Question 1

Which of the following correctly matches the three basic types of plant cells with their primary functions?

Accepted Answer

Parenchyma (photosynthesis and storage), Collenchyma (support in growing regions), Sclerenchyma (rigid support and protection)

Question 2

Where are apical meristems and lateral meristems found in a plant, and what is their primary function?

Accepted Answer

Apical meristems are found at the tips of roots and shoots and are responsible for primary growth; lateral meristems are found along the sides of stems and roots and are responsible for secondary growth.

Question 3

Which of the following best describes the difference between early wood and late wood in a tree's growth rings?

Accepted Answer

Early wood is formed at the beginning of the growing season and has larger, thinner-walled cells; late wood is formed later and has smaller, thicker-walled cells.

Question 4

A botanist is comparing a monocot and a dicot plant. Which of the following characteristics would she expect to find in the monocot?

Accepted Answer

One cotyledon, parallel leaf venation, vascular bundles scattered throughout the stem

Question 5

Which process is primarily responsible for the upward movement of water from roots to leaves in tall trees, and what property of water is essential for this process?

Accepted Answer

Transpirational pull; cohesion between water molecules

Question 6

Which of the following best explains why stomata close during hot, dry conditions?

Accepted Answer

To prevent excessive water loss through transpiration

Question 7

Which adaptation is most likely found in a xerophyte?

Accepted Answer

Thick cuticle and sunken stomata to reduce water loss

Question 8

Which of the following is a plant macronutrient, and what is its primary role?

Accepted Answer

Nitrogen (N); component of amino acids and nucleic acids

Question 9

How do carnivorous plants obtain essential nutrients in nutrient-poor environments?

Accepted Answer

By trapping and digesting insects to supplement their nutrient intake

Question 10

Which of the following correctly describes double fertilization in angiosperms?

Accepted Answer

One sperm fertilizes the egg, and another sperm fertilizes a polar nucleus, forming a triploid endosperm

Question 11

Which mechanism helps plants avoid self-fertilization?

Accepted Answer

Temporal separation of male and female gamete maturation (dichogamy)

Question 12

Which of the following is an example of asexual reproduction in plants?

Accepted Answer

Production of runners (stolons) in strawberry plants

Question 13

Which of the following is a major public concern regarding transgenic (genetically modified) agricultural plants?

Accepted Answer

Potential for gene transfer to wild relatives and effects on non-target organisms

Question 14

Which plant hormone is primarily responsible for promoting cell elongation and is involved in phototropism?

Accepted Answer

Auxin

Question 15

During autumn, many deciduous plants lose their leaves. What is an advantage of this process?

Accepted Answer

It reduces water loss and prevents damage from freezing temperatures

Question 16

Which of the following best describes the process of phloem translocation?

Accepted Answer

Movement of sugars from sources (like leaves) to sinks (like roots or fruits) via phloem

Question 17

A plant is observed to have vascular bundles scattered throughout its stem, parallel leaf venation, and fibrous roots. Which group does it most likely belong to?

Accepted Answer

Monocots

Question 18

Which of the following equations best represents the process of photosynthesis in plant cells?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 19

Which of the following is a micronutrient required by plants?

Accepted Answer

Molybdenum (Mo)

Question 20

Which of the following best describes the difference between heartwood and sapwood in a tree?

Accepted Answer

Heartwood is the inner, non-functional xylem that provides structural support; sapwood is the outer, functional xylem that transports water.

Plant Form and Function: Study Guide

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