BIOA02H3 Lecture 1: Lecture 01

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16 Jan 2018

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Most diversity and species of plants are contained in angiosperm. Basic tree of life: goes back to one common ancestor. Subdivided into 3 kingdoms: bacteria and archaea make up prokaryotes. Kingdom of eukaryotes, contains life that we can see with our naked eye. Life on earth occurred within 1000 million years after earth originated, when first bacteria evolved. For 1500 mill years, earth only inhabited by prokaryotic life. Around 1500 mill to 1000 years ago, we had green algae (ancestral to plants) in the proterozoic basic tree of life of. Angiosperms and gymnosperms are the seed plants (evolved most recently) Within bryophytes, the liverworts has 6000 species, the bulk of the diversity within bryophytes is found in mosses (with 12,000 species) The evolutionary most advanced group (the hornworts have 100 species) The big bulk of vascular but non-seed plants diversity is found in ferns with 12,000 species. The big bulk of diversity is in angiosperms (flowery plants with 270,000 species)

Related Questions

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

yellowmuskrat453

1. If given a biological question, demonstrate your ability to scientifically analyze the problem2. How does the scientific method work?3. How are clinical drug tests conducted?4. What is natural selection, how does it work, and how does it compare to artificial selection?5. How did the ideas of Lamarck differ from those of Darwin?6. What evidence is there for evolution?7. Give examples of homologous/vestigial structures and atavisms8. What is the importance of the Hardy Weinberg equilibrium and how may it be violated?9. What are the effects of different forms of natural selection?10. How does one construct and read a cladogram?11. How does speciation occur?12. What are different types of reproductive isolating mechanisms?13. What are the types of14. What are major events in the evolution of life and when did they occur?15. What is the basic structure of different types of prokaryotes?16. How does this structure prevent cell lysis?17. How does the arrangement of genetic material allow for rapid reproduction in prokaryotes; how do they maintain genetic diversity?18. What are the Archaea and where are they found?19. What is the theory of endosymbiosis? What is secondary endosymbiosis?20. What are characteristics of the major groups of Protista discussed in class?21. Why is the kingdom Protista not a valid kingdom?22. How does one tell a plant from algae?23. How does the moss life cycle differ from that of other plants?24. How are ferns better adapted to life on land than mosses? How are they still tied to the water?25. What are the major groups of seed and seedless plants discussed in class and how are they different?26. What is the basic plant life cycle?27. Where do plants make sperm and eggs?28. Who are the major groups of seed plants, do any have swimming sperm?29. What benefits do seed plants have over ferns in terms of life on land30. What benefits do flowering plants have over gymnosperms?31. In what ways are angiosperms affected by coevolution with pollinators and herbivores?32. Where are the gametophytes found in seed plants?33. How does sperm get to the egg in seed plants?34. How do wind and animal pollinated flowers differ?35. How do fungi obtain their nutrients?36. In what ways do fungi interact with their environment?37. How do mushroom producing fungi reproduce?38. How do fungi benefit and otherwise affect humans?39. What are traits shared by all animals?40. What are major distinguishing traits of the phyla discussed in biology 2 lecture?Which groups are bilateral etc.41. What groups have parasites or other disease causing organisms?42. Why are arthropods so successful?43. What are traits of Chordates?44. Describe the adaptations to life on land, how do they parallel those seen in plants?45. What makes us Human?46. How is a bird adapted for flight?47. How does available surface area influence fungi, plants and animals?48. What was the significance of van Helmont

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7) According to the Red Queen hypothesis,

A) the population density of a predator depends on thepopulation density of its prey.

B) natural selection should favor the most efficientforagers.

C) prey must continually evolve means of avoiding capture toavoid extinction.

D) most predators consume a varied diet in order to meet theirnutritional requirements.

8) Which of the following is an example of crypticcoloration?

A) a brown bird that nests on the ground

B) a deer with a large, white tail

C) skunks with black and white stripes

D) snakes with black, yellow, and red bands

9) Which of the following is not a class of plant secondarycompounds?

A) terpenoids

B) phenolics

C) nitrogen-based compounds

D) alkanes

15) When an ecologist compares the diversity of differentcommunities by counting the number of species within eachcommunity, the measure of diversity being used is called

A) species evenness.

B) species diversity.

C) species richness.

D) relative abundance.

16) In a rank-abundance curve comparing two communities, thecommunity with the greater species richness is characterized bya

A) lesser length of the curve and a more gradual slope.

B) lesser length of the curve and a steeper slope.

C) greater length of the curve and a more gradual slope.

D) greater length of the curve and a steeper slope

19) The layer of a forest in which decomposition takes place andmineral nutrients are released for reuse by plants is calledthe

A) canopy.

B) understory.

C) herb layer.

D) forest floor.

20) Zonation within a community is typically the result ofdifferences in the

A) patterns of predation among species within a community.

B) rates of reproduction among species within a community.

C) patterns of competition among species within a community.

D) physical characteristics of the environment across a spatialgradient.

21) Food webs are typically arranged into trophic levelswith

A) primary producers at the bottom, herbivores in the middle,and carnivores at the top.

B) herbivores at the bottom, carnivores in the middle, andprimary producers at the top.

C) carnivores at the bottom, herbivores in the middle, andprimary producers at the top.

D) primary producers at the bottom, carnivores in the middle,and herbivores at the top.

22) When top-down control occurs within an intertidal zone alongthe rocky coastline of the Pacific Ocean, which of the followingspecies controls the abundance of other species?

A) kelp

B) mussels

C) barnacles

D) starfish

23) In coastal aquatic environments, the three majorenvironmental gradients of water that directly influence thedistribution and dynamics of communities include

A) temperature, depth, and top down regulation.

B) depth, aposematic coloring, and salinity.

C) pressure, temperature, and depth.

D) tidal action, salinity, and oxygen content.

28) The number of species within a community is usually greatestwhen

A) no disturbance occurs.

B) a low frequency of disturbance occurs.

C) an intermediate frequency of disturbance occurs.

D) a high rate of disturbance occurs

29) Succession in a community involves

A) only autotrophic species.

B) only heterotrophic species.

C) both autotrophic and heterotrophic species.

D) only detritivorous species.

32) The highest diversity of plant and animal life occurs in

A) tropical savannas.

B) tropical rain forests.

C) temperate deciduous forests.

D) boreal forests.

33) Plants that root and grow on other plants in the tropicalrain forest are called

A) phreatophytes.

B) succulents.

C) epiphytes.

D) halophytes.

34) Tropical Savannas typically occur in

A) cold areas with little rainfall in polar regions.

B) cold areas with little rainfall at high altitudes in thetropics.

C) very dry areas in the rain shadow of mountains of bothtemperate and tropical latitudes.

D) warm areas with seasonal rainfall in the tropics.

37) The vegetation of tundra is dominated by

A) broadleaf deciduous trees.

B) short ground covering plants such as sedges and heaths.

C) needle-leaf evergreen trees.

D) sclerophyllous broadleaf evergreen shrubs.

38) The part of a rocky shore in which barnacles, oysters,mussels, limpets, and brown algae are most common is called the

A) littoral or intertidal zone.

B) infralittoral or subtidal zone.

C) supralittoral or supratidal zone.

D) superlittoral or supertidal zone.

39) In comparison to rocky coasts, intertidal organisms livingon sandy or muddy beaches

A) experience greater variability in salinity.

B) experience greater variability in temperature.

C) are more likely to be attached to the substrate.

D) are more likely live burrowed and emerge with the incomingtide.

40) In salt marshes, predatory fish move in when

A) the tide is high.

B) migratory fishes are spawning.

C) the sun goes down.

D) salinity is low.

41) Intertidal mud flats in tropical regions are typicallycomposed of

A) salt marshes.

B) peatlands.

C) mangrove forests or mangals.

D) oysterbeds.

42) Mangrove swamps

A) are formed by a single species of tree adapted to variablesalinities.

B) have relatively anoxic soils.

C) occur mostly in temperate latitudes.

D) typically occur along rocky coastlines subjected to heavywave action.

43) Freshwater wetlands dominated by woody vegetation arereferred to as

A) swamps.

B) marshes.

C) mangrove forests or mangals.

D) prairie potholes.

44) The number of species of living organisms on the planet isprobably closest to

A) 100,000.

B) 1,000,000.

C) 10,000,000.

D) 100,000,000.

45) The end of the Permian period was characterized by a massextinction of

A) shallow-water marine invertebrates.

B) dinosaurs and other large reptiles.

C) small mammals.

D) large mammals.

46) The dinosaurs and many other animals became extinct at theend of the

A) Cambrian period.

B) Permian period.

C) Cretaceous period.

D) Pleistocene epoch.

47) Species richness of terrestrial plants and animals increaseswith

A) latitude.

B) the structural diversity of plant communities.

C) elevation.

D) flatter terrain.

48) In marine environments,

A) both species richness and productivity increase withlatitude.

B) species richness increases and productivity decreases withlatitude.

C) species richness decreases and productivity increases withlatitude.

D) both species richness and productivity decrease withlatitude.

49) As temperatures decreases with latitude in marineenvironments,

A) both species richness and species dominance increase.

B) species richness increases and species dominancedecreases.

C) species richness decreases but productivity increases.

D) both species richness and species dominance decrease.

50) All species eventually become extinct

A) True

B) False

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BIOA02H3 Lecture 1: Lecture 01

BIOA02H3 Full Course Notes

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