All of the following are characteristics of angiosperms EXCEPT
- coevolution with animal pollinators
- double internal fertilization
- free-living gametophytes
- pistils
- fruit
Along with the seed, the seed plants have evolved several additional adaptations to the land environment. Which one of the following is NOT such an adaptation?
- Flagellated gametes are not required for seed formation.
- The female gametophyte is protected from desiccation by the surrounding tissues of the sporophyte.
- The see and/or associated structures serve as a means of dispersal.
- Seed format6ion introduces a new type of genetic recombination.
- The seed contains nutrients for the enclosed embryo.
Plants with a dominant sporophyte are successful on land because
- having no stomata, they lose less water.
- They all disperse by means of seeds.
- Diploid plants are protected from the effects of mutation.
- Their gametophytes are all parasitic on the sporophytes.
- Eggs and sperm need not be produced.
You are given an organism to identify. It has a fruiting body that contains eight haploid spores line up in a row. What king of a fungus is it most likely to be?
- zygomycete
- ascomycete
- deuteromycete
- lichen
- basidiomycete
The sporangia of bread molds are
- asexual structures that produce haploid spores
- asexual structures that produce diploid spores
- sexual structures that produce haploid spores
- sexual structures that produce diploid spores
- vegetative structures with no role in reproduction
If there were no mycorrhizae, which of the following would be true?
- There would be fewer infectious diseases.
- We wouldn’t have antibiotics like penicillin.
- There would be no mushrooms for pizza.
- A lot of trees would not grow well.
- Cheese like blue cheese or Roquefort could not exist.
The sac fungi get their name from which aspect of their life cycle?
- vegetative growth form
- asexual spore production
- sexual structures
- shape of the spore
- type of vegetative structure
The small size and simple construction of prokaryotes imposes limits on the
- number of simultaneous metabolic activities and the number of genes present.
- Type of habitat they occupy and the frequency of reproduction that can occur
- Number of cells that can be associated in organized colonies
- Number of organelles present and the size of the nucleus
- Type of reproduction and the number of offspring that can be produced.
Why are red algae red?
- They live in warm coastal waters.
- They absorb blue and green light.
- They use red light for photosynthesis.
- They are related to cyanobacteria.
- They lack chlorophyll.
Evidence for an endosymbiotic origin of chloroplasts and mitochondria includes which of the following?
- both have circular DNA.
- Both have prokaryoticlike ribosomes.
- Both have histone proteins associated with DNA.
- D. Only a and b are correct.
- A, b, and c are correct.
Protozoan protists generally are classified according to
- nutrition
- cell shape
- size locomotion
- type of reproduction
According to the endosymbiotic theory, the ancestors of mitochondria were probably
- aerobic eukaryotes.
- Aerobic bacteria.
- Anaerobic bacteria.
- Cyanobacteria.
- Chloroplasts.