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BOTANY > LESSON 2 > Flashcards

LESSON 2 Flashcards

1
Q

composed of outer covering of the plant

A

Dermal Tissue system

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2
Q
  • Are external skin layer of the plant which extend all over the entire surface of body.
  • Consisting single layer flattened cells
A

Epidermis

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3
Q

These are the flattened cells that can be seen in epidermis

A

Straight Walled
Wavey Walled
Beaded Walled

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4
Q

Functions of Epidermis

A
  1. Protection of internal tissue from mechanical injuries
  2. Prevention of excessive evaporation of water
  3. Protects them from excessive radiation of heat from the sun
  4. It acts as store house of water.
  5. It has minor function in photosyntheis and secretion
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5
Q

Structures found in Epidermis layer

A

Stomata
Trichomes

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6
Q

Functions of stomata

A

they perform gaseous exchange and transpiration

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7
Q

Types of Stomata arrangement

A
  1. Diacytic (caryophylaceous)
  2. Anisocytic (cruciferous)
  3. Anomocytic (irregular)
    5.Paracytic (parallel)
  4. Actinocytic (radiated)
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8
Q

accompanied by 2 subsidiary cells

A

Diacytic

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9
Q

there is an equal cells accompanied by 3 subsidiary cells.

A

Anisocytic

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10
Q

stoma is surrounded by varying number of subsidiary cells.

A

Anomocytic

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11
Q

stoma is surrounded by 2 subsidiary cells the long access of which are parallel to that of the stoma.

A

Paracytic

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12
Q

the stoma is surrounded by circles of radiating cells.

A

Actinocytic

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13
Q

2 types of dermal tissue system

A

Epidermis
Periderm

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14
Q

they are manute openings usually found in epidermis of the leaves, flowers and fruits of the plants.

A

Stomata

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15
Q

they are elongated out growth of one or more epidermal cells found on the leaves sometimes on the stems for protection.

A

Trichomes

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16
Q

Functions of trichomes

A

to prevent the clogging of the stomata due to dust accumulation

17
Q

Types of Trichomes

A

Clothing hairs
Glandular trichomes

18
Q

this is the layer immediate below epidermis it consist of 3 kinds of cells _____, _____, and ______.

A

Periderm
Phellen cells
Phellogen cells
Phelloderm cells

19
Q

they are consist of vascular bundles which are distributed in the stele, and the central cylinder of the stem surrounded by the epidermis and each bundle is made up of _______ and ______.

A

Vascular Tissue System
Xylem and Phloem

20
Q

made up of xylem, phloem and cambium

A

stele

21
Q

represented by the cortex, hypodermis, pith, mesophyll, portion of the midrid of the leaves

A

Ground Tissue System

22
Q

ground tissue system is made up of:

A

Parenchyma
Collenchyma
Scelerenchyma

23
Q

this is a collection of cells whose main function is for storage of food materials

A

parenchyma

24
Q

storage of air inside the parenchyma

A

aerenchyma

25
Q
  • flexible in nature it gives stencil strength to the growing organs in being extensible
  • use to manufacture sugar and starch.
A

collenchyma

26
Q
  • consist of very long narrow thick lignified cells usually pointed at both ends.
  • they give strength, rigidity, flexibility, and elasticity to the plant body enabling them to withstand various strains.
A

sclerenchyma

27
Q

cell content found in plants:

A

starch
protein
cacium oxalate crystals
mucilage

28
Q

they are polysaccharides containing amylopectin and the meta amylose

A

starch

29
Q

responsible for viscosity of starch

A

amylopectin

30
Q

they are usually found abundantly in the endosperm of most seeds.

A

protein

31
Q

they are excretory products of plant metabolism

A

calcium oxalate crystals

32
Q

these are the polysaccharides complexes of sugar and uronic acid usually formed from the cell walls of the plants

A

mucilage

33
Q

function of xylem and phloem

A

Xylem transports and stores water and water-soluble nutrients in vascular plants. Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants

BOTANY (6 decks)

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