Fig. 2.1 shows a plant called the ghost plant and a magnified diagram of its flower. It is called a ghost plant because it is often completely white in colour. Cells of the ghost plant do not contain chloroplasts. [Figure 2.1]
- (a)From the appearance of the flower, suggest how it is pollinated. Give a reason for your answer. how the flower is pollinated ................................................................................................................................. reason ...................................................................................................................................................................[2]
- (b)(i)From the information given in Fig. 2.2, name the producer.[1]
- (b)(ii)The flow of nutrients in the feeding relationship is shown by the arrow on Fig. 2.2. Suggest three nutrients that flow from the tree to the ghost plant. 1 2 3[3]
- (c)Suggest why the leaves of the ghost plant do not possess stomata or large intercellular spaces.[5]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2015). The mark or mark type is shown in brackets.
- [max 2] (a) how the flower is pollinated: insect / self;
- [max 1] (a) reason (insect): 1. stigma / carpel + enclosed ;
- [max 1] (a) reason (insect): 2. anthers / stamens + enclosed ; A not pendulous
- [max 1] (a) reason (insect): 3. anthers / stamens + small;
- [max 1] (a) reason (insect): 4. white colour may attract (insects) ;
- [max 1] (a) reason (self): 5. anthers and stigma close ;
- [max 1] (a) reason (self): 6. white / not brightly coloured + doesn't attract (insects);
- [1] (b)(i) tree;
- [3] (b)(ii) carbohydrate/sucrose/glucose/sugar; Ig water
- [3] (b)(ii) amino acids ; R protein
- [3] (b)(ii) mineral/ions/salts/nitrate ; A phosphate/potassium Ig magnesium
- [max 5] (c) 1. no chlorophyll;
- [max 5] (c) 2. no photosynthesis ; Ig chloroplasts
- [max 5] (c) 3. carbohydrates obtained from other organism / cannot make carbohydrates ;
- [max 5] (c) 4. no CO2 requirement ;
- [max 5] (c) 5. reduced need for gas diffusion / gas exchange ;
- [max 5] (c) 6. ref. reduced / no transpiration / description;
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