Download Name

Name: _________________________
Date: _________________________
Period: _________________________
FLOWERS TO SEEDS
1. Flowers are about _________________.
2. This means that a male _________________ and a female _________________ must unite to
produce new life.
3. The most visible and showy parts of a flower are the _________________.
4. Around the base of the petals are some green leaflike structures called _________________.
5. Reaching up from the center of the flower are several _________________, the male parts of
the flower.
6. Each stamen has two parts, the long, thin _________________ that is tipped with an
_________________.
7. Thousands of _________________ _________________ form in the anthers.
8. Inside each pollen grain is the specialized male sex cell, the _________________.
9. Right in the middle of the flower is the _________________, the female part of the flower.
10. The flattened tip of the pistil is the _________________, and the base of the pistil deep
inside the center of the flower is the _________________.
11. Inside the ovary are the _________________, the “nests” in which the specialized female sex
cells, the _________________, reside.
Pollination
12. The combined cell is said to be _________________.
13. Two sex cells meet and unite through _________________.
14. The two primary agents that plants rely on to carry the pollen from where it is produced to a
mature stigma are _________________ and _________________.
15. Plants that use wind for pollination tend to have tiny, _________________ flowers.
16. _________________ do the largest share of work to carry pollen from point A to point B.
17. The advertisement of plants to insects is the bright _________________,
_________________, _________________, and _________________, and the payoff to insects
that respond to the advertisement is sweet _________________ and nutritious
_________________.
The Honey Bee
18. The most celebrated of the pollinators is the _________________ _________________.
19. Because _________________ is deep in the center of the flower, the bee has to scramble
over and around the pollen-loaded _________________ to get at it.
20. In the process, she gets pollen stuck on her hairy _________________ and
_________________ .
21. When the bee flies off to her next stop, she usually looks for a flower of the
_________________ _________________ .
22. When she lands there, once again she will scramble over the _________________ and
_________________, leaving pollen grains on the _________________.
23. When pollen is deposited on the sticky stigma, _________________ is complete.
Flower Diversity
24. Hummingbirds have virtually no sense of smell; they are attracted to brilliant
_________________.
25. _________________ is a powerful attractant.
26. The _________________ and _________________ of petals on a flower add to its appeal to
certain pollinators.
After Pollination
27. _________________ is now directed to the development of seeds.
28. After successful pollination, _________________ begins.
29. Shortly after landing on the sticky _________________, the pollen grain performs an
astonishing feat.
30. It grows a long _________________, like a root, down the length of the
_________________ and into the _________________.
31. The _________________ travels through the pollen tube into the ovule to fertilize the
_________________.
32. After successful fertilization, the single cell _________________, and each of those cells
_________________, and on and on until the many cell develop into an _________________.
33. The parent plant supplies the resting _________________ with a package of energy-rich
food, the future _________________, and wraps the whole system in a weatherproof
_________________.
34. At the same time the fertilized _________________ is developing into a seed, the ovary that
surrounds the seed is developing into a _________________.
35. The general rule is that, if it has seeds, it is a _________________.
Composite Flowers
36. _________________ flowers have wide, flat faces that are actually hundreds or even
thousands of tiny _________________.
37. Each _________________ is a complete flower.
38. Each floret has an ovary with a single _________________, so each floret produces a single
_________________.
Thinking about Flower Reproduction
1. Many plants can be pollinated only by pollen from other plants of the same kind. How does
pollen get from one plant to another?
2. What is a pollinator and how might one be attracted to a plant?
3. Why is pollination necessary?
4. Describe how seeds develop as a result of sexual reproduction after pollination.
5. What is a fruit? Give some examples other than those mention in the reading.
6. Explain why bees pollinate flowers.