Put the following biological structures in the correct order of organization, from smallest to largest: a. rose, shoot system, stem, xylem, tubular cell, meristematic cell b. meristematic cell, tubular cell, xylem, phloem, rose c. tubular cell, meristematic cell, xylem, stem, shoot system, rose d. meristematic cell, tubular cell, xylem, stem, shoot system, rose

D. Meristematic cell, tubular cell, xylem, stem, shoot system, rose

Explanation:

Among these structures cells are the smallest. There are two type of cells in this question, meristematic cell & tubular cell. Meristematic cells are rapidly dividing cells therefore they are unable to grow much so they are smaller than tubular cells. Xylem is a tissue (a group of cells meant for a specialized function) which is present inside stem and serves the function of transporting water in a plant. Stem is a bigger structure than xylem but smaller than shoot system because shoot system comprises stem plus lateral branches. Last comes rose which is a flower and there are a number of flowers in a rose plant so it is the biggest structure among all these.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.