A bird eats the fruit of a shrub and deposits the undamaged seeds away from the parent plant.
Which pair of benefits best explains the interdependence?
The bird gains mineral ions; seedlings compete more with the parent.
The bird gains food; seedlings compete less with the parent.
The bird gains pollen; seedlings receive more water from the parent.
The bird gains shelter; seedlings receive more food from the parent.
82 exam-style questions on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one has a worked solution and a mark scheme showing where the marks go.