
The digram shows the structure of a human heart.

(a) On the diagram label the:
(i) left atrium

(i) left atrium

Important Questions on Practice Exam Papers
The digram shows the structure of a human heart.
(a) On the diagram label the:
(ii) semilunar valve

The digram shows the structure of a human heart.
(a) On the diagram label the:
(iii) pulmonary vein.

The digram shows the structure of a human heart.
Annotate the diagram to show the direction of deoxygenated blood through the heart.

The digram shows the structure of a human heart.
Explain the difference in width in the walls of the ventricles. The photographs show parts of different plants (not to scale).

The photographs show parts of different plants (not to scale).
Determine the classification of plants shown in the pictures using the dichotomous key.
(1) No vascular tissue ................................ Bryophyta Presence of vascular tissue ............................ go to 2

The photographs show parts of different plants (not to scale).
Determine the classification of plants shown in the pictures using the dichotomous key.
(2) Spores present...................................... Filicinophyta

The photographs show parts of different plants (not to scale).
Determine the classification of plants shown in the pictures using the dichotomous key.
(3) Flowers present......................... Angiospermophyta No flowers and presence of cones........Coniferophyta

