Biology A (9-1) - Gateway Science Suite J247 9-1: Community level systems Topical Past Paper Questions

Mistletoe is a green plant that is often seen growing high in a tree in winter. Mistletoe can photosynthesise, but not at a very fast rate. It therefore needs to act as a parasite on the tree. (a) Put a (ring) around the term used to describe the tree in this relationship with th…

The demand for food in the world is growing. One possible solution to this is the use of aquaculture. This involves farming fish, such as salmon, in large cages in lakes or the sea as shown in the diagram. However, growing salmon in cages allows parasites on their body to spread…

Fig. 20.1 shows two types of insect called the Blandford fly and the mayfly. Blandford fly Mayfly Fig. 20.1 (a) The young of Blandford flies live in rivers. They compete with mayflies for algae. Large fish called trout are predators of mayflies and Blandford flies. Complete the p…