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BSC 2011 EXAM LATEST 2024 QUESTIONS AND ANSWERS ALREADY GRADED A+ EXPERT CERTIFIED 100%
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BSC 2011 EXAM LATEST 2024 QUESTIONS AND ANSWERS ALREADY GRADED A+ EXPERT CERTIFIED 100%
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BSC 201 1 EXAM LATEST 2024 QUESTIONS AND ANSWERS ALREADY GRADED A+ EXPERT CERTIFIED 100% Due to their pinnately compound leaves, tropical habitat, and overall appearance, which Gymnosperm phylum are often thought of as a type of palm (which is actually a flowering plant)? - ANSWER S-Cycadophyta Why are conifers and cycads considered gymnosperms? - ANSWERS -The female gametophyte is not completely enclosed in sporophyte tissue at the time of pollination, naked seeds. The seed coat is formed by the hardening of the - ANSWERS -
integume nt. Based on the number of species, the most successful current extant phylum of plants is the - ANSWERS -Anthophyta, Angiosperms. Alexander Fleming kept finding mold contamination that was killing his bacterial cultures. This observation eventually lead to the development of the antibiotic penicillin. Why would a fungus produce a compound that is selectively toxic to bacteria? - ANSW ERS-Fungi compete with bacteria for resources. In what way are bacteria and fungi the same? - ANSWERS -Ecological contribution Which molecule would be an indicator of fungal contamination in a rug preparation? - ANSWERS -Chitin Specialized symbiotic asso ciations between the roots of plants and fungi are called - ANSWERS -mycorrhizae A mass of hyphae in an ascomycete is commonly referred to as a(n) - ANSWERS -mycelium The cell walls of fungi are made up of polysaccharides including - ANSWERS -chitin A symb iotic association between a fungus and a cyanobacterium is called a - ANSWERS -lichen The system of fungal filaments (hyphae) that penetrates and grows through the substrate is called a(n) - ANSWERS -mycelium All of the following are reproductive structure s found in some fungi except - ANSWERS -mycorrhiza Asexual reproduction in ascomycetes takes place by means of - ANSWERS -conidiospores The fruiting structures formed by secondary mycelia of basidiomycetes are known as - ANSWERS -ascocarps Karyogamy is - ANSWERS -the fusion of 2 cells from 2 different mating types of fungi. A mycologist visits your biology class and discusses her research on a particular fungus that lives on the bark of damaged spruce trees. She explains that the fungal hyphae of her resear ch organism is heterokaryotic. You raise your hand and request that she define that word. Her correct response is - ANSWERS -heterokaryotic means that the nuclei of each compartment of the hyphae are genetically distinct. Fungi are __________ for most of t heir life cycle. - ANSWERS -Haploid How does fungal mitosis differ from animal mitosis? - ANSWERS -The nuclear envelope remains intact in fungal mitosis. Plants are in Domain - ANSWERS -Eukarya. Fungi are in Domain - ANSWERS -Eukarya . Are Fungi more closely related to Plants or Animals? - ANSWERS -
Animals Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful. Why is there a difference? - ANSWERS -
Ctenphores do not possess nematocysts. Animals are thought to have descended from choanoflagellate protists. Which poriferan cell type lends evidence to this claim? - ANSWERS -
Choanocyte Sea urchins and jellyfish are both radially symmetrical, but sea urchins and humans are much more closely related t han sea urchins and jellyfish. Why is this true? - ANSWERS -Sea urchins have bilaterally symmetrical larvae and exhibit radial cleavage. Of the following features, which is the most widely shared by most groups in the animal kingdom? - ANSWERS -some sort of symmetrical body plan, whether radial or bilateral Given the distribution of the 30 or so animal phyla across the Earth's various ecosystems, what would be the most likely habitat for the origin of animals (where is majority of the biosphere)? - ANSWERS -
Oceans
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