1. Name the branch of biology that involves the study of:

Here are the solutions to the questions: 1. Name the branch of biology that involves the study of: a) The branch of biology that involves the study of organisms for the sake of classifying them is Taxonomy. b) The branch of biology that involves the study of microscopic organisms is Microbiology. 2. The diagram below represents a plant a) The plant shown is a fern. Ferns belong to the division Pteridophyta. b) Three reasons for this classification are: • They possess true roots, stems, and leaves. • They reproduce by spores rather than seeds or flowers. • They have vascular tissues (xylem and phloem) for transport. 3. A student estimating a cell of an onion epidermal cell observed the following on the microscope field of view using a transparent ruler. The student identifies 20 cells across the field of view. Calculate the size of the cell in micrometres. Step 1: Determine the total length of the field of view. Assuming each major division on the ruler represents $1 \text{ mm}$, and there are $4$ major divisions across the field of view, the total length of the field of view is $4 \text{ mm}$. Step 2: Calculate the size of one cell in millimetres. $$ \text{Size of one cell} = \frac{\text{Total length of field of view}}{\text{Number of cells}} = \frac{4 \text{ mm}}{20 \text{ cells}} = 0.2 \text{ mm/cell} $$ Step 3: Convert the cell size from millimetres to micrometres. Since $1 \text{ mm} = 1000 \mu\text{m}$: $$ 0.2 \text{ mm} \times 1000 \frac{\mu\text{m}}{\text{mm}} = 200 \mu\text{m} $$ The size of one cell is $\boxed{\text{200 µm}}$. 4. State the functions of centrioles in a cell. • Centrioles are involved in the formation of spindle fibers during cell division in animal cells. • They are also involved in the formation of cilia and flagella. 5. Study the flow diagram below The diagram illustrates the process of photosynthesis, with a light stage and a dark stage. U: Water* ($\text{H}_2\text{O}$) (input for the light stage) V: Oxygen* ($\text{O}_2$) (a product of the light stage) W: ATP* (Adenosine triphosphate) (an energy carrier produced in the light stage) Send me the next one 📸