Monday, January 21, 2013

Big Idea 1


Big Idea 1: 2. Adaptation of an animal
An adaptation is an inherited characteristic that increases an organism's ability to survive and produce offspring in a specific environment as a result of natural selection. This hornbill will use its lengthened bill to catch prey and toss it up in the air, catching the prey in its mouth.



Big Idea 1: 3. Adaptation of a plant
An adaptation is an inherited characteristic that increases an organism's ability to survive and produce offspring in a specific environment as a result of natural selection. This plant, known as a succulent, has modified leaves that are thicker and more fleshy than typical plant leaves. These leaves are adapted to arid climates or soil conditions because they allow the plant to retain more water in its leaves.



Big Idea 1: 6. Angiosperm
This flower exemplifies an angiosperm. An angiosperm is any flowering plant.



Big Idea 1: 7. Annelid
An annelid is defined as a worm with a segmented body. This tiny earthworm is an annelid because its body clearly resembles a series of fused rings. Annelids range from less than 1 mm to 3 m in length.



Big Idea 1: 8. Arachnid
Arachnids are joint-legged, eight-legged invertebrates animals. They actually belong to the phylum arthropoda, but they are distinct because there are over 1,000,000 species in the arthropoda phylum. One type of arachnid is the spider. There are numerous spider webs visible in this photo, demonstrating the presence of many spiders in my garage.



Big Idea 1: 9. Arthropod
Shrimp are crustaceans with elongated bodies and a swimming mode of locomotion, and crustaceans are a subphylum under the phylum arthropoda. Therefore, shrimps are arthropods. Although the focus of this photo seems to be the king crab legs, the shrimps on the far left are the arthropods being referred to. Arthropods have an exoskeleton and a segmented body, but the exoskeleton of these shrimps has been removed so that they can be eaten.



Big Idea 1: 12. Bilateral Symmetry
Bilateral symmetry is symmetry of two sides of an organism along one imaginary axis. The shell of this tortoise has the same pattern (that is, a symmetrical pattern) on its left side as it does on its right one.



Big Idea 1: 13. Bryophytes
The name "bryophytes" refers to all nonvascular land plants. In other words, these plants lack an extensive transport system. The moss shown in this photograph is an example of a bryophyte because it has no vascular tissue.



Big Idea 1: 14. Chordate
These lemurs are good examples of chordates. Chordates are bilaterian (bilaterally symmetrical) animals that all have four key characteristics: a notochord; a dorsal, hollow nerve cord; pharyngeal slits; and a muscular, post-anal tail (though the tail may be lost during embryonic development.)



Big Idea 1: 16. Coelomate
A coelomate is any organism with a fluid-filled cavity called a coelom. The coelom is beneficial because organs formed inside it are protected from shocks, and they can move and develop freely. These grub worms have reduced (but still true) coeloms, so they are coelomates.



Big Idea 1: 17. Deuterostome
In deuterostomes, the first opening of the organism becomes the anus during embryonic development. Deuterostomia is a superphylum, and the phyla under it include chordates. This pheasant is a deuterostome because it is a chordate.



Big Idea 1: 19. Eubacteria
Eubacteria are prokaryotes without a cell nucleus. They are one of two types of bacteria, the other being archaebacteria. They are used in industry to produce foods such as yogurt through fermentation. This yogurt represents eubacteria because it was probably made by eubacteria.



Big Idea 1: 20. Fungi
Fungi are heterotrophs that feed by absorption. Their cell walls have chitin, whereas the cell walls of plants have cellulose. The classic example of a fungus is any mushroom, such as this one.



Big Idea 1: 23. Gnathostome
This Sumatran tiger is a gnathostome. Gnathostomes are jawed vertebrates. The tiger uses its jaws to... eat.



Big Idea 1: 24. Gymnosperm cone
A gymnosperm cone is a cone of a "naked seed" plant. That is, the seeds of the plant are not enclosed in anything; they are open to the elements. Unfortunately, I do not know what kind of tree this cone comes from, but the seeds on it are clearly not protected by anything.



Big Idea 1: 25. Gymnosperm leaf
A gymnosperm leaf is a leaf of a "naked seed" plant. Pine trees all have gymnosperm leaves - commonly known as pine needles. This picture depicts the pine needles as well as two seeds on the end of the leaf, indicating its status as a gymnosperm.


Big Idea 1: 27. Lichens
Lichens are an association of a fungus and a photosynthetic, usually unicellular partner. The fungus and the partner work together symbiotically. In this picture, a foliose (meaning "leaf-like) lichen is growing on a tree.



Big Idea 1: 28. Modified leaf of a plant
This plant in my backyard has modified leaves; the tips are pointy (and hurt when poked.) This modification is probably an adaptation to prevent animals from eating the plant.



Big Idea 1: 29. Modified root of a plant
Potatoes are examples of modified roots of plants. They are roots that have a capacity to store starch, which benefits the plant because it has a reserve of energy.


Big Idea 1: 30. Modified stem of a plant
This stem has thorns on it. The thorns are modifications to the plant stem that have probably benefited it because they discourage animals from trying to eat the plant.

No comments:

Post a Comment