Transport System In Plants

Question 1

One of a pair of cells which change shape and control gaseous exchange by opening and closing stomata

Answer 1

Guard cells

Question 2

One of many tiny pores found mainly on the lower leaf surfaces of non-grasslike plants

Answer 2

Stoma

Question 3

Long extension of a root epidermal cell which presents a large surface area for water absorption

Answer 3

Root hair cells

Question 4

Non-living tissue containing hollow,lignified vessels responsible for support and water transport in a plant

Answer 4

Xylem

Question 5

Tough supporting material present as rings or spirals in xylem vessel walls

Answer 5

Lignin

Question 6

Loss of water by evaporation from the aerial parts of a plant

Answer 6

Transpiration

Question 7

Live tissue responsible for sugar transport in a plant and composed of sieve types and companion cells

Answer 7

Phloem

Question 8

Live component of phloem tissue which is controlled by a companion cell

Answer 8

Sieve tube

Question 9

Live component of phloem tissue possessing a nucleus which controls the workings of s sieve tube

Answer 9

Companion cells

Question 10

Apparatus used to measure rate of water uptake by a plant and approximate rate of transpiration

Answer 10

Potometer

Question 11

Branch of a leaf’s transport system containing xylem and phloem tissue

Answer 11

Leaf veins

Question 12

Layer of protective tissue on upper and lower surfaces of a leaf

Answer 12

Epidermis

Question 13

End wall of a sieve tube perforated with holes that allow continuity of cytoplasm from tube to tube

Answer 13

Sieve plate

Question 14

Tissue composed of green cells which comprise the plant’s principal site of photosynthesis

Answer 14

Mesophyll