Question

1. use your reasons from question 3 above to explain why each of the objects below is living or non - living: lichen canary parvovirus bacterium (e. coli) ammonite fossil (a) living: reason: (b) non - living: reason: 6. what other features are used to classify life?

Explanation:

Living things generally show characteristics such as growth, reproduction, response to stimuli, metabolism, etc. Lichens are composite organisms of algae or cyanobacteria and fungi living in symbiosis, can grow and reproduce; canaries are birds, can move, reproduce and respond to the environment; bacteria like E. coli can reproduce, metabolize and respond to environmental changes. Viruses like parvovirus are acellular and lack some of the key life - processes on their own outside a host cell. Fossils like ammonite fossils are remains of once - living organisms but no longer show life processes.

Answer:

(a) Living: Lichen, Canary, Bacterium (E. coli)
Reason: They show life processes such as growth, reproduction, metabolism and response to stimuli.
(b) Non - living: Parvovirus, Ammonite fossil
Reason: Parvovirus lacks life processes outside a host cell and ammonite fossil is a preserved remains of a once - living organism with no ongoing life processes.

1. Other features used to classify life include cell structure (prokaryotic or eukaryotic), mode of nutrition (autotrophic or heterotrophic), multicellularity or unicellularity, and genetic makeup.