lecture
... 4 Most animals also undergo gastrulation, a rearrangement of the embryo in which one end of the embryo folds inward, expands, and eventually fills the blastocoel, producing layers of embryonic tissues: the ectoderm (outer layer) and the endoderm (inner layer). ...
... 4 Most animals also undergo gastrulation, a rearrangement of the embryo in which one end of the embryo folds inward, expands, and eventually fills the blastocoel, producing layers of embryonic tissues: the ectoderm (outer layer) and the endoderm (inner layer). ...
Document
... 1. Which of the following is not a characteristic of most members of the phylum Annelida? a. hydrostatic skeleton b. segmentation c. pseudocoelom d. closed circulatory system e. all of the above are characteristics of Annelida 2. Which phylum is characterized by animals that have a segmented body? a ...
... 1. Which of the following is not a characteristic of most members of the phylum Annelida? a. hydrostatic skeleton b. segmentation c. pseudocoelom d. closed circulatory system e. all of the above are characteristics of Annelida 2. Which phylum is characterized by animals that have a segmented body? a ...
Lesson Overview
... As the first cells of most animals develop, they differentiate into specialized cells that are organized into tissues. A tissue is a group of cells that perform a similar function. Animals typically have several types of tissues, including epithelial, muscle, connective, and nervous tissues. Epithel ...
... As the first cells of most animals develop, they differentiate into specialized cells that are organized into tissues. A tissue is a group of cells that perform a similar function. Animals typically have several types of tissues, including epithelial, muscle, connective, and nervous tissues. Epithel ...
25.2
... As the first cells of most animals develop, they differentiate into specialized cells that are organized into tissues. A tissue is a group of cells that perform a similar function. Animals typically have several types of tissues, including epithelial, muscle, connective, and nervous tissues. Epithel ...
... As the first cells of most animals develop, they differentiate into specialized cells that are organized into tissues. A tissue is a group of cells that perform a similar function. Animals typically have several types of tissues, including epithelial, muscle, connective, and nervous tissues. Epithel ...
unit 1: introduction to biology
... marine arthropods use gills, which are composed of a vascularized, thinwalled tissue specialized for gas exchange terrestrial forms have either book lungs, which are body invaginations (e.g., spiders) or tracheae, which are air tubes that serve as ways to deliver oxygen directly to cells. (e.g., ...
... marine arthropods use gills, which are composed of a vascularized, thinwalled tissue specialized for gas exchange terrestrial forms have either book lungs, which are body invaginations (e.g., spiders) or tracheae, which are air tubes that serve as ways to deliver oxygen directly to cells. (e.g., ...
Today:
... Central digestive compartment (gastrovascular cavity) with single opening Can be either a polyp or medusa Stinging cells called cnidocytes contain capsules, the nematocyst, for snagging and poisoning prey ...
... Central digestive compartment (gastrovascular cavity) with single opening Can be either a polyp or medusa Stinging cells called cnidocytes contain capsules, the nematocyst, for snagging and poisoning prey ...
Chapter Three: Phylum Cnidaria
... The Cnidarians are a group of fairly simple animals who all have one thing in common, they have stinging cells. They are all aquatic and can be found mainly in salt water although there are a few freshwater species. They include the jellyfishes, anemones, corals and hydras. What do Cnidarians look l ...
... The Cnidarians are a group of fairly simple animals who all have one thing in common, they have stinging cells. They are all aquatic and can be found mainly in salt water although there are a few freshwater species. They include the jellyfishes, anemones, corals and hydras. What do Cnidarians look l ...
Lab 8 – Porifera, Cnidaria, and Platyhelminthes
... animals called Chordates. In this activity we focus on some of the major animal phyla other than Chordates – the phyla that contain invertebrate animals. While this is only a small sample of those animals, it will show you some of the breadth of invertebrate diversity. For each representative animal ...
... animals called Chordates. In this activity we focus on some of the major animal phyla other than Chordates – the phyla that contain invertebrate animals. While this is only a small sample of those animals, it will show you some of the breadth of invertebrate diversity. For each representative animal ...
Animals with Bilateral Symmetry
... (a) An octopus can crawl rapidly by using its eight suckered tentacles, and it can alter its color and skin texture to blend with its surroundings. In emergencies, this mollusk can jet backward by vigorously contracting its mantle. Octopuses and squid can emit clouds of dark purple ink to confuse pu ...
