Dichotomous key why two

For example, distinguishing obvious visible characteristics, such as structures for water movement in woody or herbaceous plant growth is straightforward. However, it should be noted that leaves, flowers, and fruit will not typically be available at the same time and return visits may be needed. Furthermore, differentiating minute plant parts such as reproductive structures requires the use of a hand lens or low magnification microscope for inspection and a thorough understanding of the descriptive terminology used in a dichotomous key.

Use the dichotomous key below to identify the taxonomic group to which the specimen belongs. Show the steps number and letter in the key that you followed to arrive at the identify of the specimen 1 a leaf broad Araicaria 2 a leaf parallel veined Cynodon b leaf net-veined Grevellea 4 a leaf fleshy Kalanchoa b leaf not fleshy Brassica 6 a leaf purple Tradescantia b leaf green Commelina Steps — 1a, 2b, 3a, 4b, 5b Identify — Brassica ii You have been provided with four animals labeled K mature adult housefly , L mature adult grasshopper, M maize flour beetle and N worker termite use the dichotomous key below to identify the specimens.

Write down in the correct order, the steps number and letter in the key that you followed to arrive at your answer. Dichotomous key 1 a animal with wings Diptera 3 a with membranous wings Metabolic Molecules 2. Water 3. Protein 5. Enzymes 6. Cell Respiration 9. Photosynthesis 3: Genetics 1.

Genes 2. Chromosomes 3. Meiosis 4. Inheritance 5. Genetic Modification 4: Ecology 1. Energy Flow 3. Carbon Cycling 4. Climate Change 5: Evolution 1. Evolution Evidence 2. Natural Selection 3. Classification 4. Cladistics 6: Human Physiology 1.