In ontogeny, in phylogeny, man grows and moves spirally The human foetus,
... Until the age of 10 years for girls and 12 years for boys, both sexes exhibit almost the same increases in trunk length but usually boys have longer trunks. Boys are generally taller, thus prior to adolescence, boys have relatively shorter legs than girls regarding total body length. ...
... Until the age of 10 years for girls and 12 years for boys, both sexes exhibit almost the same increases in trunk length but usually boys have longer trunks. Boys are generally taller, thus prior to adolescence, boys have relatively shorter legs than girls regarding total body length. ...
Slide 1
... Respiration is by way of compact lungs attached to ribs and connected to thin-walled air sacs extending between internal organs, voice formed from the syrinx at the base of the trachea ...
... Respiration is by way of compact lungs attached to ribs and connected to thin-walled air sacs extending between internal organs, voice formed from the syrinx at the base of the trachea ...
Biology: Concepts and Connections, 6e (Campbell)
... pairs of legs, one on each of the three segments of the thorax. Which option best describes how these pairs of legs develop and evolve? A) A single gene controls the development of all six legs. Thus within a species, all three pairs of legs are identical. B) The leg pairs all influence each other d ...
... pairs of legs, one on each of the three segments of the thorax. Which option best describes how these pairs of legs develop and evolve? A) A single gene controls the development of all six legs. Thus within a species, all three pairs of legs are identical. B) The leg pairs all influence each other d ...
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... much of that power to the trunk from mid- to late stance (Fig. 4: SOL, Walking 20–50% gait cycle, dashed line 40, dash–dot line o0), then in late stance, simultaneously, generated power directly to the trunk (Fig. 4: SOL, Walking, 30–50% gait cycle, solid line 40) to provide body support during mi ...
... much of that power to the trunk from mid- to late stance (Fig. 4: SOL, Walking 20–50% gait cycle, dashed line 40, dash–dot line o0), then in late stance, simultaneously, generated power directly to the trunk (Fig. 4: SOL, Walking, 30–50% gait cycle, solid line 40) to provide body support during mi ...
The Pond Pack
... A healthy British pond can be home to a vast diversity of invertebrates over 115 species.; Some of which only complete part of their lifecycle in the pond whilst others need an aquatic environment for all of their lifecycle. Most species are insects there are also crustaceans, annelids (worms), snai ...
... A healthy British pond can be home to a vast diversity of invertebrates over 115 species.; Some of which only complete part of their lifecycle in the pond whilst others need an aquatic environment for all of their lifecycle. Most species are insects there are also crustaceans, annelids (worms), snai ...
Child`s Booklet C - Nancy Larson® Science
... toke ploce in the lungs of mqmmqls, birds, reptiles, ond most odult omphibions when they breothe. The exchange of oxygen ond corbon dioxide in f ish ond some young omphibions tokes place in gills. Some omphibions, such os solomonders, con olso qbsorb ...
... toke ploce in the lungs of mqmmqls, birds, reptiles, ond most odult omphibions when they breothe. The exchange of oxygen ond corbon dioxide in f ish ond some young omphibions tokes place in gills. Some omphibions, such os solomonders, con olso qbsorb ...
Edward O. Wilson. The Villablanca Connection
... them have sexual reproduction by means of spermatozoa (=male gametes) and ova (=female gametes) that fuse together to form the zygote. When this happens inside the body of the female it is called internal fertilization and when this happens outside the body of the female, directly in the water, it i ...
... them have sexual reproduction by means of spermatozoa (=male gametes) and ova (=female gametes) that fuse together to form the zygote. When this happens inside the body of the female it is called internal fertilization and when this happens outside the body of the female, directly in the water, it i ...
The Vertebrates - Austin Community College
... all are marine about 18” long; largest known is almost 4’ long found in deep waters !almost completely blind; eyes have degenerated hagfish are scavengers !eat dead or dying fish, molluscs, annelids, etc ...
... all are marine about 18” long; largest known is almost 4’ long found in deep waters !almost completely blind; eyes have degenerated hagfish are scavengers !eat dead or dying fish, molluscs, annelids, etc ...
