1. What challenges do both plants and animals face? Give at least two. fight each other; compete for mates; invade new territory
2. What structures allow the bramble to move forward over obstacles? backward pointing spines
3. What structure contains the next generation of plants? seeds
4. What part of the puffball does the most traveling? spores
5. Why do the earth stars open when it begins to rain? it gives them energy to propel spores into the air
6. How are dandelion seeds specialized for flight? small parachutes
7. What advantage do trees have over flowers for seed dispersal? height
8. What would happen if the sycamore seed were heavier or the wing shorter and wider? the seed would fall like a stone
9. What are the three mechanisms plants use to transport seeds away from the parent (such as the mechanism used by the sycamore)? flight; explosives; jet propulsion; water
10. How do plants use animals to transport seeds? hooks to attach to animals' fur, hooves, or feet; entice them with a reward (food)
11. How do plants bribe animals and humans to transport seeds, even forcing them to the plant's time table? flesh of fruit sweetens, changes color; fruits ripen at different times
12. How do plants announce that their seeds are ready? color of fruit changes
13. What two colors are most commonly used to by plants to advertise their fruits? red and black Why? it is easily seen by birds (eyesight similar to humans)
14. What happens to seeds that are eaten with fruit, such as those eaten by the rhinoceros horn bill? voided far from the parent plant
15. What medium works over greater distances than vision? smell
16. What will probably happen to the truvea tree if the Indian rhinoceros dies out? become extinct
17. What do the elephant's digestive juices do for the acacia seeds? kills beetle grubs
18. Describe how the ivy league toad flax moves up a high wall. it plants its seeds in cracks of a wall
19. What must happen for the protea to releases its seeds? seasonal fires
20. How does the magnolia from the ancient seed differ from the wild magnolias still found in Japan? it has seven or eight petals