Roots

Question 0

similarly sized roots; arise when radicle dies during or immediately after germination

Answer 0

Fibrous Root

Question 1

Enumerate 3 functions of Root System

Answer 1

1. Anchorage
2. Absorption of water and minerals
3. Production of hormones
   (cytokinin and gibberrelin)

Question 2

Hypocotyl:

Answer 2

Cotyledons, Root hairs, radicle

Question 3

zone of root cap which detects gravity and contains starch

Answer 3

columella

Question 4

arise from epidermis; single celled; increases absorptive area

Answer 4

Root hairs

Question 5

2 zones of root cap

Answer 5

Peripheral

columella

Question 6

arise from main stem or trunk

Answer 6

Brace root

Question 7

smaller and arise from tap root; multicellular; responsible for second growth for dicot

Answer 7

Lateral or branch roots

Question 8

increases the absorptive and transport capacity of the roots.

Answer 8

Adventitious

Question 9

the growing portion in length occur, which is protected by the root cap.

Answer 9

root tip

Question 10

3 fnx of root cap

Answer 10

1. Protects the root apical
2. Produces mucigel
3. for positive geotrophism

Question 11

lubricates the passage of root through the soil

Answer 11

mucigel

Question 12

contractile roots of bulbs like onions, gladiolus, garlic

Answer 12

Movement

Question 13

Enumerate the 3 types of Root System

Answer 13

1. Tap root
2. Fibrous root
3. Adventitious

Question 14

arise from lateral branches

Answer 14

. Prop root

Question 15

zone of root cap which protect and is composed of dead cells

Answer 15

Peripheral

Question 17

diffusion through intercellular spaces

Answer 17

Apoplastic

Question 18

mitotically inactive region of the root apical meristem; act as reserve of healthy cells ; resistant to toxic substances and radiations.

Answer 18

Quiescent center

Question 19

causes the soil to release nutrient ions and permits diffusion to the roots

Answer 19

Root cap

Question 20

zone where Root hairs grows outward and the most significant activity is the
transfer of mineral from the
epidermis to the vascular
bundle

Answer 20

Zone of maturation

Question 21

modified roots that provide support

Answer 21

Brace, Prop, Clinging, Buttress

Question 22

specialized roots that is for water retention

Answer 22

Velamen in aeria roots of orchids

Question 23

Stele or Vascular Cylinder: consists of: (4)

Answer 23

Pericycle
Primary phloem
vascular cambium
primary xylem

Question 24

site of lateral root growth

Answer 24

Pericycle

Question 25

layer before the stele of the root | controls the passage of minerals accross V. tissues

Answer 25

Endodermis

Question 26

Type of Stele

Answer 26

Protostele - dicot (w/o pith) | Siphonostele - monocot (w/ pith)

Question 27

Endodermis consists of:

Answer 27

1. thick walled cells (suberin and lignin) | 2. Passage cells

Question 29

zone in root tip where cells begin to differentiate into visible pattern and where there is no cell maturation happening

Answer 29

Zone of elongation

Question 30

after ___ tap root becomes the largest root in the system

Answer 30

germination

Question 32

shows outer zone of collenchyma middle zone of parenchyma and innermost endodermis

Answer 32

CORTEX

Question 33

Type of stele which is a band of vascular tissues surroundinig a parenchymatous pith

Answer 33

Siphonostele

Question 34

modified roots that is for aeration

Answer 34

Pneumatophores

Question 35

diffusion through plasma membrane and enters the protoplasm (osmosis)

Answer 35

Symplastic

Question 36

where does tap root develop in the embryonic root ?

Answer 36

radicle

Question 38

Zone which is protected by thick layer of cell | Rapidly dividing cell

Answer 38

Zone of Cell Division

Question 38

Pith is present

Answer 38

Monocot

Question 38

it destroys the cells of the cortex and epidermis that lie in its path

Answer 38

lateral root

Question 39

Specialized roots for absorption

Answer 39

Parasitic (haustorial roots)

Question 40

modified roots that is photosynthetic

Answer 40

Green aerial root

Question 40

modified roots that provide food storage

Answer 40

Enlarged, fleshy, succulent root

Question 41

Largest region is cortex (monocot or dicot)

Answer 41

MOnocot

Question 41

Specialized roots for photosynthesis

Answer 41

Chlorophyllous roots

Question 42

association between a soil fungus and roots

Answer 42

Mycorrhizae

Question 43

expanded roots for great support, upper side grows faster than the lower side.

Answer 43

Buttress

Question 44

examples of Enlarged fleshy tap root

Answer 44

carrots, ube, tugue, radish, turnips