... (a) An octopus can crawl rapidly by using its eight suckered tentacles, and it can alter its color and skin texture to blend with its surroundings. In emergencies, this mollusk can jet backward by vigorously contracting its mantle. Octopuses and squid can emit clouds of dark purple ink to confuse pu ...
Animal classification
... Though all members of Animalia are multicellular, all of them do not exhibit the same pattern of organisation of cells. For example, in sponges, the cells are arranged as loose cell aggregates, i.e., they exhibit cellular level of organisation. Some division of labour (activities) occur among the ce ...
... Though all members of Animalia are multicellular, all of them do not exhibit the same pattern of organisation of cells. For example, in sponges, the cells are arranged as loose cell aggregates, i.e., they exhibit cellular level of organisation. Some division of labour (activities) occur among the ce ...
Jellies - ancient ocean drifters
... through which they filter water and trap microscopic prey in the process. Box jellies (Carybdea alata), frilly-mouth jellies (Chrysaora sp.) and red-banded jellies (Chrysaora hysoscella) are found predominantly off the west coast. Box jellies have a very deep bell from which long thin tendrils hang. ...
... through which they filter water and trap microscopic prey in the process. Box jellies (Carybdea alata), frilly-mouth jellies (Chrysaora sp.) and red-banded jellies (Chrysaora hysoscella) are found predominantly off the west coast. Box jellies have a very deep bell from which long thin tendrils hang. ...
Norms and standards for hunting methods in South Africa
... captive-bred indigenous birds of prey that are no longer required may be kept In captivity for breeding purposes, released into the wild, or passed onto another registered falconer approved or nominated by their club; ...
... captive-bred indigenous birds of prey that are no longer required may be kept In captivity for breeding purposes, released into the wild, or passed onto another registered falconer approved or nominated by their club; ...
chapter26_section01_edit
... Some animals stay at a single spot, but most can move. Most animals have muscles or musclelike tissues. Muscle contraction enables motile animals to move around by working in combination with a support structure called a skeleton. Muscles also help even sedentary animals feed and pump water and flui ...
... Some animals stay at a single spot, but most can move. Most animals have muscles or musclelike tissues. Muscle contraction enables motile animals to move around by working in combination with a support structure called a skeleton. Muscles also help even sedentary animals feed and pump water and flui ...
chapter26_section01_edit
... Some animals stay at a single spot, but most can move. Most animals have muscles or musclelike tissues. Muscle contraction enables motile animals to move around by working in combination with a support structure called a skeleton. Muscles also help even sedentary animals feed and pump water and flui ...
... Some animals stay at a single spot, but most can move. Most animals have muscles or musclelike tissues. Muscle contraction enables motile animals to move around by working in combination with a support structure called a skeleton. Muscles also help even sedentary animals feed and pump water and flui ...
What is an animal?
... for distinguishing an animal from other life forms, five criteria, when taken together, create a reasonable definition. (1) Animals are multicellular, heterotrophic eukaryotes. • They must take in preformed organic molecules through ingestion, eating other organisms or organic material that is decom ...
... for distinguishing an animal from other life forms, five criteria, when taken together, create a reasonable definition. (1) Animals are multicellular, heterotrophic eukaryotes. • They must take in preformed organic molecules through ingestion, eating other organisms or organic material that is decom ...
six key transitions in body plan
... GENERAL FEATURES OF ANIMALS • Animals share many important characteristics, such as they: ...
... GENERAL FEATURES OF ANIMALS • Animals share many important characteristics, such as they: ...
Concepts of Biology - Amazon Simple Storage Service (S3)
... While we can easily identify dogs, lizards, fish, spiders, and worms as animals, other animals, such as corals and sponges, might be easily mistaken as plants or some other form of life. Yet scientists have recognized a set of common characteristics shared by all animals, including sponges, jellyfis ...
... While we can easily identify dogs, lizards, fish, spiders, and worms as animals, other animals, such as corals and sponges, might be easily mistaken as plants or some other form of life. Yet scientists have recognized a set of common characteristics shared by all animals, including sponges, jellyfis ...
Write Your Own Guidebook! - Maggie`s Earth Adventures
... animals given. Pretend that you are writing for a friend who has never seen or heard about these animals. You want to give the reader a clear picture of what the animal looks like and how it lives. Make your writing very descriptive. If there is a word you don’t know, use a dictionary to find out it ...
... animals given. Pretend that you are writing for a friend who has never seen or heard about these animals. You want to give the reader a clear picture of what the animal looks like and how it lives. Make your writing very descriptive. If there is a word you don’t know, use a dictionary to find out it ...
