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a. a gamete becomes a gametophyte.b. a spore becomes a sporophyte.c. both sporophyte and gametophyte produce spores.d. only a sporophyte produces spores.e. Both a and b are correct.
The flower part that contains ovules is the
a. carpel. b. stamen. c. sepal. d. petal.
The megaspore and the microspore mother cells
a. both produce pollen grains.b. both divide meiotically.c. both divide mitotically.d. produce pollen grains and embryo sacs, respectively.e. All of these are correct.
A pollen grain is
a. a 3n structure.b. a diploid structure.c. first a diploid and then a haploid structure.d. first a haploid and then a diploid structure.e. the male gametophyte.
a. are colorful.b. are open throughout the day.c. are strongly scented.d. have little scent.e. Both b and c are correct.
Which of these pairs is incorrectly matched?
a. polar nuclei—plumuleb. egg and sperm—zygotec. ovule—seedd. ovary—fruite. stigma—carpel
Heart, torpedo, and globular refer to
a. embryo development.b. sperm development.c. female gametophyte development.d. seed development.e. Both b and d are correct.
A seed contains
a. a seed coat. b. an embryo. c. stored foodd. cotyledon(s).e. All of these are correct.
a. nourish embryo development.b. help with seed dispersal.c. signal gametophyte maturity.d. attract pollinators.e. stay where they are produced.
Which of the following is a simple, dry, and dehiscent fruit?a. apple b. tomato c. walnutd. pineapplee. legume pod
Fruit dispersal can be accomplished by
a. seeds. b. embryos. c. pollen.d. clones.e. ovules.
Asexual reproduction producesa. seeds. b. embryos. c. pollen.d. clones.e. ovules.
Plant tissue culture takes advantage of
a. a difference in flower structure.b. sexual reproduction.c. gravitropism.d. phototropism.e. totipotency.
Cell suspension culture is used to
a. extract chemicals. b. clone vegetative organs. c. produce pollen.d. increase genetic diversity.