Big Idea 1

amniotic egg

4. Amniotic Egg - An amniotic egg is a shelled egg with an amniotic sac filled with fluid. It also contains yolk as a source of nourishment for the embryo. The chicken egg here is an example of an amniotic egg.

angiosperm

6. Angiosperm - Angiosperms are vascular seed plants that flower. The white dahlia flower in the picture is a flower with seeds.

annelid

7. Annelid - Annelid is a phylum of worms characterized by long, round, segmented bodies. The earthworm shown in the picture falls under this category.

arachnid

8. Arachnid - Arachnids are arthropods characterized by their 4 pairs of segmented legs and two-part body. The spider shown in the picture is an arachnid. It has 8 legs and a two-part body.

bilateral symmetry

12. Bilateral Symmetry - Bilateral symmetry is when a single plane divides an organism into two identical halves. This maple leaf is an example of bilateral symmetry because the right side of his body and the left side of his body are identical mirror images of each other.

bryophytes

13. Bryophytes - Bryophytes are non-vascular plants that reproduce using spores. The moss shown in the picture has no vascular tissue and uses spores to reproduce.

chordate

14. Chordate - A chordate is a member of the phylum Chordata that at some point in its life has a dorsal nerve cord, a notochord, and gill slits. The dwarf hamster pictured here is a chordate because it has had all of these features at some point in its life whether it be as an embryo or as an adult.

distinguishing characteristics between monocots and dicots - leaves

  18. Distinguishing Characteristics between Monocots and Dicots (1 photo) - Leaves: Monocots have leaves with veins that run parallel to each other, while dicots have leaves with webbed veins. The leaf on the left has webbed veins and is therefore a dicot, while the amaryllis leaf on the right has parallel running veins and is thus a monocot.

gastropod

21. Gastropod - A gastropod is an mollusk with a single, coiled shell or no shell and a muscular foot for movement. They have a distinct head with eyes and tentacles. The gold water snail shown in the picture is an example of a gastropod with its shell being the most distinct feature.

gymnosperm cone

24. Gymnosperm Cone - A gymnosperm cone is the reproductive structure of gymnosperm plants. The male cones contain pollen while the female cones contain ovules that become seeds. The pinecone pictured is an example of a gymnosperm cone.

gymnosperm leaf

25. Gymnosperm Leaf - The leaves of gymnosperms are long and needle shaped. Because the leaves have more wax and less surface area, less water evaporates from the leaves, allowing the tree to preserve water. The tree pictured here is a pine, and its leaves are gymnosperm leaves.

modified root of a plant - carrot

29. Modified Root of a Plant - Food storage roots produce cells that store a large amount of carbohydrates which are used for energy. These roots serve as a storage site for these cells and carbs. Carrots like the one in the picture are examples of this type of root.

modified stem of a plant - thorns

30. Modified Stem of a Plant - Some plants may evolve to have modified stems that protect it from something in their environment. The thorns on this rose plant protect it from grazing animals. If the animal tries to eat it, it will get stabbed by thorns which will teach it to never eat this type of plant again.

33. Organisms in Different Plant Divisions (3 photos)

pteridophyta

   1) Pteridophyta (vascular plants with spores) - The fern pictured has vascular tissue, but doesn't use seeds. Instead, it uses spores as its reproductive vessels.

coniferophyta

   2) Coniferophyta (vascular plants with cones) - The plants of the coniferophyta plant division are characterized by their pine needles, reproduction through cones, and keeping their leaves year round. The pine tree here is an example of a conifer tree.

magnoliophyta

   3) Magnoliophyta (flowering vascular plants) - The plant here uses flowers to reproduce. The plant has vascular tissue and uses flowers that use pollen for fertilization. These are the characteristics of flowering vascular plants.

34. Organisms in Same Class but Different Orders (3 photos)

order primates

   1) Order Primates (human) - My brother is a human and is therefore a member of the primate order which is a subcategory of the mammal class. Primates have forward facing eyes and binocular vision. Many primates move by swinging from branch to branch in trees or walking on their knuckles. Except for humans, primates tend to live in tropical or subtropical areas. Primates' large brains lead to an increased capacity for learning.

order carnivora

   2) Order Carnivora (cat) - These cats are members of order carnivora (meat-eaters) which is a subcategory of the mammal class. Members of order carnivora may have diverse eating habits, but they are primarily carnivorous and eat meat. Most carnivores have relatively long life spans. They have thick fur (or hair etc.) coats.

order rodentia

   3) Order Rodentia (rat) - My pet rat is a member of order rodentia (gnawing mammals) which is a subcategory of the mammal class. Order rodentia is the largest order of mammals and the members of this class are characterized by their great capacity for gnawing.

tetrapod

39. Tetrapod - Tetrapods include all four-footed vertebrates. The tortoise shown in the picture is a four-footed animal, and is therefore a tetrapod.