Animal Diversity
... Fate of the Blastopore • The blastopore forms during gastrulation and connects the archenteron to the exterior of the ...
... Fate of the Blastopore • The blastopore forms during gastrulation and connects the archenteron to the exterior of the ...
Chapter 32
... Fate of the Blastopore • The blastopore forms during gastrulation and connects the archenteron to the exterior of the ...
... Fate of the Blastopore • The blastopore forms during gastrulation and connects the archenteron to the exterior of the ...
COCKROACH (Madagascar Hissing)
... Reproduction: Within her genital canal the female forms hard cocoons (oothecae), each containing an average of 12-25 eggs. The female carries the oothecae around in her abdomen. She has been seen to extrude the egg case and then reabsorb it. The nymphs are hatched inside her body. They are white whe ...
... Reproduction: Within her genital canal the female forms hard cocoons (oothecae), each containing an average of 12-25 eggs. The female carries the oothecae around in her abdomen. She has been seen to extrude the egg case and then reabsorb it. The nymphs are hatched inside her body. They are white whe ...
Chapter 18: Vertebrate Animals
... The largest group of vertebrates—fish—lives in water. Fish are ectotherms that can be found in warm desert pools and the subfreezing Arctic Ocean. Some species are adapted to swim in shallow freshwater streams and others in salty ocean depths. Fish have fleshy filaments called gills, shown in Figure ...
... The largest group of vertebrates—fish—lives in water. Fish are ectotherms that can be found in warm desert pools and the subfreezing Arctic Ocean. Some species are adapted to swim in shallow freshwater streams and others in salty ocean depths. Fish have fleshy filaments called gills, shown in Figure ...
Animal Quiz
... 1. Which of the following is not a characteristic of most members of the phylum Annelida? a. hydrostatic skeleton b. segmentation c. pseudocoelom d. closed circulatory system e. all of the above are characteristics of Annelida 2. Which phylum is characterized by animals that have a segmented body? a ...
... 1. Which of the following is not a characteristic of most members of the phylum Annelida? a. hydrostatic skeleton b. segmentation c. pseudocoelom d. closed circulatory system e. all of the above are characteristics of Annelida 2. Which phylum is characterized by animals that have a segmented body? a ...
Concepts of Biology - Amazon Simple Storage Service (S3)
... system and the body wall. It houses organs such as the kidneys and spleen, and contains the circulatory system. Triploblasts that do not develop a coelom are called acoelomates, and their mesoderm region is completely filled with tissue, although they have a gut cavity. Examples of acoelomates inclu ...
... system and the body wall. It houses organs such as the kidneys and spleen, and contains the circulatory system. Triploblasts that do not develop a coelom are called acoelomates, and their mesoderm region is completely filled with tissue, although they have a gut cavity. Examples of acoelomates inclu ...
Animal coloration
Animal coloration is the general appearance of an animal resulting from the reflection or emission of light from its surfaces. Some animals are brightly coloured, while others are hard to see. In some species, such as the peacock, the male has strong patterns, conspicuous colours and is iridescent, while the female is far less visible.There are several separate reasons why animals have evolved colours. Camouflage enables an animal to remain hidden from view. Signalling enables an animal to communicate information such as warning of its ability to defend itself (aposematism). Animals also use colour in advertising, signalling services such as cleaning to animals of other species; to signal sexual status to other members of the same species; and in mimicry, taking advantage of another species' warning coloration. Some animals use colour to divert attacks by startle (deimatic behaviour), surprising a predator e.g. with eyespots or other flashes of colour, and possibly by motion dazzle, confusing a predator's attack by moving a bold pattern (such as zebra stripes) rapidly. Some animals are coloured for physical protection, such as having pigments in the skin to protect against sunburn, while some frogs can lighten or darken their skin for temperature regulation. Finally, animals can be coloured incidentally. For example, blood is red because the haem pigment needed to carry oxygen is red. Animals coloured in these ways can have striking natural patterns.Animals produce colour in different ways. Pigments are particles of coloured material. Chromatophores are cells containing pigment, which can change their size to make their colour more or less visible. Some animals, including many butterflies and birds, have microscopic structures in scales, bristles or feathers which give them brilliant iridescent colours. Other animals including squid and some deep-sea fish can produce light, sometimes of different colours. Animals often use two or more of these mechanisms together to produce the colours and effects they need.