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Chapter 26: Q. 18 (page 697)

Plants are a source of ________.

a. food

b. fuel

c. medicine

d. all of the above

Short Answer

Expert verified

The correct option is (d). all of the above

Step by step solution

01

Step 1. Introduction

  • Plants are the most essential organisms in an ecosystem.
  • They are the primary producers and can produce their own sustenance.
  • They are the primary source of energy for all other living beings.
  • They are photosynthetic organisms that uses the energy from sun to convert carbon dioxide and water into carbohydrates and oxygen.
02

Step 2. Reason for Correct option

  • Plants are the primary producers and are a source of food for all heterotrophs, organisms that cannot produce their own sustenance.
  • Plants are an important source of fuel. They provide firewood for household use and are used to produce biofuel.
  • Plants have been recognized for their medicinal value since the ancient times. They contain alkaloids, which are known for their high medicinal value and are used to produce medicines to treat various ailments.

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Most popular questions from this chapter

Which of the following structures in a flower is not directly involved in reproduction?

a. the style

b. the stamen

c. the sepal

d. the anther

Corn develops from a seedling with a single cotyledon, displays parallel veins on its leaves, and produces monosulcate pollen. It is most likely:

a. a gymnosperm

b. a monocot

c. a eudicot

d. a basal angiosperm

White and sweet-smelling flowers with abundant nectar are probably pollinated by

a. bees and butterflies

b. flies

c. birds

d. wind

Which of the following traits characterizes gymnosperms?

a. The plants carry exposed seeds on modified leaves.

b. Reproductive structures are located in a flower.

c. After fertilization, the ovary thickens and forms a fruit.

d. The gametophyte is the longest phase of the life cycle.

Abundant and powdery pollen produced by small, indistinct flowers is probably transported by:

a. bees and butterflies

b. flies

c. birds

d. wind
See all solutions

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