P1 is a slide of a stained transverse section through a plant leaf. You are not expected to be familiar with this specimen. You are required to: • use the eyepiece graticule to measure the depth of the leaf and the depth of a vascular bundle at the mid-rib • use these measurements to draw a plan diagram of part of the leaf. The eyepiece graticule in the microscope can be used to measure different tissues. Select the widest part of the leaf (mid-rib) on P1, shown by Y in Fig. 2.1. [Figure 2.1]

The eyepiece lens of a microscope can be fitted with an eyepiece graticule. Which of these statements about eyepiece ...

A student was asked to use the scale bar shown to calculate the magnification of a cell on a photomicrograph. [Figure...

Which eyepiece and objective lens combination of a light microscope allows the greatest number of cells in a field of...

The contraction of striated muscle is explained by the sliding filament model.

The black pigment melanin, which contributes to hair, skin and eye colour, is produced by cells known as melanocytes.

Fig. 7.1 shows a red deer, Cervus elaphus. Red deer are herbivores that feed on a wide range of plants. [Figure 7.1] ...