Sexual Reproduction in Plants Worksheet from Chaiken of Biology

1. The male organ of the flower is the _______________ and the female organ is the ______________.

2. The three parts of the pistil are the _______________, ________________ and ______________.

3. What part of the stamen produces pollen? _______________

4. The accessory organs of the flower are the _______________ and _______________.

5. A flower having only pistils is a _______________ flower.

6. In pollination, a pollen grain is transferred to the _______________ of a pistil.

7. The sperm nuclei develop within the _______________.

8. The egg nucleus develops within the embryo sac that is found in the ______________.

9. The opening in the ovule wall is the _______________.

10. A seed is a ripened _______________.

11. A fruit is a ripened _______________.

12. The part of the embryo which develops into the roots is the _______________.

13. The part of the embryo which develops into the leaves is the _______________.

14. The process in which a seed starts to grow is called _______________.

15. Before green leaves are produced, the seedling is supplied with food by the _______________.

Base your answers to questions 16 through 20 on the diagram below.

16. Which two structures produce cells that carry on the process of meiosis?a) 1 and 2 b) 2 and 5 c) 6 and 7 d) 4 and 6

17. Which structure contains a female gamete? a) 1 b) 2 c) 6 d) 4

18. Which structure may develop into a seed?a) 1 b) 6 c) 7 d) 4

19. On which structure does a pollen grain normally begin to germinate? a) 1 b) 7 c) 3 d) 4

20. Which structure may develop into a fruit?

a) 1 b) 5 c) 3 d) 4

21. The male reproductive organ of a flowering plant is the a) pistil b) ovary c) stigma d) stamen

22. Which structure includes the other three? a) stigma b) pistil c) ovary d) ovule

23. In a flowering plant, the process of meiosis occurs in the a) ovules of the flowers b) cells of the root tipsc) cells of the cambium d) developing plant embryos

24. In which structure would you be most likely to find monoploid nuclei? a) yolk of a chicken egg b) seed coat of a bean seedc) ovule of a bean plant d) wall of a rabbit uterus

25. Except for male and female gametes, the cells in a geranium plant are generally a) monoploid b) diploid c) triploid d) polyploid

26. Pollen tubes serve as passageways for a) pollen grains b) sperm nuclei c) ovules d) egg nuclei

27. If a plant has large colorful flowers, it is probably a) wind pollinated b) insect pollinated c) self-pollinated d) water pollinated

28. The stamen is to the sperm nucleus as the pistil is to the a) stigma b) ovary c) embryo sac d) egg nucleus

29. Which represents an adaptation in higher plants for reproduction in a dry land

environment? a) production of gametes with flagellab) protection of the male gametes inside pollen grains

c) evolution of a placenta and umbilical cordd) development of an embryonic membrane known as the amnion

30. Self-pollination can be prevented by removing the flower’s a) anthers b) petals c) sepals d) epicotyls

31. In flowering plants, which represents the order of events for sexual reproduction?a) fertilization, pollination, growth of pollen tube, formation of pollenb) formation of pollen, pollination, growth of pollen tube, fertilizationc) growth of pollen tube, formation of pollen, pollination, fertilizationd) growth of pollen tube, formation of pollen, fertilization, pollination

32. The monoploid egg nucleus in flowering plants is produced in the a) ovary b) filament c) stigma d) anther

33. Germinating pollen grains of a plant containa) male gametes b) female gametes c) zygotes d) ovules

34. In flowering plants, fertilization takes place in thea) pollen tube b) stigma c) pollen grain d) ovule

35. A pollen grain does not normally germinate untila) a zygote is formed b) cleavage has occurredc) pollination has occurred d) a diploid nucleus is formed

Base your answers to questions 36 through 39 on the diagram below of the internal structure of a bean seed.

36. Which part would most probably turn blue-black if treated with iodine solution?a) A b) B c) C d) D

37. Which part of the seed is known as the epicotyl?a) A b) B c) C d) D

38. Which part of the seed develops into the lower part of the stem and roots?a) A b) B c) C d) D

39. Bean seeds of this type do not ordinarily germinate in seed packets because they lacka) water b) light c) chlorophyll d) food

40. The ripened ovary of a jewelweed plant pops open when it is touched. This is an example of adaptation fora) protection b) seed dispersal c) self-pollination d) cross-pollination

41. Which three conditions are necessary for most plant seeds to germinate?a) light, proper temperature, fertile soilb) oxygen, carbon dioxide, proper temperaturec) fertile soil, oxygen, lightd) moisture, proper temperature, oxygen

42. Which structure in seeds has a function similar to that of the yolk in animal eggs?a) epicotyl b) cotyledon c) hypocotyl d) ovule

43. The cotyledon of a developing bean plant is most similar in function to thea) yolk of a robin’s egg b) shell of a robin’s eggc) uterus in a cat d) umbilical cord in a cat

44. Which process is not involved in the development of an acorn into a mature oak tree?a) mitosis b) differentiation of cellsc) meiosis d) growth in size of cells

45. In a developing plant embryo, the function of meristem tissue is toa) transport nutrients to the leaves b) produce new cellsc) make food for the plant d) absorb minerals and water

46. The upper portion of the stem of a bean seedling was produced from thea) epicotyl b) hypocotyl c) seed coat d) cotyledon

47. The process in which dormant seeds develop into new plants when conditions are favorable is known asa) pollination b) germinationc) spontaneous generation d) differentiation