Photo Scavenger Hunt: Week 6

The following photos contain a yellow post-it note to ensure that I took the photos myself.

Alright, this picture is a little hard to see. On top of the middle branch is a bird and in the upper left corner is the yellow post-it. The bird kept moving around and that's why this photo kind of sucks, but it's the best I could do. Anyway, a bird living in a tree is an example of commensalism. Commensalism is any type of relationship between two species of a plant, animal, fungus, etc, in which one lives with, on, or in another without damage to either. The bird can live while the tree does nothing.

Here we see a population of weeds in my yard. A population is all the individuals of a species in a given area.

A spore is a walled, single-to many-celled, reproductive body of an organism. They are capable of giving rise to a new individual either directly or indirectly. All plants produce spores, but only mosses and ferns release them.

Homeostasis is the ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with external changes. For example, humans sweat to cool off during the hot summer days, and we shiver to produce heat during the cold winter season. This picture is kind of gross, but it's life.

In bilateral symmetry, only one plane, called the sagittal plane, will divide an organism into roughly mirror image halves (with respect to external appearance only). The two halves are often referred to as the right and left halves. Humans are a prime example of bilateral symmetry.

The cuticle layer of a plant is a continuous layer of waxy substances covering over the outer surfaces of the epidermis of plants. It contains cutin and protects against water loss, water gain, and other damage. Here we see the waxy, cuticle layer of a hosta.