ANSWERS WITH DETAILED EXPLANATIONS
2025 EDITION
◉ 8) The sexual life cycle of plants is described as alternation of
generations because it alternates between
A) male plants and female plants.
B) reproductive plants and vegetative plants.
C) eggs and sperm.
D) sporophytes and gametophytes.
E) flowers and spores.. Answer: D
◉ 9) The sporophyte produces
A) spores by mitosis.
B) spores by meiosis.
C) gametes by mitosis.
D) gametes by meiosis.
E) gametes by mitosis, followed by meiosi. Answer: d
◉ 1) Spores and gametes are both haploid reproductive cells. What
is the difference between the two?
,A) Spores germinate and grow into a multicellular haploid
gametophyte, and gametes fuse to form a diploid zygote.
B) Spores fuse to form a diploid zygote that eventually becomes the
sporophyte, gametes.
C) Spores are found only in plants that reproduce asexually, and
gametes are found only in plants that reproduce sexually.
D) Gametes germinate and grow into a multicellular haploid
gametophyte, and spores carry out fertilization.. Answer: c
◉ 10) In the alternation of generations, what is formed when a
spore germinates?
A) A plant that produces spores when mature.
B) An increased number of spores.
C) A plant that meiotically produces sex cells.
D) A haploid stage called the gametophyte.
E) A haploid stage called the sporophyte.. Answer: C
◉ 13) ________ results in the production of spores in flowering plants.
A) Fertilization
B) Germination
C) Meiosis
D) Spermatogenesis
E) Mitosis. Answer: B
, ◉ 16) In flowering plants, the sperm does not have to swim to the
egg. The sperm reaches the eggs by
A) wind pollination.
B) a pollen tube.
C) burrowing through the embryo sac wall.
D) cell division within the spore case.
E) digestion of the seed coat.. Answer: B
◉ 18) A pollen grain is actually the
A) male gametophyte.
B) female gametophyte.. Answer: A
◉ Conifers do not have flowers to attract pollinators. Instead,
fertilization occurs
A) via wind pollination.
B) as the sperm and egg unite inside the woody cone.
C) when the endosperm takes the place of the male gametes.
D) when insects coated with pollen are trapped in the sticky resin.
E) when birds transfer pollen in their droppings after eating the pine
seeds.. Answer: A