Exam Prep nan Meiosis And Alternation Of Generation Ch.12

Stern's Introductory Plant Biology, 14e (Bidlack)

Chapter 12 Meiosis and Alternation of Generation

1) Which of the following is NOT a part of sexual reproduction?

A) zygote

B) meiosis

C) mitosis

D) vegetative spores

E) fusion of egg and sperm

2) Which of the following statements about mitosis is NOT true?

A) Mitosis can result in the production of cells for sexual reproduction.

B) Mitosis can produce gametes.

C) Mitosis can result in asexual reproduction.

D) Mitosis can only lead to growth and development of the individual.

E) Mitosis can produce genetic mutations.

3) In flowering plants, sexual reproduction leads to the production of ________, the offspring for the next generation.

A) genetically identical plants

B) seed

C) flowers

D) bulbs and corms

E) new shoots

4) Two chromosomes that are morphologically similar, but potentially carry different versions of each gene are referred to as ________.

A) chromatids

B) centromeres

C) homologues

D) spindle fiber elements

E) gene pairs

5) In which phase of meiosis does crossing-over occur?

A) prophase I

B) prophase II

C) metaphase I

D) metaphase II

E) anaphase II

6) In meiosis

A) spindles are formed during the second division of the process only.

B) an interphase cell with 8 chromosomes ends up as 4 cells, each with 8 chromosomes.

C) a whole chromosome from each pair migrates toward a pole in metaphase II.

D) the chromosomes become shorter and thicker in prophase I.

E) the chromosome number remains the same.

7) In meiosis

A) the four (4) cells produced are identical to one another in all respects

B) cells produced by meiosis always function as gametes.

C) the process doubles the chromosome number of the plant.

D) only the first division resembles mitosis.

E) the process allows for a contribution of genes from both parents.

8) In meiosis, a doubling of the amount of DNA in each chromosome occurs in

A) interphase.

B) prophase I.

C) prophase II.

D) telophase I.

E) telophase II.

9) In meiosis, a spindle first becomes conspicuous and complete in

A) prophase I.

B) anaphase I.

C) metaphase I.

D) telophase I.

E) prophase II.

10) Chiasmata appear in

A) prophase I.

B) prophase II.

C) metaphase I.

D) metaphase II.

E) anaphase I.

11) Spindle fibers begin to form and nucleoli disappear by the end of

A) prophase I.

B) metaphase I.

C) anaphase I.

D) telophase I.

E) metaphase II.

12) One difference between meiosis and mitosis is that in meiosis

A) the chromosomal number is increased.

B) two cells are produced.

C) homologous chromosomes pair.

D) there are three sequential nuclear divisions.

E) six identical cells result.

13) In which stage of meiosis do homologous chromosome pairs separate?

A) prophase II

B) telophase I

C) anaphase I

D) anaphase II

E) metaphase II

14) Exchange of corresponding segments of chromatids  of homologous chromosomes occurs in a process called

A) homologous pairing.

B) cytokinesis.

C) crossing-over.

D) centromere division.

E) backcrossing.

15) At the end of Meiosis I, the total number of chromosomes in each daughter cell is ________.

A) the same as the mother cell

B) doubled (2x the mother cell)

C) four times the number of the mother cell

D) reduced by ½ from the number of the mother cell

E) None of these

16) In which phase of meiosis do the chromosomes separate at their centromeres, with chromatids migrating to opposite poles?

A) prophase I

B) prophase II

C) anaphase I

D) anaphase II

E) telophase II

17) Chromatids are once more called chromosomes in

A) interphase.

B) telophase II.

C) telophase I.

D) anaphase I.

E) metaphase II.

18) In which of the division II (equational division) phases of meiosis may two spindles become fully developed at right angles to the ones that had been formed during division I?

A) prophase II

B) metaphase II

C) anaphase II

D) telophase II

E) None of these answers are correct.

19) In meiosis, centromeres divide separating chromatids at the beginning of

A) metaphase I.

B) telophase II.

C) prophase II.

D) anaphase II.

E) telophase I.

20) Which of the following statements pertaining to sexual reproduction is true?

A) The first cell of a sporophyte generation is normally a gamete.

B) The change from a gametophyte generation to a sporophyte generation occurs immediately after meiosis.

C) The offspring are nearly always identical with the parents.

D) The first cell of a gametophyte generation is normally a spore.

E) Asexual cells fuse in pairs.

21) The spindle (spindle fibers) 

A) function during mitosis to pull sister chromatids to opposite poles.

B) is composed of microtubules.

C) functions during meiosis I  to pull the members of homologous pairs to opposite poles.

D) functions during meiosis II to pull the sister chromatids to opposite poles.

E) Consists of microtubules and functions in all of the ways listed in the other answer choices.

22) Which of the following pairs of cells do NOT have identical chromosome numbers in a given species of plant?

A) egg and sperm

B) spore mother cell and zygote

C) spore and gamete

D) sperm and spore

E) spore and zygote

23) In the life cycle of sexually reproducing plants, the diploid body is commonly referred to as the

A) gametophyte.

B) egg or sperm.

C) meiocyte.

D) syngamy.

E) sporophyte.

24) Diploid organisms have how many sets of chromosomes?

A) 1

B) 2

C) 3

D) 4

E) 5

25) The haploid number of chromosomes of a plant is 20. The number of chromosomes in root, stem, and leaf cells would be

A) 10.

B) 20.

C) 30.

D) 40.

E) 60.

26) Sporophytes produce ________ by the process of meiosis.

A) gametes

B) spores

C) vegetative cells

D) egg cells only

E) sperm cells

27) The change from a ________ occurs as a result of meiosis.

A) zygote to a sporophyte

B) gametophyte to a sporophyte

C) sporophyte to gametophyte

D) gametophyte to gamete

E) gamete to zygote

28) ________ is common to all organisms that reproduce sexually.

A) Meiosis

B) Formation of haploid spores

C) Formation of haploid gametes directly from meiosis

D) Formation of a gametophyte generation

E) All of these are common to all sexually reproducing organisms.

29) Haploid cells have how many sets of chromosomes?

A) ½

B) 1

C) 2

D) more than 3

E) variable

30) Polyploid plants have ________ sets of chromosomes.

A) ½

B) 1

C) 2

D) 3 or more

E) variable

31) The cells of a sporophyte are diploid.

32) The sex organs in which gametes are produced are formed on gametophytes.

33) A plant that reproduces sexually cannot also reproduce asexually.

34) Chiasmata occur during anaphase I.

35) New cell walls are formed between the four groups of chromosomes during anaphase I.

36) Syngamy and fertilization are alternate terms for the same thing.

37) Spore mother cells give rise to gametes through meiosis.

38) Chromosomes line up along equators in both metaphase I and metaphase II.

39) The nuclear envelope disintegrates by the end of prophase I.

40) Crossing over during meiosis causes greater reshuffling of genes than just meiosis without crossing over.

41) A chiasma is not produced during mitosis.

42) A homologous chromosome pair has a total of two chromatids.

43) Multicellular forms are found in both phases of an alternation of generation life cycle.

44) Any cell of a gametophyte generation is diploid.

45) Fertilization involves fusion of spores.

46) Both meiosis and fertilization contribute to the genetic variability of the offspring.