Crayfish Dissection
... protects the crayfish from predators. The carapace is a saddlelike covering over the cephalothorax. A transverse groove separates the fused head from the thoracic region. The rostrum is an anterior, pointed extension of the head. The abdomen consists of several segments and is terminated by the tels ...
... protects the crayfish from predators. The carapace is a saddlelike covering over the cephalothorax. A transverse groove separates the fused head from the thoracic region. The rostrum is an anterior, pointed extension of the head. The abdomen consists of several segments and is terminated by the tels ...
Review Insights into the evolution of human bipedalism
... can provide valuable insights into the biomechanical and consistent with the anatomy of early hominids and may physiological characteristics of locomotion in modern have been an effective gait for a small biped with humans. The walking gaits of humans, other bipeds and relatively small and less stab ...
... can provide valuable insights into the biomechanical and consistent with the anatomy of early hominids and may physiological characteristics of locomotion in modern have been an effective gait for a small biped with humans. The walking gaits of humans, other bipeds and relatively small and less stab ...
What Is an Animal?
... distraction to defend their young. When a predator is near, a mother killdeer may pretend to have a broken wing and move away from her young. This action distracts the predator’s attention from the young so they will remain safe. Defensive behavior also helps animals protect themselves from predator ...
... distraction to defend their young. When a predator is near, a mother killdeer may pretend to have a broken wing and move away from her young. This action distracts the predator’s attention from the young so they will remain safe. Defensive behavior also helps animals protect themselves from predator ...
Chapter 29 Foldable Work Comparing Invertebrates
... INSIDE: ( First sentence under this heading AND Key Concept page 752) ...
... INSIDE: ( First sentence under this heading AND Key Concept page 752) ...
Lab 8. Arthropods
... maxillipeds, which hold food during eating. The chelipeds are the large claws that the crayfish uses for defense and to capture prey. Each of the four remaining segments contains a pair of walking legs. In the abdomen, the first five segments each have a pair of swimmerets, which create water curren ...
... maxillipeds, which hold food during eating. The chelipeds are the large claws that the crayfish uses for defense and to capture prey. Each of the four remaining segments contains a pair of walking legs. In the abdomen, the first five segments each have a pair of swimmerets, which create water curren ...
Taxonomic Key to Benthic Macroinvertebrates
... The purpose of this taxonomic key is to assist volunteer monitors, who are not trained in taxonomy, with the identification of benthic macroinvertebrates found in Indiana. This key is a simplified version of more complex keys. The taxonomic level of this key is intended for use by citizen monitoring ...
... The purpose of this taxonomic key is to assist volunteer monitors, who are not trained in taxonomy, with the identification of benthic macroinvertebrates found in Indiana. This key is a simplified version of more complex keys. The taxonomic level of this key is intended for use by citizen monitoring ...
Characteristics ~
... Though not all animals have a skeleton, those that do can be divided into two groups: – Those with an exoskeleton – a hard, waxy coating on the outside of the body that protects internal organs, provides a framework for support, and a place for muscle attachment. ...
... Though not all animals have a skeleton, those that do can be divided into two groups: – Those with an exoskeleton – a hard, waxy coating on the outside of the body that protects internal organs, provides a framework for support, and a place for muscle attachment. ...
Heart Chambers - Cloudfront.net
... ancestors that vertebrates share with tunicates and lancelets The cladogram in the figure at right shows chordate phylogeny—how the different groups of living chordates are related to one another and to their invertebrate ancestors It also shows the evolution of distinctly vertebrate features, such ...
... ancestors that vertebrates share with tunicates and lancelets The cladogram in the figure at right shows chordate phylogeny—how the different groups of living chordates are related to one another and to their invertebrate ancestors It also shows the evolution of distinctly vertebrate features, such ...
Animal Origins and the Evolution of Body Plans
... overall shape, described in part by its symmetry. A symmetrical animal can be divided along at least one plane into similar halves. Animals that have no plane of symmetry are said to be asymmetrical. Many sponges are asymmetrical, but most animals have some kind of symmetry. The simplest form of sym ...
... overall shape, described in part by its symmetry. A symmetrical animal can be divided along at least one plane into similar halves. Animals that have no plane of symmetry are said to be asymmetrical. Many sponges are asymmetrical, but most animals have some kind of symmetry. The simplest form of sym ...
