Question 1

Which of the following best describes the main function of the root hairs in a plant's root system?

Accepted Answer

To increase the surface area for absorption of water and minerals

Question 2

A botanist observes a plant with vascular bundles scattered throughout the stem cross-section. Which type of plant is this most likely to be?

Accepted Answer

A monocot

Question 3

Which of the following cell types is dead at maturity and provides rigid support due to thick secondary walls strengthened with lignin?

Accepted Answer

Sclerenchyma cells

Question 4

What is the primary function of the vascular cambium in woody plants?

Accepted Answer

To add layers of secondary xylem and phloem

Question 5

Which structure is responsible for the opening and closing of stomata in leaves?

Accepted Answer

Guard cells

Question 6

A plant is observed to have a taproot system. Which of the following is most likely true about this plant?

Accepted Answer

It is a eudicot or gymnosperm

Question 7

Which of the following best explains why tree rings can be used to estimate the age of a tree?

Accepted Answer

Each ring represents a year of secondary growth, with early wood and late wood forming distinct layers

Question 8

Which of the following is a function of trichomes on the shoot epidermis?

Accepted Answer

Defending against insect herbivores

Question 9

Which of the following statements about sieve-tube elements is correct?

Accepted Answer

They are alive at functional maturity but lack organelles

Question 10

A plant organ ceases to grow after reaching a certain size. This is an example of which type of growth?

Accepted Answer

Determinate growth

Question 11

Which of the following best describes the role of the endodermis in roots?

Accepted Answer

It regulates the passage of substances from the soil into the vascular cylinder

Question 12

Which of the following is NOT a modified stem?

Accepted Answer

Tendril

Question 13

Which tissue system is primarily responsible for photosynthesis and storage in plants?

Accepted Answer

Ground tissue system

Question 14

Which of the following best explains why monocot leaves typically have parallel veins?

Accepted Answer

Their leaf morphology evolved for efficient water transport

Question 15

Which of the following is a correct sequence of tissues from the outside to the inside of a woody stem?

Accepted Answer

Periderm → Secondary phloem → Vascular cambium → Secondary xylem

Question 16

A plant is observed to have a large number of sclereids in its tissues. What is the most likely function of these cells?

Accepted Answer

Rigid support and protection

Question 17

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

Accepted Answer

Heartwood is the older, non-functional xylem; sapwood is the younger, functional xylem

Question 18

Which of the following is a real-world example of a plant with a modified leaf, and what is its function?

Accepted Answer

Pea tendril, for climbing support

Question 19

Which of the following equations best represents the relationship between the number of growth rings ($$n) $$and the age of a tree in years ($$t$$), assuming one ring forms per year?

Accepted Answer

$$n = t$$

Question 20

A plant is classified as a biennial. Which of the following best describes its life cycle?

Accepted Answer

It completes its life cycle in two years

Plant Structure, Growth, and Development (Chapter 35): Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드