Question 1

Which of the following features is characteristic of eudicots but NOT monocots?

Accepted Answer

Stem vascular bundles arranged in a ring

Question 2

A botanist is examining a plant with a taproot, netted leaf veins, and flower parts in multiples of five. To which group does this plant most likely belong?

Accepted Answer

Eudicots

Question 3

Which meristem is responsible for the increase in thickness (girth) of woody plants, and what type of growth does it produce?

Accepted Answer

Lateral meristem; secondary growth

Question 4

A plant is observed to continue growing in height and producing new leaves throughout its life. Which type of growth and meristem is primarily responsible for this?

Accepted Answer

Indeterminate growth; apical meristem

Question 5

Which of the following best describes the function of xylem vessel elements in vascular plants?

Accepted Answer

Water and mineral transport through perforation plates

Question 6

A plant root is observed to have a region where cells are rapidly dividing, followed by a region where cells elongate, and then a region where cells differentiate into specialized tissues. What is the correct order of these regions from the root tip upward?

Accepted Answer

Zone of cell division → zone of elongation → zone of differentiation

Question 7

Which of the following is a correct pairing of plant tissue system and its primary function?

Accepted Answer

Ground tissue: support and storage

Question 8

A plant is growing in nutrient-poor soil and forms a mutualistic relationship with a fungus. The fungus forms a sheath around the root but does NOT penetrate root cell membranes. What type of mycorrhizal association is this, and what is the main benefit to the plant?

Accepted Answer

Ectomycorrhizae; increased absorption of water and minerals

Question 9

Which of the following equations correctly represents the conversion of ammonium to nitrate by soil bacteria (nitrification)?

Accepted Answer

$$\mathrm{NH_4$^+ \rightarrow NO_3$^-}$$

Question 10

Which of the following statements about guard cells and stomata is correct?

Accepted Answer

Stomata are pores that allow gas exchange, and guard cells regulate their opening and closing

Question 11

A plant growing on the branch of a tree, obtaining better light but not harming the tree, is an example of which type of ecological interaction?

Accepted Answer

Commensal

Question 12

Which of the following macronutrients is directly obtained by plants from the atmosphere through photosynthesis?

Accepted Answer

Carbon ($$\mathrm{C})$$

Question 13

A plant is observed to have scattered vascular bundles in its stem cross-section, parallel leaf veins, and a fibrous root system. Which of the following is most likely true about its flower parts?

Accepted Answer

They are in multiples of three

Question 14

Which specialized vascular cell is alive at maturity, lacks a nucleus, and is responsible for transporting sugars in plants?

Accepted Answer

Sieve-tube elements

Question 15

A plant that traps and digests insects to supplement its nitrogen intake is best described as:

Accepted Answer

Carnivorous

Question 16

Which of the following best explains why plants need micronutrients such as iron ($$\mathrm{Fe}) $$and manganese ($$\mathrm{Mn}$$)?

Accepted Answer

They act as cofactors for enzyme activity

Question 17

Which of the following is a correct sequence of tissue layers from the outside to the inside of a typical woody plant stem?

Accepted Answer

Epidermis → cortex → vascular tissue → pith

Question 18

A plant root is infected with nitrogen-fixing bacteria. What is the main benefit to the plant from this mutualistic relationship?

Accepted Answer

Direct access to atmospheric nitrogen converted to ammonium

Question 19

Which of the following best describes the function of the palisade mesophyll in a leaf?

Accepted Answer

Main site of photosynthesis due to tightly packed chloroplast-rich cells

Question 20

A plant is observed to have a star-shaped xylem in its root cross-section. Which group does this plant most likely belong to?

Accepted Answer

Eudicots

Plant Biology: Diversity, Structure, Tissues, and Adaptations

Guida di studio - Domande di pratica

Study guide - Flashcard