Structure of Plant cells Practice exercise 3

Describe how each of the following contributes to the effective observation of a plant cell under a light microscope: the use of a thin specimen, a clean cover slip, and proper lighting.   (3 marks)

Describe how each of the following contributes to the effective observation of a plant cell under a light microscope: the use of a thin specimen, a clean cover slip, and proper lighting.   (3 marks)

Describe how each of the following contributes to the effective observation of a plant cell under a light microscope: the use of a thin specimen, a clean cover slip, and proper lighting.   (3 marks)

Explain why iodine solution is used when preparing a slide of an onion cell for observation under a light microscope.  (2 marks)

Explain why iodine solution is used when preparing a slide of an onion cell for observation under a light microscope.  (2 marks)

Explain why iodine solution is used when preparing a slide of an onion cell for observation under a light microscope.  (2 marks)

Name four parts of a plant cell as observed under a light microscope and explain the function of each.    (4 marks)

Name four parts of a plant cell as observed under a light microscope and explain the function of each.    (4 marks)

Name four parts of a plant cell as observed under a light microscope and explain the function of each.  (4 marks)

Observe the diagram of a stained onion cell below. Label four parts that can be seen under the microscope and state the role of each in the cell.   (4 marks)

Observe the diagram of a stained onion cell below. Label four parts that can be seen under the microscope and state the role of each in the cell.   (4 marks)

Observe the diagram of a stained onion cell below. Label four parts that can be seen under the microscope and state the role of each in the cell.   (4 marks)

Observe the diagram of a stained onion cell below. Label four parts that can be seen under the microscope and state the role of each in the cell.   (4 marks)

State two plant cell structures and explain how each helps the plant cell function.  (2 marks)

State two plant cell structures and explain how each helps the plant cell function.  (2 marks)

State two plant cell structures and explain how each helps the plant cell function.  (2 marks)

While labelling a diagram of a plant cell, a learner places the chloroplast in the centre of the cell and the nucleus next to the cell wall. Explain why this placement is incorrect and how the parts are arranged in an actual plant cell.  (3 marks)

While labelling a diagram of a plant cell, a learner places the chloroplast in the centre of the cell and the nucleus next to the cell wall. Explain why this placement is incorrect and how the parts are arranged in an actual plant cell.  (3 marks)

While labelling a diagram of a plant cell, a learner places the chloroplast in the centre of the cell and the nucleus next to the cell wall. Explain why this placement is incorrect and how the parts are arranged in an actual plant cell.  (3 marks)

During a microscope observation, a student identifies the nucleus and cell wall in a plant cell but cannot find the vacuole. Explain two reasons why the vacuole might not be visible  (2 marks)

During a microscope observation, a student identifies the nucleus and cell wall in a plant cell but cannot find the vacuole. Explain two reasons why the vacuole might not be visible  (2 marks)

During a microscope observation, a student identifies the nucleus and cell wall in a plant cell but cannot find the vacuole. Explain two reasons why the vacuole might not be visible.  (2 marks)

During a science investigation, a student identifies the nucleus and vacuole in a plant cell but cannot locate the chloroplasts. Explain two reasons why chloroplasts might not be visible in their sample, and what type of plant material they should use instead.  (3 marks)

During a science investigation, a student identifies the nucleus and vacuole in a plant cell but cannot locate the chloroplasts. Explain two reasons why chloroplasts might not be visible in their sample, and what type of plant material they should use instead.  (3 marks)

During a science investigation, a student identifies the nucleus and vacuole in a plant cell but cannot locate the chloroplasts. Explain two reasons why chloroplasts might not be visible in their sample, and what type of plant material they should use instead.  (3 marks)

In an experiment, students stain plant cells with iodine but complain that no internal structures are visible. Suggest two mistakes they might have made during staining and how to correct them.    (3 marks)

In an experiment, students stain plant cells with iodine but complain that no internal structures are visible. Suggest two mistakes they might have made during staining and how to correct them.    (3 marks)

In an experiment, students stain plant cells with iodine but complain that no internal structures are visible. Suggest two mistakes they might have made during staining and how to correct them.    (3 marks)

While preparing a slide of an onion cell, a student notices that the iodine solution is spreading too much on the slide, making it hard to see the cell. What mistake might the student have made, and how can this be corrected?  (2 marks)

While preparing a slide of an onion cell, a student notices that the iodine solution is spreading too much on the slide, making it hard to see the cell. What mistake might the student have made, and how can this be corrected?  (2 marks)

While preparing a slide of an onion cell, a student notices that the iodine solution is spreading too much on the slide, making it hard to see the cell. What mistake might the student have made, and how can this be corrected?  (2 marks)