Phylum Annelida (Segmented Worms)
... allows more efficient hydrostatic skeleton for burrowing and movement ...
... allows more efficient hydrostatic skeleton for burrowing and movement ...
Lobsters - csnmarsci
... •The lobster’s body is divided into two main segments – the cephalothorax and the abdomen. •The cephalothorax comprises the head and the chest regions. •The abdomen includes the tail. •The part of the exoskeleton that covers the head and chest regions is called the carapace. •Lobsters have five pai ...
... •The lobster’s body is divided into two main segments – the cephalothorax and the abdomen. •The cephalothorax comprises the head and the chest regions. •The abdomen includes the tail. •The part of the exoskeleton that covers the head and chest regions is called the carapace. •Lobsters have five pai ...
File
... attach themselves to the rocks. Inside the carapace, the animal lies on its back, with its limbs projecting upwards. Segmentation is usually indistinct, and the body is more or less evenly divided between the head and thorax, with little, if any, abdomen. Adult barnacles have few appendages on their ...
... attach themselves to the rocks. Inside the carapace, the animal lies on its back, with its limbs projecting upwards. Segmentation is usually indistinct, and the body is more or less evenly divided between the head and thorax, with little, if any, abdomen. Adult barnacles have few appendages on their ...
Unique Characteristics
... attach themselves to the rocks. Inside the carapace, the animal lies on its back, with its limbs projecting upwards. Segmentation is usually indistinct, and the body is more or less evenly divided between the head and thorax, with little, if any, abdomen. Adult barnacles have few appendages on their ...
... attach themselves to the rocks. Inside the carapace, the animal lies on its back, with its limbs projecting upwards. Segmentation is usually indistinct, and the body is more or less evenly divided between the head and thorax, with little, if any, abdomen. Adult barnacles have few appendages on their ...
Intro to Animals PPT
... Freshwater lobe-fins with both lungs and gills; sister group of tetrapods ...
... Freshwater lobe-fins with both lungs and gills; sister group of tetrapods ...
Chapter 18: Vertebrate Animals
... are classified as jawless fish, like the one in Figure 6. Jawless fish have scaleless, long, tubelike bodies; an endoskeleton made of cartilage; and a round, muscular mouth without a jaw. But the mouth contains sharp, toothlike structures. One type of jawless fish, the lamprey, attaches itself to a ...
... are classified as jawless fish, like the one in Figure 6. Jawless fish have scaleless, long, tubelike bodies; an endoskeleton made of cartilage; and a round, muscular mouth without a jaw. But the mouth contains sharp, toothlike structures. One type of jawless fish, the lamprey, attaches itself to a ...
Animals and Animal Diversity
... • Rotifers are tiny animals that inhabit fresh water, the ocean, and damp soil • Rotifers have an alimentary canal, a digestive tube with a separate mouth and anus that lies within a fluid-filled pseudocoelom • Rotifers reproduce by parthenogenesis, in which females produce offspring from unfertiliz ...
... • Rotifers are tiny animals that inhabit fresh water, the ocean, and damp soil • Rotifers have an alimentary canal, a digestive tube with a separate mouth and anus that lies within a fluid-filled pseudocoelom • Rotifers reproduce by parthenogenesis, in which females produce offspring from unfertiliz ...
Mollusks, Worms, Arthropods, Echinoderms
... washing them away. Scallops, shown in Figure 3, escape predators by rapidly opening and closing their shells. As water is forced out, the scallop moves rapidly in the opposite direction. ...
... washing them away. Scallops, shown in Figure 3, escape predators by rapidly opening and closing their shells. As water is forced out, the scallop moves rapidly in the opposite direction. ...
Terrestrial locomotion
Terrestrial locomotion has evolved as animals adapted from aquatic to terrestrial environments. Locomotion on land raises different problems than that in water, with reduced friction being replaced by the effects of gravity.There are three basic forms of locomotion found among terrestrial animalsLegged - Moving by using appendagesLimbless locomotion - moving without legs, primarily using the body itself as a propulsive structure.Rolling - rotating the body over the substrate