BIOL227 Exam Questions and Answers
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biological diversity, the variety and variability of life. Underpins ecosystem levels. -
✔✔Biodiversity
Benefits obtained from regulation of ecosystem processes. E.g climate regulation, water
purification and waste management - ✔✔Ecosystem Services
Different environmental boundaries that if crossed increases the risk that the earth
systems becomes less hospitable leading to deterioration to human well being -
✔✔Planetary Boundaries
(epoch) current geological age, period during which human activity has been the
dominant influence on climate and the environment. - ✔✔Anthropocene
Global conservation status of biological species. - ✔✔IUCN Red list
Core boundary - loss of biodiversity, which could alone drive earth into a new state -
✔✔Biosphere Integrity
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, Large abrupt changes in the structure and function of a system. Regime is a
characteristic behavior of a system maintained by feed-backs - ✔✔Regime shift
Gaps in our taxonomic knowledge, shortage of taxonomists. - ✔✔Taxonomic
Impediment
Land plants. "makes embryos". Young sporophyte (2n), derives nutrition from the
female gametophyte tissue. - ✔✔Embryophyte
In spore walls, composition unknown, has many polymers. Is chemically stable and
resistant to decay. Preserved in soils and sediment. - ✔✔Sporopollenin
Thin layer of waxy polymers on the epidermis of leaves - ✔✔Cuticle
Symbiosis between fungi and plants, trading carbon for water and nutrients -
✔✔Mycorrhizas
Asexual reproduction in plants, multi-cellular structures detach from parent plant and
become a new genetic identical - ✔✔Vegetative Reproduction
A life cycle where multi-cellular diploid and haploid stages occur. Meiosis is sporic. Is
an alternation of generations, 2 generations of multi-cellular organisms - gametophyte
and sporophyte, each giving rise to each other - ✔✔Haplodiplontic Life Cycle
(Period) 505-440 MYA. Lots of multi-cellular life in sea, not much on land. Water-to-
land transition of multicellular land plant ancestors - ✔✔Ordovician
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biological diversity, the variety and variability of life. Underpins ecosystem levels. -
✔✔Biodiversity
Benefits obtained from regulation of ecosystem processes. E.g climate regulation, water
purification and waste management - ✔✔Ecosystem Services
Different environmental boundaries that if crossed increases the risk that the earth
systems becomes less hospitable leading to deterioration to human well being -
✔✔Planetary Boundaries
(epoch) current geological age, period during which human activity has been the
dominant influence on climate and the environment. - ✔✔Anthropocene
Global conservation status of biological species. - ✔✔IUCN Red list
Core boundary - loss of biodiversity, which could alone drive earth into a new state -
✔✔Biosphere Integrity
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, Large abrupt changes in the structure and function of a system. Regime is a
characteristic behavior of a system maintained by feed-backs - ✔✔Regime shift
Gaps in our taxonomic knowledge, shortage of taxonomists. - ✔✔Taxonomic
Impediment
Land plants. "makes embryos". Young sporophyte (2n), derives nutrition from the
female gametophyte tissue. - ✔✔Embryophyte
In spore walls, composition unknown, has many polymers. Is chemically stable and
resistant to decay. Preserved in soils and sediment. - ✔✔Sporopollenin
Thin layer of waxy polymers on the epidermis of leaves - ✔✔Cuticle
Symbiosis between fungi and plants, trading carbon for water and nutrients -
✔✔Mycorrhizas
Asexual reproduction in plants, multi-cellular structures detach from parent plant and
become a new genetic identical - ✔✔Vegetative Reproduction
A life cycle where multi-cellular diploid and haploid stages occur. Meiosis is sporic. Is
an alternation of generations, 2 generations of multi-cellular organisms - gametophyte
and sporophyte, each giving rise to each other - ✔✔Haplodiplontic Life Cycle
(Period) 505-440 MYA. Lots of multi-cellular life in sea, not much on land. Water-to-
land transition of multicellular land plant ancestors - ✔✔Ordovician
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