27. Protists

Protist Life Cycles

Alternation of Generations

 No. Although ciliates do reproduce by binary fission, this involves one cell elongating and splitting in two. Genetic variation is not a result of binary fission. 

 No. Asexual reproduction does not generally introduce genetic variation. 

 No. Genetic variation in ciliates is the result of conjugation. 

 None of the listed responses is correct. 

 No. One of the other choices is correct. 

Review the reproductive cycle of Paramecium.

How do ciliates generate genetic variation?

Life cycle of slime mold

Angiosperm life cycle

Short Video: Flowering Plant Life Cycle

Green Algae Alternation of generations

 They all have flagella with numerous fine, hairlike projections. 

 No. This is a true statement, but there is a better choice. 

 None of the listed specific responses is correct. 

 No. At least one of the listed responses is a shared characteristic. 

 All of the listed specific responses are correct. 

Part of this answer comes from the name of the group&#151;stramenopiles.

Which characteristic is/are shared by most diatoms, golden algae, and brown algae at least at some stage of their life cycles?

Angiosperm Life Cycle

The Life Cycle of Chara, a Fresh Water Green Alga

Haploid and Diploid Dominant Life Cycles

 No. Some algae exhibit this type of life cycle. 

 is distinguished by a unicellular haploid stage and a multicellular diploid generation 

 No. This is not the life cycle in the alternation of generations. 

 consists of a diploid gametophyte stage alternating with a haploid sporophyte stage 

 No. The gametophyte is haploid, and the sporophyte is diploid. 

 is distinguished by a multicellular haploid generation and a unicellular diploid generation 

 is distinguished by haploid and diploid stages that are both multicellular 

Every sexually reproducing organism has haploid and diploid stages. What is unique about alternation of generations?

Alternation of generations __________.

 flagellated gametes that do not require water for fertilization to occur 

 No. Their gametes lack flagella and therefore require water currents to bring them together for fertilization. 

 population explosions known as "red tides" 

 No. Red algae do not exhibit the multinucleated portions seen in some of the fungi. 

 No. Not all their species are red. The color of the organism depends on what water depth it inhabits. 

 diverse life cycles, including alternation of generations 

Think about reproduction in red algae.

The red algae are characterized by __________.

Alternation of Generations (angiosperms)

In a life cycle with alternation of generations, multicellular haploid forms alternate with
a. unicellular haploid forms.
b. unicellular diploid forms.
c. multicellular haploid forms.
d. multicellular diploid forms.

Dictyostelium Introduction

Plant Reproduction in Angiosperms

Alternation of Generations Life Cycle

Alteration of Generations

What Is Asexual Reproduction | Genetics | Biology | FuseSchool

Alternation of Generations in a Protist

Animation: Angiosperm Life Cycle

Kingdom Protista - Life Cycle in Protists

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1. Introduction to Biology

2. Chemistry

3. Water

4. Biomolecules

5. Cell Components

6. The Membrane

7. Energy and Metabolism

8. Respiration

9. Photosynthesis

10. Cell Signaling

11. Cell Division

12. Meiosis

13. Mendelian Genetics

14. DNA Synthesis

15. Gene Expression

16. Regulation of Expression

17. Viruses

18. Biotechnology

19. Genomics

20. Development

21. Evolution by Natural Selection

22. Evolution of Populations

23. Speciation

24. History of Life on Earth

25. Phylogeny

26. Prokaryotes

28. Plants

29. Fungi

30. Overview of Animals

31. Invertebrates

32. Vertebrates

33. Plant Anatomy

34. Vascular Plant Transport

35. Soil

36. Plant Reproduction

37. Plant Sensation and Response

38. Animal Form and Function

39. Digestive System

40. Circulatory System

41. Immune System

42. Osmoregulation and Excretion

43. Endocrine System

44. Animal Reproduction

45. Nervous System

46. Sensory Systems

47. Muscle Systems

48. Ecology

49. Animal Behavior

50. Population Ecology

51. Community Ecology

52. Ecosystems

53. Conservation Biology

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