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Chapter 30: Q. 30 (page 869)

Compare the structure and function of xylem to that of phloem.

Short Answer

Expert verified

Xylem tissue responsible for water transportation and phloem tissue is for organic substance transportation.

Step by step solution

01

Step-1 Introduction 

Transportation of water and nutrients are mainly influenced by evapotranspiration, water potential, and stomatal regulation. A complex conducting tissue that occurs in a vascular bundle is called vascular tissue. This vascular tissue is responsible for the transportation of water, nutrients, and minerals.

02

Step-2 Explanation

Xylem Phloem
Responsible for water and mineral transport
Responsible for food and organic matter transport
Components like vessel elements, tracheids, and xylem parenchyma are present
Composed of companion cells, sieve-tube cells, phloem fibers, and phloem parenchyma
All are dead at maturity except xylem parenchyma
Most of the cells are alive at maturity
The movement of material is unidirectional
The movement of material is bidirectional
Located at the center of the vascular bundle
Situated on the outer side of the vascular bundle

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Most popular questions from this chapter

Cells of the ________ contain chloroplasts.

a. epidermis

b. vascular tissue

c. stomata

d. mesophyll

The ________ forces selective uptake of minerals in the root.

a. pericycle

b. epidermis

c. endodermis

d. root cap

Describe an example of a plant with leaves that are adapted to cold temperatures.

Which of the following statements is false?

a. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf.

b. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the phloem. Transpiration draws water from the leaf.

c. Water potential decreases from the roots to the top of the plant.

d. Water enters the plants through root hairs and exits through stoma.

A seedling germinating under a stone grows at an angle away from the stone and upward. This response to touch is called ________.

a. gravitropism

b. thigmonasty

c. thigmotropism

d. skototropism
See all solutions

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