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A plant, such as an iris, that reproduces asexually most of the time probably

A) is found in a changing environment.

B) produces offspring that move into new environments.

C) lacks the ability to make flowers.

D) forms spores.

E) has offspring that live in the same environment as the parents.

E

An oak tree is a

A) sporophyte.

B) gametophyte.

C) gamete.

D) spore.

E) zygote.

A

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.

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

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.

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.

C

13) results in the production of spores in flowering plants.

A) Fertilization

B) Germination

C) Meiosis

D) Spermatogenesis

E) Mitosis

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.

B

18) A pollen grain is actually the

A) male gametophyte.

B) female gametophyte.

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.

A

Grass flowers lack petals and sepals. Which of the following statements is TRUE?

A) These flowers are pollinated at night, so they don't benefit from showy petals or sepals.

B) They are pollinated by flies, which don't require showy, scented petals.

C) They are imperfect flowers lacking stamen or carpals.

D) They are incomplete flowers lacking one or more floral parts.

d

Flowers that make pollen, but not ovules, lack

A) petals.

B) sepals.

C) stamens.

D) carpels.

E) filaments.

D

All of these flower structures are modified leaves EXCEPT

A) petals.

B) carpels.

C) sepals.

D) stamens.

E) pollen.

e

24) An incomplete flower

A) lacks one or more of the four basic floral parts.

B) remains in the bud stage and does not bloom.

C) produces sterile seeds.

D) manufactures infertile pollen.

E) is incapable of self-fertilization.

a

A flowering plant produces pollen in the

A) stigma.

B) ovule.

C) fruit.

D) anther.

E) style.

d

are modified leaves that are often brightly colored and scented to attract pollinators.

A) Filaments

B) Anthers

C) Petals

D) Stigma

E) Sepals

c

Which of the following statements is TRUE?

A) When mature, the carpel will become the seed and the anther will become the fruit.

B) When mature, the ovules will become seeds and the ovary will develop into a fruit.

C) When mature, the stamen will become the seed and the stigma will become the fruit.

D) The filament and anther enclose the stigma and style.

E) The style, which is vase-shaped, contains the ovary, stigma, and anther.

b

Meiosis produces a , which eventually gives rise to an egg in an unfertilized seed.

A) microspore

B) pollen tube