Paragraph: (Science-textbook/science-g4-81.txt)
Sent 1: Relying on an animal to come by is risky.
Sent 2: A flower may have to wait a long time for the right animals to come by.
Sent 3: What if one never passes close enough to the flower?
Sent 4: Hoping the wind will blow is also risky for a plant.
Sent 5: What if the wind does not blow?
Sent 6: What if the blowing pollen does not land on another flower?
Sent 7: The wind could even blow the pollen over the ocean where it is wasted.
Sent 8: Giving free nectar is costly.
Sent 9: It is not a good use of the plants energy.
Sent 10: A plant uses a lot of energy to produce nectar.
Sent 11: Some animals may just drink the nectar.
Sent 12: They may not carry off any pollen in return.
Sent 13: To improve their chances, plants evolved special traits.
Sent 14: For example, they developed ways to hide their nectar.
Sent 15: Only certain animals were able to get at the plants hidden nectar.
Sent 16: These specific animals might be more likely to visit only flowers of the same species.
Sent 17: This was also a benefit for some animals.
Sent 18: Animals also evolved special traits to get to the nectar.
Question: Why is it risky for a plant to hope the wind will blow? (false/0)
Question: What are ways of transferring pollen? (true/1)
Question: What is the purpose of hidden nectar? (false/2)
Question: What might some animals do with a plant? (true/3)
Question: Why is giving free nectar costly? (true/4)
Question: What problems could arise if a plant waits for the wind to help it? (true/5)
Question: Why is it risky for a flower to wait on an animal to come by? (false/6)
Question: What is risky for a plant with its nectar? (true/7)
Question: How do animals pose a threat to pollination? (true/8)
Question: What do some plants provide that entices animals to visit them? (true/9)
Question: How do plants protect nectar? (true/10)
Question: Was every animal able to access a plant's nectar? (false/11)
Question: To improve their chances what traits did plants evolve? (false/12)
Last updated: Mon Apr 16 04:55:33 EDT 2018
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