Biology: Biodiversity REVIEW

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What are coelomates?

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Coelomates are animals that possess a coelom, a fluid-filled body cavity lined by mesoderm. All coelomates are triploblastic, meaning they have three germ layers: ectoderm, mesoderm, and endoderm.

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What causes a red tide?

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A red tide is caused by phytoplankton called dinoflagellates, which can produce toxins harmful to marine life and humans.

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What is the significance of the shelled, amniotic egg in vertebrates?

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The shelled, amniotic egg allows vertebrates to reproduce in relatively dry environments by providing a protective environment for the developing embryo, preventing desiccation.

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What is a gametophyte?

Back

A gametophyte is the multicellular haploid life stage of a plant that produces gametes (sperm and eggs) for sexual reproduction.

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What role does the algal partner play in lichen symbiosis?

Back

The algal partner in a lichen symbiosis is primarily responsible for carbohydrate production through photosynthesis.

Front

Define biodiversity.

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the diversity of species, genetic variation, and ecosystem diversity.

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What is the difference between a diploid and haploid organism?

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Diploid organisms have two sets of chromosomes (one from each parent), while haploid organisms have only one set of chromosomes.

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What is the function of the three-chambered heart in some vertebrates?

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The three-chambered heart allows for some separation of oxygenated and deoxygenated blood, improving efficiency in respiration and circulation.

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What is symbiosis?

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Symbiosis is a close and often long-term interaction between two different biological species, which can be mutualistic, commensalistic, or parasitic.

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What are the main types of symbiotic relationships?

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The main types of symbiotic relationships are mutualism (both species benefit), commensalism (one benefits, the other is unaffected), and parasitism (one benefits at the expense of the other).