light, but they are exposed to the high winds that lash the canopy during tropical storms. Emergents are the favourite nest sites of jungle eagles such as the harpy eagle of South America. Canopy Suspended 40m above the ground is the canopy - a belt of tree crowns supported by enormous rainforest tree trunks. This is the most productive and diverse habitat on Earth - perhaps 40% of the world's species spend their lives among its branches. The canopy's function is to photosynthesise. Canopy trees arrange their leaves to soak up as much of the sunlight as possible and supply them with a continuous stream of water and nutrients from the soil far below, so that the process is uninterrupted from dawn to dusk. 1.2. Describe these features Light gap A common event in the tropical rainforest is the fall of an emergent tree, usually during a tropical thunderstorm. In fact, it is estimated that tree turnover rates in some rainforests are every 80-135 years
8 only the yellow number (33) deviates from the expected / 28 is half 56; 9 chi squared test could be used; 10 AVP; max 3 (d) credit ora here A chloroplast as alternative to chlorophyll yellow seedlings have, no / very little, chlorophyll; cannot photosynthesise; die when, energy reserve / carbohydrate (accept food), in seed is exhausted; dark green grow more because they have more chlorophyll (than the yellow-green); so dark green have more, photosynthetic products / named product; ref to competition between the seedlings; ref to, selection / selective advantage; max 3
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