18 Questions
What was a limitation of the artificial systems in classification mentioned in the text?
They gave equal importance to vegetative and sexual characteristics.
What additional features were considered in natural classification systems?
Phytochemistry and embryology
Who proposed a classification system for flowering plants based on natural affinities among organisms?
George Bentham and Joseph Dalton Hooker
What is the basis of phylogenetic classification systems?
Evolutionary relationships between organisms
What aspect of classification becomes more important when there is no supporting fossil evidence?
Using information from multiple sources
How is Numerical Taxonomy carried out according to the text?
Assigning equal importance to all characters
What is the primary method of reproduction in algae?
Asexual reproduction by fragmentation
Which of the following is a common type of spore produced during asexual reproduction in algae?
Zoospores
What is the key characteristic that distinguishes sexual reproduction in Ulothrix and Spirogyra?
Flagellated gametes in Ulothrix and non-flagellated in Spirogyra
What distinguishes kelps from other forms of algae?
Kelps form massive plant bodies
Which pigment is characteristic of algae and is responsible for photosynthesis?
Chlorophyll
How do algae primarily reproduce vegetatively?
By fragmentation
What is the term for the fusion between a large, nonmotile female gamete and a smaller, motile male gamete?
Oogamous
Which class do algae like Fucus and Laminaria belong to?
Phaeophyceae
Which compounds are produced by certain brown and red algae that are used commercially as water-holding substances?
Algin and carrageen
What is the primary purpose of agar obtained from Gelidium and Gracilaria?
To grow microbes
Which algae class are commonly referred to as green algae?
Chlorophyceae
What process is exemplified by the vegetative reproduction observed in many algae?
Fragmentation
Test your knowledge on classification systems in biology, including natural and artificial systems based on different criteria such as external and internal features, ultrastructure, anatomy, embryology, and phytochemistry.
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