Southern Two-Toed Sloth
... What do I eat and when do I eat? I am a herbivore. I feed on twigs, leaves, and fruit. I only need to come to the ground to defecate and urinate once a week because my metabolism is so slow. My specially designed long coarse hair will grow algae which I may eat or receive the nutrients from through ...
... What do I eat and when do I eat? I am a herbivore. I feed on twigs, leaves, and fruit. I only need to come to the ground to defecate and urinate once a week because my metabolism is so slow. My specially designed long coarse hair will grow algae which I may eat or receive the nutrients from through ...
Unit 3 - Section 9.1 Types of Selection Overheads
... Favours two or more variations of a trait that differ from the current population average Favours individuals at BOTH extremes Produces distinctive forms within a population (e.g., Darwin’s finches – small beaked ate small seeds and big beaked ate large seed; yet, medium beaked could not eat o ...
... Favours two or more variations of a trait that differ from the current population average Favours individuals at BOTH extremes Produces distinctive forms within a population (e.g., Darwin’s finches – small beaked ate small seeds and big beaked ate large seed; yet, medium beaked could not eat o ...
LE - 7 - Evidence for Evolution
... The same bones under the skin • limbs that perform different functions are built from the same bones How could these different organisms have the same bones? ...
... The same bones under the skin • limbs that perform different functions are built from the same bones How could these different organisms have the same bones? ...
Marine Vertebrates: Lecture 3
... Anglerfish: bioluminescent pole and lure from first ray of first dorsal fin; bioluminescence generated by symbiotic bacteria used to attract mates (males) as well as food, although males also use olfaction to find females Page 3 of 4 ...
... Anglerfish: bioluminescent pole and lure from first ray of first dorsal fin; bioluminescence generated by symbiotic bacteria used to attract mates (males) as well as food, although males also use olfaction to find females Page 3 of 4 ...
BIOL 4120: Principles of Ecology Lecture 12: Interspecific competition
... Some type of defense chemicals are maintained at high levels in plant tissues at all times ...
... Some type of defense chemicals are maintained at high levels in plant tissues at all times ...
PowerPoint Presentation - What is an adaptation?
... extinction because individuals die faster than groups. • Possible if groups exhibit differential productivity. Experimentally demonstrated in flour beetles due to changes in cannibalism ...
... extinction because individuals die faster than groups. • Possible if groups exhibit differential productivity. Experimentally demonstrated in flour beetles due to changes in cannibalism ...
Lecture 37 NEKTONIC ORGANISMS General characteristics
... Migration during life cycle -- some examples GENERAL CHARACTERISTICS Nektonic organisms are swimmers Mode of nutrition: Both.... Herbivores Carnivores (predators, scavengers) Vertebrates dominate the nekton INVERTEBRATE NEKTON -- relatively few representatives Different evolutionary branch from vert ...
... Migration during life cycle -- some examples GENERAL CHARACTERISTICS Nektonic organisms are swimmers Mode of nutrition: Both.... Herbivores Carnivores (predators, scavengers) Vertebrates dominate the nekton INVERTEBRATE NEKTON -- relatively few representatives Different evolutionary branch from vert ...
SATP-2 KINGDOM ANIMALIA part 3
... Animal Adaptations Adaptation - any characteristic that improves an organism's chance of survival ...
... Animal Adaptations Adaptation - any characteristic that improves an organism's chance of survival ...
File
... enables them to scurry sideways in a crablike motion. These appearances and behaviours are generally an adaptation to their life underneath the bark of trees. The fact that they do not use webs, and that they may chase down their prey, gives them their most commonly used name of “Huntsman”. Howe ...
... enables them to scurry sideways in a crablike motion. These appearances and behaviours are generally an adaptation to their life underneath the bark of trees. The fact that they do not use webs, and that they may chase down their prey, gives them their most commonly used name of “Huntsman”. Howe ...
LECTURE 8: Cenozoic Era 65 mya - Present
... On separate continents, two predators from different sides of the mammal family tree faced the same challenge. They had to hunt large prey to survive. Though the two species were only distantly related, natural selection favored the same trait in both—saber-teeth—for meeting this challenge. While th ...
... On separate continents, two predators from different sides of the mammal family tree faced the same challenge. They had to hunt large prey to survive. Though the two species were only distantly related, natural selection favored the same trait in both—saber-teeth—for meeting this challenge. While th ...
Relationships in the Ecosystem
... Symbiosis …the relationship between different species living in close association with one another. There are 3 types of symbiotic relationships. ...
... Symbiosis …the relationship between different species living in close association with one another. There are 3 types of symbiotic relationships. ...
4. symbiosis - Hicksville Public Schools
... Oxpeckers and zebras or rhinos the oxpecker (a bird) lives on the zebra or rhino, and eats all of the bugs and parasites on the animal. – The bird benefits by having a readily available source of food. – The zebra or rhino benefits from having the bugs removed. – when there is a danger to the zebra ...
... Oxpeckers and zebras or rhinos the oxpecker (a bird) lives on the zebra or rhino, and eats all of the bugs and parasites on the animal. – The bird benefits by having a readily available source of food. – The zebra or rhino benefits from having the bugs removed. – when there is a danger to the zebra ...
Relationships in the Ecosystem
... for food. Prey = animal that is eaten by another. Predator / Prey populations will change in response to each other’s population. ...
... for food. Prey = animal that is eaten by another. Predator / Prey populations will change in response to each other’s population. ...
Schreckstoff
In 1938, the Austrian ethologist Karl von Frisch made his first report on the existence of the chemical alarm signal known as Schreckstoff (startle/shock matter) in minnows. An alarm signal is a response produced by an individual, the “sender”, reacting to a hazard that warns other animals, the receivers, of danger. This chemical alarm signal is only released when the sender incurs mechanical damage, such as when it has been caught by a predator, and is detected by the olfactory system. When this signal reaches the receivers, they perceive a greater predation risk and exhibit an antipredator response. Since populations of fish exhibiting this trait survive more successfully, the trait is maintained via natural selection. While the evolution of this signal was once a topic of great debate, recent evidence suggests schreckstoff evolved as a defense against environmental stressors such as pathogens, parasites, and UVB radiation and that it was later co-opted by predators and prey as a chemical signal.