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10 Nov 2019

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Nestor Rutherford
Nestor RutherfordLv2
31 Oct 2019
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Related questions

1. Select the true statements concerning tracheids.

Tracheids are responsible foranchoring the plant to a substrate.
Pterophytes lack tracheids but haveeuphylls.
Without tracheids colonization ofland would not have been possible.
All of the large dominant extantland plants are tracheophytes.
Tracheids allow for efficienttransport of water over longer distances.

2. Plants lacking well-developed conducting systems such asmosses, liverworts, and hornworts have been called

sporophytes.
bryophytes.
gymnosperms.
gametophytes.

angiosperms.

3.Select the true statements concerning gametophytes andsporophytes.

Both produce gametes.
Sporophytes are alwaysnutritionally dependent on the gametophytes.
Across all plant speciesgametophytes tend to remain small.
Only sporophytes produce eggs.

Antheridia are located on the gametophyte.

4. A waxy cuticle helps prevents desiccation. What is the costof this adaptation?

Slower H2Otransport
Reduced gas permeability
Lowered light absorption
Increased exposure to damaging UVradiation

Increased susceptibility to pathogenic infection

5.Select the best answer to complete the following statement.Stomata are openings used by plants for the passage of

carbon dioxide, oxygen, and watervapor.
only carbon dioxide and spores orgametes.
only carbon dioxide and watervapor.
only carbon dioxide andpollen.

only oxygen and carbon dioxide.

6.One of the main distinctions between charophytes and landplants is the possession of a cuticle. Why do modern charophyteslack a cuticle?

Their tough seed coats negate theneed for a cuticle.
Cuticles aren't necessary whenliving in water.
Modern Charophytes make up for theabsence of a cuticle by have large numbers of stomata.

Charophytes have a haplodiplontic life cycle.

7.Select the following plant adaptations for the terrestrialenvironment that are correctly listed by their function.

Stomata allow for gas exchangebetween the plant and the atmosphere.
Tracheids protect againstdesiccation.
Stomata transport water aroundplant body.

Tracheids transport water and minerals around the plantbody.

8.What would be the simplest way for a non-botanist to confirmthat the fern is not a small palm?

Height, all ferns are verysmall
Lack of roots, palms have roots butferns do not
Leaf shape, only ferns havedissected leaves

Dots on the underside of the leaf, only ferns have sporangiaunder their fronds

9.Select the true statements relating to the colonization ofland by plants.

Desiccation is a much more commonproblem in terrestrial environments.
Cuticle layers reduce gasexchange.
Xylem tissue, seeds and stomata arefound on both plants and charophytes.

Without trachids land plant would not have been to able to growmore than just a meter or so tall.

10.Survival on land for organisms is difficult because of theproblem of

spore germination.
coevolution.
desiccation.
pollination.

syngamy.

11. Well-developed vascular systems are absent in all of thefollowing except

mosses.
Charophytes.
hornworts.
liverworts.

Pterophytes.

12. Bryophytes, like ferns and certain other tracheophyteplants, require

soil to reproduce sexually.
water to reproduce sexually.
sunlight to reproducesexually.
air to reproduce sexually.

shade to reproduce sexually.

13.Plant success on the terrestrial landscape is linked to theevolution of all of the following except

gas-filled air spaces.
stems.
specialized reproductivefeatures.
specialized roots.
increased area for photosynthesisin the leaves.

Question 1

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

Question 1 options:

fruit.

vascular tissue.

the seed.

protection of the embryo.

Question 2

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

Question 2 options:

transition from a dominant gametophyte generation to a dominantsporophyte generation

transition from a dominant sporophyte generation to a dominantgametophyte generation

Question 3

Which structure(s) allow the sporophyte of vascular plants to beprotected 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 fromdrying out

Question 4

Why are the bryophytes called nonvascular plants?

Question 4 options:

because they are specialized for transporting water and organicnutrients

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 totheir 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 dryingout?

Question 7 options:

the archegonium

the antheridium

the sporangium

the stalk

Question 8

Cooksonia were the first __________ plants; they hadwind-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 inearly 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 thelycophytes

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

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

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

Question 12

The fern life cycle

Question 12 options:

all of these choices accurately describe the fern lifecycle.

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. Theyare 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 whichhas two parts: the anther and the filament. The __________ parts ofa 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 involvestwo sperm, one of which __________, while the other __________.

Question 17 options:

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

is a mature male gametophyte; is an immature malegametophyte

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

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

Question 18

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

Question 18 options:

True

False

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 theirlife cycle. The chytrids do not have flagella.

Land fungi are nonmotile and do not have flagella at any stageof their life cycle. The chytrids have flagellated spores andgametes.

Land fungi are nonmotile and only have flagellated spores. Thechytrids have flagellated spores and gametes.

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

Question 20

The vast majority of described species of fungi are __________fungi, which include unicellular __________, which reproducesexually once their food supply runs out. When yeast ferment, theyproduce ethanol and carbon dioxide.

Question 20 options:

zygospore; black bread molds

club; mushroom

sac; yeast

mutualistic; lichen

Which of the following was one of the earliest changes thatcontributed to the success of plants transitioning from aquatic toterrestrial ecosystems?
a. The ingestion of photosynthetic bacteria, enabling plants tophotosynthesize
b. The development of vessels to transport water
c. The development of roots to obtain nutrients and water fromsoil
d. Spores or zygotes encased in a tough coat to resist dryingout
e. The development of flowers to attractpollinator

Is it B or D? I would assume D is the seed of a gymnosperm.According to the info below, that came after the evolution ofvessels to transport water.


Please explain your answer


http://www.clas.ufl.edu/users/pciesiel/gly3150/plant.html


  • The oldest fossils reveal evolution of non-vascular plants bythe middle to late Ordovician Period (~450-440 m.y.a.) on the basisof fossil spores.
  • These first non-vascular, "amphibious" plants, were limitedprimarily to lowland, wet areas, of temperate to tropicallatitudes. Still most land areas were barren.
  • By some 420 m.y.a., seedless vascular plants evolved which werebigger and more diverse than their ancestors. These seedlessvascular plants required water for sperm to reach the eggs and werestill limited in their distribution to wet climates. These seedlessplants grew to tree size, reaching 10 or more meters by the lateDevonian (~370 m.y.a.). Lowland swampy environments had abundantseedless plants.
  • After the 1st land plants evolved (approximately 450 m.y.a.)they underwent rapid expansion and radiation with great forests byMiddle DevonianPeriod. (385 m.y.a.). Although these forests were limited in theirextent, vast quantities of organic material were deposited andpreserved in swampy environments. Through time and burial, thisorganic material was converted to coal, forming the firstsignificant coal deposits of Earth history.
  • At a similar time (late Devonian, ~375-360 m.y.a.), seedbearing gymnosperm plants (non-flowering) evolved. The developmentof the seed allowed plants to proliferate and spread to drier areasof continents. Gymnosperms became the dominant plant type between~290 to 145 m.y.a. and are still common today.
  • During the final days of the dinosaurs (Cretaceous), the finalchapter of plant evolution began. This was the evolution offlowering plants (angiosperms). During the Cretaceous Period,angiosperms began overcoming non-flowering plants as the dominantland plants. Since this time they have become the dominant landplants.

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