For a named fruit or seed, describe how it is adapted for animal dispersal.
- (a)For a named fruit or seed, describe how it is adapted for animal dispersal.[4]
- (b)(i)A student planted seeds from different types of plant in the same area of soil. Suggest why some of the seeds did not germinate.[2]
- (b)(ii)Explain why several of the seedlings were unable to survive after a few weeks.[4]
Mark scheme
Marking points from the official mark scheme (May/June 2015). The mark or mark type is shown in brackets.
- [max 4] (a) 1. name of fruit or seed ; must fit the description if one is given
- [max 4] (a) 2. adaptation that brings animal and plant into contact ; e.g. taste, colour, hooks, etc.
- [max 4] (a) 3. how fruit or seed as carried away ; e.g. internally, in intestine, eaten, attached to fur
- [max 4] (a) 4. how fruit or seed is discarded by animal ; e.g. defaecation, scratched off / falls off/spat out
- [max 4] (a) 5. ref to distance from parent plant/another location ;
- [max 2] (b)(i) 1. seeds not viable/dormant/AW ;
- [max 2] (b)(i) 2. temperature not suitable ;
- [max 2] (b)(i) 3. (amount of) water ;
- [max 2] (b)(i) 4. some of the seeds may require light ;
- [max 2] (b)(i) 5. pH ;
- [max 4] (b)(ii) 1. ref. to competition ; A overcrowding
- [max 4] (b)(ii) 2. accept two from (for) light/nutrients/water ;; Ig refs to too much Ig CO2 and O2
- [max 4] (b)(ii) 4. ref. unsuitable temperature/pH;
- [max 4] (b)(ii) 5. diseases ;
- [max 4] (b)(ii) 6. eaten (by herbivores/insects/pests)/damage by animals ;
- [max 4] (b)(ii) 7. toxins in soil;
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