Question 1

Which of the following is the primary function of roots in most plants?

Accepted Answer

Absorption of water and nutrients

Question 2

Which root modification is most likely to be found in mangrove trees growing in waterlogged soils, and what is its primary function?

Accepted Answer

Pneumatophores; facilitating gas exchange

Question 3

A botanist observes a plant with horizontal underground stems that store nutrients and can give rise to new shoots. What is the correct term for these structures?

Accepted Answer

Rhizomes

Question 4

Which tissue system in plants is primarily responsible for transporting water and dissolved minerals from roots to leaves?

Accepted Answer

Vascular tissue

Question 5

Which cell type in ground tissue is most specialized for photosynthesis and storage, and is commonly found in the mesophyll of leaves?

Accepted Answer

Parenchyma

Question 6

A gardener prunes the apical bud of a shrub. What is the most likely effect on the plant’s growth?

Accepted Answer

Lateral (axillary) buds will become more active, leading to bushier growth.

Question 7

Which of the following best describes the function of guard cells in leaves?

Accepted Answer

Regulating the opening and closing of stomata

Question 8

Which of the following is a correct sequence of biological organization from smallest to largest, as illustrated in the provided images?

Accepted Answer

Molecules → Organelles → Cells → Tissues → Organs

Question 9

Which plant tissue is responsible for forming the protective outer covering of a plant, and what is one of its main components?

Accepted Answer

Dermal tissue; cuticle

Question 10

A cross-section of a tree trunk reveals several concentric rings. Which tissue is responsible for the formation of these rings, and what process produces them?

Accepted Answer

Vascular cambium; secondary growth

Question 11

Which of the following equations correctly represents the process of photosynthesis that primarily occurs in leaves?

Accepted Answer

$$6 \mathrm{CO}_2 + 6 \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6 \mathrm{O}_2$$

Question 12

Which of the following best explains why secondary growth is important for woody plants?

Accepted Answer

It increases the thickness (girth) of stems and roots, providing structural support.

Question 13

Which of the following is a function of sclerenchyma cells in plants?

Accepted Answer

Rigid support and protection

Question 14

A plant biologist is studying a tissue that transports sugars produced in the leaves to other parts of the plant. Which tissue is being studied?

Accepted Answer

Phloem

Question 15

Which of the following best describes the role of apical meristems in plants?

Accepted Answer

They are responsible for primary growth, increasing the length of roots and shoots.

Question 16

Which of the following is a real-world example of a plant organ modification for reproduction?

Accepted Answer

Strawberry stolons (runners)

Question 17

Which of the following statements about the cuticle is correct?

Accepted Answer

It is a waxy layer that reduces water loss from the plant surface.

Question 18

Which of the following best explains why buttress roots are common in tropical rainforest trees?

Accepted Answer

They provide additional support in shallow, nutrient-poor soils.

Question 19

Which of the following is a correct description of the difference between simple and compound leaves?

Accepted Answer

Simple leaves have a single undivided blade, while compound leaves have multiple leaflets attached to a single petiole.

Plant Structure, Growth, and Development: Organs, Tissues, and Cells

Study Guide - Practice Questions

Study Guide - Flashcards