Question 1

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

Accepted Answer

They increase the surface area for absorption of water and minerals.

Question 2

A plant with a main vertical root and many lateral roots is most likely to be classified as which type of root system?

Accepted Answer

Taproot system

Question 3

Which tissue type is responsible for the transport of water and minerals in plants, and what is the main cell type involved?

Accepted Answer

Vascular tissue; xylem cells

Question 4

In the cross section of a typical eudicot stem, which tissue forms a ring and contains both xylem and phloem?

Accepted Answer

Vascular bundle

Question 5

Which cell type is alive at maturity, has thin primary cell walls, and is the main site of photosynthesis and storage in leaves?

Accepted Answer

Parenchyma cells

Question 6

What is the main function of the apical bud in the shoot system of a plant?

Accepted Answer

To inhibit the growth of axillary buds through apical dominance

Question 7

Which of the following best explains why pruning (removing the apical bud) results in a bushier plant?

Accepted Answer

It removes the source of auxin, allowing axillary buds to grow.

Question 8

Which of the following is a distinguishing feature of monocot leaves compared to eudicot leaves?

Accepted Answer

Monocot leaves have parallel veins.

Question 9

Which type of plant cell is dead at maturity, has thick secondary cell walls containing lignin, and provides structural support?

Accepted Answer

Sclerenchyma cells

Question 10

Which of the following equations correctly represents the relationship between surface area ($$A) $$and volume ($$V) $$for a root hair modeled as a cylinder of length $$l$$ and radius $$r$$?

Accepted Answer

$$A = 2 \pi r^2$ + 2 \pi r l$$

Question 11

A plant is observed to have a ring of vascular bundles in its stem cross section. Which group does this plant most likely belong to?

Accepted Answer

Eudicots

Question 12

Which of the following is NOT a function of the root system?

Accepted Answer

Conducting photosynthesis

Question 13

Which cell type in the phloem is responsible for fast conductance of sugars and lacks a nucleus, cytoskeleton, vacuoles, and ribosomes?

Accepted Answer

Sieve-tube elements

Question 14

Which process in plant development involves the formation of specific tissues and organs at specific locations?

Accepted Answer

Morphogenesis

Question 15

Which type of meristem is responsible for secondary growth (increase in girth) in woody plants?

Accepted Answer

Lateral meristem

Question 16

Which of the following best describes the role of mycorrhizal associations in plant roots?

Accepted Answer

They form a mutualistic relationship that enhances mineral absorption.

Question 17

Which of the following statements about plant growth is correct?

Accepted Answer

Plant growth is generally indeterminate, with the ability to keep growing until killed.

Question 18

Which tissue type in leaves contains the photosynthetic parenchyma cells and allows for gas diffusion?

Accepted Answer

Ground tissue (mesophyll)

Question 19

Which of the following is a real-world example of a modified root that allows plants to survive in waterlogged soils by facilitating gas exchange?

Accepted Answer

Pneumatophores in mangroves

Question 20

Which equation best represents the volume ($$V) of a $$cylindrical root hair with length $$l$$ and radius $$r$$?

Accepted Answer

$$V = \pi r^2$ l$$

Plant Structure, Growth, and Development – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards