A	Silurian	I	Seed plants appear
B	Devonian	II	Gymnosperms dominant
C	Carboniferous	III	Invasion of land by primitive land plants
D	Jurassic	IV	first reptiles

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#Question id: 17279

#Unit 13. Methods in Biology

Which of the following is relatively more stable to heat

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#Question id: 17280

#Unit 13. Methods in Biology

During DNA isolation, phenol / chloroform extraction is performed to remove

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#Question id: 17281

#Unit 9. Diversity of Life Forms

Identify each of the following structures as haploid or diploid: 

A) sporophyte 

B) spore 

C) gametophyte 

D) zygote 

E) Sperm

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#Question id: 17282

#Unit 9. Diversity of Life Forms

Which of the following is a land plant that produces flagellated sperm and has a sporophyte-dominated life cycle? 

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#Question id: 17283

#Unit 9. Diversity of Life Forms

The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to__

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#Question id: 17284

#Unit 9. Diversity of Life Forms

Which kind of plant tissue should lack phragmoplasts?