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DAT TAXONOMY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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DAT TAXONOMY QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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DAT TAXONOMY QUESTIONS ANDANSWERS WITH SOLUTIONS 2024
taxa - ANSWER levels of organization
kingdom, phylum, class, order, family genus and species
5 kingdoms - ANSWER monera, protista, fungi, plantae, and animalia
6 kingoms - ANSWER monera, protista, fungie, plantae, animalia and archaebacteria
3 domain system - ANSWER bacteria, archaea, eukarya
domain bacteria - ANSWER all single celled prokaryotes with no internal membranes (no nucleus,
mitochondria, or chloroplasts, may be anaerobes/ aerobes, no introns
-pathogens, decomposers, undergo conjugation
domain archaea - ANSWER unicellular, prokaryotic, includes extremophiles like methanogens, halophiles
and thermophiles, have some introns present
halophiles - ANSWER thrive in environments with high salt concentration
thermophiles - ANSWER thrive in high temperatures
domain eukarya - ANSWER have nucleus and internal organelles
-include the kingdoms: protista, fungi, plantae, and animalia
kingdom protista - ANSWER all are eukaryotes, single/mult celled, heterotrophs and autotrophs
-can have flagella, pseudopods, cillia
-can undergo conjugation
-can cause serious diseases
, kingdom fungi - ANSWER heterotrophic eukaryotes, can be uni/multi celled, important decomposers,
carry out extracellular digestion by secreting hydrolytic enzymes
-detrivores
chitin - ANSWER what the cell walls of fungi are composed of
lichens - ANSWER where fungi and algae have a mutual symbiotic relationship
-can survive harsh conditions
asexual reproduction of fungi - ANSWER 1. budding - a cell grows out of an existing fungal cell
2. spore formation- where spores will germinate under favorable conditions to become active
3. fragmentation- where the parent breaks into parts that regenerate into new individuals
sexual reproduction in fungi - ANSWER fusion- where 2 haploid gametes fuse together (dikaryon) and
fuse their nucleis together to form a diploid zygote which undergoes meiosis and forms a haploid
progeny
endospores - ANSWER dormant form produced by some bacteria under harsh conditions
-have a thick peptidoglycan coat that can survive through extreme conditions
conjugation - ANSWER where a cell extends out a sex pili to another cell and it allows for replication of
plasmid and transfer of plasmid to neighboring cell. This is a way to share genetic information, add to
diversity and is a common way of conferring antibiotic resistance genes
lytic cycle - ANSWER 1. adsorption- bind to cell surface via tail
2. penetration- puncture cell wall and membrane/ inject genome into host cell
3. hydrolase is produced and degrades host's genome
4. replication of viral genome and synthesis of capsid protein
5. assembly of new virus particles
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