Mention a common characteristic feature of mammalian RBC and plant sieve tube cells.

Explanation:

The common characteristic feature of plant sieve tube and mammalian erythrocyte is the absence of nucleus. sieve tubes are the component of phloem and do not contain nucleus. Similarly, erythrocytes in mammalian cell also do not posses nucleus.

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The common characteristic feature of plant sieve tube and mammalian erythrocyte is the absence of nucleus. sieve tubes are the component of phloem and do not contain nucleus. Similarly, erythrocytes in mammalian cell also do not posses nucleus

Explanation:

b. heterotroph

explanation:

not too sure but maybe in the hot springs.