biology 1407 exam 3 Questions and Answers

biology 1407 exam 3 Questions and Answers

Question 1.
filament
Correct Answer: stalk that holds up pollen-producing sac


Question 2.
coenocytic
Correct Answer: hyphae lack septa so they are one mass of cytoplasm which
contains hundreds or thousands of nuclei


Question 3.
pollination
Correct Answer: transfer of pollen to the part of a seed plant that contains the
ovules


Question 4.
3 phylum of nonvascular plants
Correct Answer: -hepatophyta -bryophyta -anthocerophyta


Question 5.
phylum ascomycota
Correct Answer: -produce spores (ascospores) in saclike asci during sexual
reproduction -develop fruiting bodies called ascocarps


Question 6.
cortex
Correct Answer: ground tissue outside the vascular bundles


Question 7.
phylum bryophyta
Correct Answer: mosses -possess stomata for gas exchnge -form peat


Question 8.
First seed appeared...
Correct Answer: 360 million


Question 9.
integument
Correct Answer: thin later of sprophyte tissue, surrounds megaspores for
protection


Question 10.
magnoliids
Correct Answer: -magnolias, laurels, black pepper, cinnamon, and avacados



Page 1

,Question 11.
sporangia
Correct Answer: multicellular organs that contain spores walled with
sporopollenin to prevent drying


Question 12.
periderm
Correct Answer: replaces epidermis in old stems and roots


Question 13.
roots supply..
Correct Answer: water and soil nutrients to shoots


Question 14.
stigma
Correct Answer: sticky tip of carpel that receives pollen


Question 15.
periderm
Correct Answer: each layer of cork and the cork cambium that produced it


Question 16.
phylum basidiomycota
Correct Answer: -only place where mushroom exsist -destructive plant parasites


Question 17.
epidermis
Correct Answer: composed of tightly-packed cells covered by a waxy cuticle


Question 18.
dikarya
Correct Answer: -two different haploid nuclei coexsist and independently divide
within each cell of teh septate hyphae --dikaryon or dikaryotic


Question 19.
root cap
Correct Answer: protects delicate apical meristem from damage as it pushes
through soil


Question 20.
ground tissue system
Correct Answer: tissues that are neither dermal nor vascular, everything else
not in the first two systems


Question 21.
megaspore


Page 2

, Correct Answer: produced in megaspotangium on a megasporophyll, develops
into female gametophyte


Question 22.
sapwood
Correct Answer: more recent layers still transport


Question 23.
fruits
Correct Answer: mature ovary and other portions of plant surrounding seeds


Question 24.
taproots
Correct Answer: in most gymnosperm and eudicots -one main vertical root and
numerous lateral roots


Question 25.
Microsporidia
Correct Answer: -unicellular parasites among smallest eukaryotes known -lack
mitochondria -obligate parasite


Question 26.
phloem
Correct Answer: cells specialized to move sugar, amino acids, and other organic
products


Question 27.
Karyogamy
Correct Answer: nuclei from two parent mycelia fuse, forming a diploid cell


Question 28.
ectomycorrihizal fungi
Correct Answer: form sheaths of hyphae over surface of a root, grow into
extracellular spaces of root cortex


Question 29.
archegonium
Correct Answer: female gametangium -multicellular structure that produces
eggs in non vascular land plants, ferns, gymnosperms -haploid eggs made by
haploid structure


Question 30.
mesophyll
Correct Answer: -packed with chlorophyll -main site of photosynthesis


Question 31.
strobili

Page 3