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Questions and Answers
What is the characteristic feature of diatoms?
What is the characteristic feature of diatoms?
- Extracellular digestion
- Presence of chitin in cell walls
- Two-part silica shell (correct)
- Chloroplasts with brown accessory pigments
Why are diatoms essential for reef-building corals?
Why are diatoms essential for reef-building corals?
- They provide the corals with carbon dioxide
- They serve as a source of shelter
- They supply the corals with oxygen and sugars (correct)
- They are predators of harmful algae
What is the primary pigment in the chloroplasts of diatoms?
What is the primary pigment in the chloroplasts of diatoms?
- Xanthophylls
- Chlorophyll a
- Fucoxanthin (correct)
- Chlorophyll b
How do diatoms reproduce to form chains?
How do diatoms reproduce to form chains?
What is the ecological importance of diatoms in lakes and seas?
What is the ecological importance of diatoms in lakes and seas?
What distinguishes diatoms from other protists like dinoflagellates?
What distinguishes diatoms from other protists like dinoflagellates?
What is the primary function of xylem in plants?
What is the primary function of xylem in plants?
Which of the following is NOT a seedless vascular plant mentioned in the text?
Which of the following is NOT a seedless vascular plant mentioned in the text?
What major challenge do land plants face that led to the development of a waxy cuticle?
What major challenge do land plants face that led to the development of a waxy cuticle?
What is the significance of alternation of generations in plants?
What is the significance of alternation of generations in plants?
What is the primary purpose of tissue modifications like thorns and spines in plants?
What is the primary purpose of tissue modifications like thorns and spines in plants?
Which process involves prokaryotes taking up DNA found in the environment?
Which process involves prokaryotes taking up DNA found in the environment?
Which group dominated the Carboniferous period but now represents only a fraction of global plant diversity?
Which group dominated the Carboniferous period but now represents only a fraction of global plant diversity?
Which of the following is NOT a method of genetic diversity and exchange in prokaryotes mentioned in the text?
Which of the following is NOT a method of genetic diversity and exchange in prokaryotes mentioned in the text?
Which group of eukaryotic organisms is described as 'not animals, fungi, or plants'?
Which group of eukaryotic organisms is described as 'not animals, fungi, or plants'?
What is the term used for the catchall category of eukaryotic organisms that are not animals, fungi, or plants?
What is the term used for the catchall category of eukaryotic organisms that are not animals, fungi, or plants?
What is the vegetative body of a fungi called?
What is the vegetative body of a fungi called?
Which process involves the transfer of DNA, usually as a plasmid, from one prokaryote to another?
Which process involves the transfer of DNA, usually as a plasmid, from one prokaryote to another?
How do multicellular fungi reproduce asexually?
How do multicellular fungi reproduce asexually?
What characteristic distinguishes protists from animals, fungi, and plants?
What characteristic distinguishes protists from animals, fungi, and plants?
What is the result of cytoplasmic fusion in sexual reproduction in fungi?
What is the result of cytoplasmic fusion in sexual reproduction in fungi?
What is the role of the plant in the mycorrhizal partnership with fungi?
What is the role of the plant in the mycorrhizal partnership with fungi?
What defines a lichen as a composite organism?
What defines a lichen as a composite organism?
Why are lichens often among the first organisms to colonize bare rock?
Why are lichens often among the first organisms to colonize bare rock?
Which group of seed plants lacks both flowers and fruits?
Which group of seed plants lacks both flowers and fruits?
Which group of gymnosperms superficially resemble palms and were dominant during the time of the dinosaurs?
Which group of gymnosperms superficially resemble palms and were dominant during the time of the dinosaurs?
How many species of gymnosperms currently belong to the group Gnetophyta?
How many species of gymnosperms currently belong to the group Gnetophyta?
During which time period did flowering plants evolve to dominate most terrestrial ecosystems?
During which time period did flowering plants evolve to dominate most terrestrial ecosystems?
What novel structure in angiosperms allows them to form cooperative evolutionary relationships with animals for pollen dispersal?
What novel structure in angiosperms allows them to form cooperative evolutionary relationships with animals for pollen dispersal?
What do fruits serve as in angiosperms apart from protecting the developing embryo?
What do fruits serve as in angiosperms apart from protecting the developing embryo?
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