1. Science
  2. Biology
  3. question 1 the key innovation that allowed for plant survival...

Question: question 1 the key innovation that allowed for plant survival...

Question details

Question 1

The key innovation that allowed for plant survival on land, seen in the first land plants and all others after, but not in the charophytes, is

Question 1 options:


vascular tissue.

the seed.

protection of the embryo.

Question 2

Which dramatic change in the alternation-of-generations life cycle led to the protection of all phases of the life cycle and the formation of seeds?

Question 2 options:

transition from a dominant gametophyte generation to a dominant sporophyte generation

transition from a dominant sporophyte generation to a dominant gametophyte generation

Question 3

Which structure(s) allow the sporophyte of vascular plants to be protected against drying out?

Question 3 options:

the waxy covering of leaves, called the cuticle

small openings in the leaves, called stomata

guard cells that surround each stoma

all of these structures protect the dominant sporophyte from drying out

Question 4

Why are the bryophytes called nonvascular plants?

Question 4 options:

because they are specialized for transporting water and organic nutrients

because their roots, stems, and leaves lack vascular tissue

because they protect their embryo

because they produce wind-blown spores

Question 5

Which generation is dominant in the bryophytes?

Question 5 options:

the generations are equally dominant

the sporophyte

the gametophyte

there is no sporophyte generation in bryophytes

Question 6

Which of the bryophytes are typically low-lying, due mostly to their need for moisture and lack of vascular tissue?

Question 6 options:

the mosses

the liverworts

the hornworts

all of the bryophytes are low-lying

Question 7

Which structure of the moss protects the embryo from drying out?

Question 7 options:

the archegonium

the antheridium

the sporangium

the stalk

Question 8

Cooksonia were the first __________ plants; they had wind-blown spores, __________, leaves, and roots.

Question 8 options:

nonvascular; branches

vascular; seeds

nonvascular; seeds

vascular; branches

Question 9

The roots of today's lycophytes are much like __________ were in early vascular plants; the vascular tissue is __________.

Question 9 options:

roots; centrally placed

stems; centrally placed

leaves; only found at the perimeter

branches; only found at the perimeter

Question 10

Pteridophytes, or ferns and their allies, are __________ vascular plants with __________.

Question 10 options:

seed-producing; microphylls

seedless; microphylls

seedless; megaphylls

seed-producing; megaphylls

Question 11

Microphylls __________. Megaphylls__________.

Question 11 options:

are found in all vascular plants; are only found in the lycophytes

are broad leaves with a single strand of vascular tissue; are narrow and have several strands vascular tissue

are broad leaves with several strands of vascular tissue; are narrow and have a single strand of vascular tissue

are narrow and have a single strand of vascular tissue; are broad leaves with several strands of vascular tissue

Question 12

The fern life cycle

Question 12 options:

all of these choices accurately describe the fern life cycle.

is dependent on external water.

relies on the wind to disperse the spores.

produces a gametophyte that lacks vascular tissue.

Question 13

Seed plants use meiosis to produce

Question 13 options:

spores and pollen.

seeds and fruit.

pollen and seeds.

microspores and megaspores.

Question 14

In seed plants, a microspore develops into

Question 14 options:

an egg.

a pollen grain.

a sporophyte.

All of these answers correctly complete this sentence.

Question 15

Within the angiosperms, or ___________, two groups exist. They are named for their __________.

Question 15 options:

vascular plants; number of cotyledons, or seed coats

nonvascular plants; leaf type

flowering plants; number of cotyledons, or seed coats

fungi; leaf type

Question 16

The __________ parts of a flower are the stamens, each of which has two parts: the anther and the filament. The __________ parts of a flower are the carpel, which has three major regions: the stigma, the style, and the __________.

Question 16 options:

female; male; ovary

male; female; sepals

female; male; sepals

male; female; ovary

Question 17

Double fertilization during the angiosperm life cycle involves two sperm, one of which __________, while the other __________.

Question 17 options:

fertilizes the egg to form a zygote; produces the endosperm nucleus, which will develop into food for the developing plant

is a mature male gametophyte; is an immature male gametophyte

lands on the carpel of the plant; is usually blown away in the wind

develops into the seed; develops into the fruit that surrounds the seeds

Question 18

The bodies of most fungi are made up of a network of filaments called hyphae.

Question 18 options:



Question 19

What is the difference between land fungi and the chytrids?

Question 19 options:

Land fungi are motile and have flagella at all stages of their life cycle. The chytrids do not have flagella.

Land fungi are nonmotile and do not have flagella at any stage of their life cycle. The chytrids have flagellated spores and gametes.

Land fungi are nonmotile and only have flagellated spores. The chytrids have flagellated spores and gametes.

Both are motile for part of their life cycle. Land fungi are motile as gametes. Chytrids are motile as spores.

Question 20

The vast majority of described species of fungi are __________ fungi, which include unicellular __________, which reproduce sexually once their food supply runs out. When yeast ferment, they produce ethanol and carbon dioxide.

Question 20 options:

zygospore; black bread molds

club; mushroom

sac; yeast

mutualistic; lichen

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution