Plant Evolution – Biology Midterm Exam

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Plant Evolution

The key terms in this Biology course include Plant Evolution.


Alternation of generations

Plant Evolution - Biology Midterm Exam

Spores                                  

Gametophyte                  

Gametes n

Zygote 2n

Sporophyte diploid

Answer 1:

n

Answer 2:

n

Answer 3:

n

Answer 4:

2n

Answer 5:

diploid

Explanation

Spores = n (haploid)

Gametophyte = n (haploid)

Gametes n (haploid)

Zygote = 2n (diploid)

Sporophyte = 2n (diploid)

Alternation of Generations

Plant Evolution - Biology Midterm Exam

Gymnosperms (naked seed)- seed bearing vascular plants-match the terms:

You may need to look up some information online to help answer this question.

Cycadophyta

              tropical and subtropical, (looks palm like) has male and female strobili (cone-like structures)

Gentophyta

              contains genera-Ephedra (native to North America), Welwitschia (native to western Africa),  and Gnetum

Ginkgophyta

              contains a single species, distinctive leaves, native to a small part area in china- popular as ornamental

Coniferophyta

              cone-bearing plants- confers (i.e. pine trees, redwoods, spruces, ponderosa pines) most have a small male cones and large female cones, largest taxon in the Gymnosperms

Other Incorrect Match Options:

  • monocots
  • eudicots
  • dicots
Explanation

Cycadophyta = tropical and subtropical, (looks palm like) has male and female strobili (cone-like structures)

Gentophyta = contains genera-Ephedra (native to North America), Welwitschia (native to western Africa) and Gnetum

Ginkgophyta = contains a single species, distinctive leaves, native to a small part area in china- popular as ornamental

Coniferophyta = cone-bearing plants- confers (i.e. pine trees, redwoods, spruces, ponderosa pines) most have a small male cones and large female cones, largest taxon in the Gymnosperms


Advantages of  life on land for plants (select all that apply):

carbon dioxide is more readily available

water acts as a filter, altering the spectral quality of light- decreasing efficiency

sunlight is abundant

initial colonization of land- there were no predators for plants to compete with

Explanation
  • sunlight is abundant
  • initial colonization of land- there were no predators for plants to compete with
  • carbon dioxide is more readily available

Adaptations found in terrestrial plants (select all that apply):

waxy cuticle

apical meristem

gametangium that produces haploid cells

sporangium in which the spores are formed

alternation of generations

stomata

Explanation

All are Major adaptations found in terrestrial plants


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