What is when using a dichotomous key to identify organisms what do we look at?

When using a <a href="https://www.wikiwhat.page/kavramlar/dichotomous%20key">dichotomous key</a> to identify organisms, you look at observable and contrasting characteristics or traits of the organism. The key presents a series of paired statements or questions, each describing two alternative features. You must carefully observe the organism and select the statement that best matches its characteristics. The key then directs you to another pair of statements based on your selection. This process continues until you arrive at a final identification of the organism. Important subjects to consider include:

• Morphological features: This is a broad category covering the visible structure and form of the organism, such as leaf shape, presence of specific appendages, and overall body plan.
• Anatomical features: For some keys, especially those dealing with microscopic organisms or internal structures, you might need to examine anatomical details using tools such as microscopes.
• Reproductive structures: Characteristics related to reproduction, like flower type (if it's a plant) or egg characteristics (if it's an animal), can be critical distinguishing features.
• Habitat: The environment in which the organism lives can sometimes be a distinguishing characteristic, especially if the key is specific to a particular region or ecosystem.
• Coloration: Color patterns and markings are often useful for identification, but be cautious as color can be variable within a species.
• Size: Overall size can be a distinguishing characteristic, but be aware that size can vary depending on the age or environmental conditions of the organism.

The goal is to make careful and accurate <a href="https://www.wikiwhat.page/kavramlar/observations">observations</a> and comparisons to navigate the key and arrive at the correct identification.