____ have tubular cells with perforated walls and are living in nature.
Sieve tubes:
Final answer: Sieve tubes have tubular cells with perforated walls and are living in nature.
___ have tubular cells with perforated walls and are living in nature.
Question 46 Fill in the blanks (a) Cork cells possess ___ on their walls that makes it impervious to gases and water. (b) ___ have tubular cells with perforated walls and are living in nature. (c) Bone possesses a hard matrix composed of ___ and ___.