Q: Which of the following equations correctly represents the relationship between the three main tissue systems in a plant organ cross-section?

$$\text{Plant Organ} = \text{Dermal Tissue} + \text{Ground Tissue} + \text{Vascular Tissue}$$

Question 1

Which of the following best describes the three main tissue systems produced by shoot and root apical meristems (SAMs and RAMs) in plants?

Accepted Answer

Dermal, vascular, and ground tissue systems

Question 2

A plant cell is observed to be alive at maturity, with thin, flexible primary cell walls, and isodiametric in shape. Which tissue type does this cell most likely belong to?

Accepted Answer

Parenchyma

Question 3

Which subtype of parenchyma is specialized for photosynthesis and is most commonly found in leaves?

Accepted Answer

Chlorenchyma

Question 4

Aerenchyma tissue is most likely to be found in which type of plant?

Accepted Answer

Aquatic plants

Question 5

Which of the following statements about collenchyma cells is TRUE?

Accepted Answer

They have unevenly thickened primary cell walls and provide flexible support.

Question 6

A botanist is examining a plant tissue that stains red with phloroglucinol HCl, is composed of elongated cells, and provides rigid support. Which tissue is being observed?

Accepted Answer

Sclerenchyma

Question 7

Which of the following is a correct match between a sclerenchyma cell type and its typical location or function?

Accepted Answer

Macrosclereids – seed coat

Question 8

Which of the following best explains why bast fibers (primary phloem fibers) are used to make linen and hemp products?

Accepted Answer

They are mostly cellulose with very little lignin, making them flexible and strong.

Question 9

A student is asked to identify a tissue that is dead at maturity, has both primary and secondary cell walls with lignin, and is responsible for rigid support. Which tissue should the student choose?

Accepted Answer

Sclerenchyma

Question 10

Which of the following equations correctly represents the relationship between the three main tissue systems in a plant organ cross-section?

Accepted Answer

$$	ext{Plant Organ} = 	ext{Dermal Tissue} + 	ext{Ground Tissue} + 	ext{Vascular Tissue}$$

Question 11

Which of the following is a real-world application of aerenchyma tissue in plants?

Accepted Answer

Facilitating gas exchange in aquatic environments

Question 12

A cross-section of a celery petiole reveals cells with unevenly thickened walls, alive at maturity, and providing flexible support. Which tissue is this?

Accepted Answer

Collenchyma

Question 13

Which of the following best describes the main difference between xylary fibers and extraxylary fibers?

Accepted Answer

Xylary fibers are associated with xylem, while extraxylary fibers are found outside the xylem.

Question 14

Which of the following is NOT a function of parenchyma cells in plants?

Accepted Answer

Providing rigid structural support

Question 15

A plant breeder is interested in increasing the flexibility of plant stems for wind resistance. Which tissue should be targeted for enhancement?

Accepted Answer

Collenchyma

Question 16

Which of the following best explains why gelatinous fibers are important in tension wood of trees?

Accepted Answer

They provide extra flexibility and tensile strength to support leaning stems and branches.

Question 17

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

Accepted Answer

Collenchyma – flexible support

Question 18

Which of the following best describes the composition of the secondary cell wall in most plant fibers?

Accepted Answer

Mostly cellulose and some pectin, but no lignin

Question 19

Which of the following is a distinguishing feature of sclereids compared to fibers?

Accepted Answer

Sclereids are often isodiametric and may be star-shaped, while fibers are usually elongated.

Plant Simple Tissues: Structure, Types, and Functions

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