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3 Cards in this Set
- Front
- Back
For each height identify the distance traveled by the greatest number of seeds. A) (i) height=0.54.____ (ii) height=10.8m____
B) State the effect of height on seed dispersal ________________ C) Suggest two reasons for the effect of the drop height on the distance travelled by the seeds. _________________________________
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A) (i) 60 to 79 (ii) 0-2.9 B)the greater the height from which the seed fell, the further it travelled from the parent plant C) at the greater height; seed can catch the wind to travel further At a lower height; seed can fall straight down |
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D) identify the grass species which produces the most seeds in this area. E) identify the grass species which produces the most seeds in june. F) compare seed production for all species relative to the timing of their release G) suggest two benefits for these plants in the timing of seed release |
D) agrostis stolonifera E) poa trivalis F) poa produces seeds earliest in summer, june. While holcus produces most speed in July. G) late in the year to allow seeds to germinate over winter/ better germination conditions. Better dispersal condition / more wind/ animals for dispersal |
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H) compare tropical to temperate fruits in relation to the mean value for lipid, carbohydrate, and protein content. (i) explain which fruit would have the highest energy content (J) suggest one advantage and one disadvantage of dispersal of seeds by animals. |
H)tropical fruits have higher lipid content than temperature fruits. Temperature fruits (80%) have greater carbohydrates content than tropical fruits (55%) I) mistletoe; high proportion of lipid and carbohydrate J) advantage - digestion cracks seed coat for better germination Disadvantage - buried to deep |
