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Chapter 30: Q 32. (page 869)

What is the function of lenticels?

Short Answer

Expert verified

Gaseous exchange

Step by step solution

01

Step-1 Introduction

Plant tissues are specialized tissues that perform specific functions and contribute to plant growth and development. Stems are made of mainly three types of specialized tissues such as; ground tissue, dermal tissue, and vascular tissue. Different roles are played by different groups of cells.

02

Step-2 Explanation

In the case of woody plants, a small porous structure appears within the cork of the young branches that are the openings of the periderm. These structures are known as lenticels, within which it contains intercellular spaces.

Lenticels play a significant role in plants. When the stomata remain close, these lenticels help in gaseous exchange, and sometimes a little transpiration may take place through the lenticel, called lenticular transpiration.

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Most popular questions from this chapter

Tracheids, vessel elements, sieve-tube cells, and companion cells are components of ________.

a. vascular tissue

b. meristematic tissue

c. ground tissue

d. dermal tissue

Roots that enable a plant to grow on another plant are called ________.

a. epiphytic roots

b. prop roots

c. adventitious roots

d. aerial roots

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

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.

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

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