Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biology > Anatomy Of Flowering Plants > Flashcards

Anatomy Of Flowering Plants Flashcards

1
Q

The outermost layer of dicotyledonous roots is called

A

Epiblema

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cells of epiblema are in the form of

A

Unicellular root hairs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The cortex of a dicotyledonous root consists of

A

Thin layers of parenchyma cells with intercellular spaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The inner most layer of cortex is called

A

Endodermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The endodermis comprises of

A

Single layer barrel shaped cells with NO intercellular spaces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Endodermal cells have a deposition of

A

Casparian strips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Properties of casparian strips

A

1.Waxy material suberin
2. Water impermeable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Thick walled paremchymatous cells next to endodermis

A

Pericycle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens in the pericycle ?

A

Initiation of lateral roots and vascular cambium during secondary growth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Paremchymatous cells that lie between the xylem and the phloem are called

A

Conjuctive tissue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What constitutes the stele?

A

All tissues on the innerside of endodermis.

( pericycle, vascular bundles and pith)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where does the cambium ring develop

A

Between xylem and phloem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many xylem and phloem patches are there in the dicotyledonous root

A

2 to 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How is the pith of dicotyledonous root different from that of a monocotyledonous root ?

A

Dicot pith is small, monocot pith is large and well developed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How many xylem bundles do monocot roots have

A

6 xylem bundles ( polyarch)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Do monocots undergo secondary growth ?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Outermost protective layer of a dicot stem

A

Epidermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A dicot stem bears ____?

A
  1. Thin layer of cuticle
  2. Trichomes
  3. Few stomata
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What constitutes the cortex in a dicot stem

A

Layers of cells between epidermis and pericycle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Sub zones of cortex in a dicot stem

A
  1. Hypodermis
  2. Cortical layers
  3. Endodermis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Properties of hypodermis

A
  1. Below epidermis
  2. Collenchymatous cells
  3. Provide mechanical strength to young stem.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Which cells provide mechanical support to the young stem

A

Collenchymatous cells from hypodermis of the cortex.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Cortical layer of the cortex consist of

A

Rounded thin walled parenchymatous cells with intercellular spaces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Properties of endodermis of dicot stem

A

Rich in starch grains.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Which layer of cells is referred to as starch sheath

A

Cells of endodermis.

26
Q

Pericycle of the dicot stem is present in the form of

A

Semi lunar patches of sclerenchyma.

27
Q

What constitutes the medullary rays in the divot stem ?

A

Radial paremchyma cells between the vascular bundles.

28
Q

How are vascular bundles characterised in a dicot stem ?

A

1.Ring arrangement
2.Conjoint
3.Open
4.Endarxh protoxylem

29
Q

How are the vascular bundles of a monocot stem characterised

A

1.Scattered
2.conjoint
3. Closed
4.surrounded by sclerenchymatous sheath and large paremchymatous ground tissue.

30
Q

What is absent in monocot stem

A

Phloem parenchyma

31
Q

Where are the water containing cavities present in a monocot stem

A

Vascular bundles.

32
Q

How are peripheral vascular bundles different from the central ones

A

Peripheral ones are smaller.

33
Q

Dicotyledonous leaves are also called

A

Dorsiventral leaves

34
Q

3 main parts of a dicot leaf

A

1.Epidermis
2.mesophyll
3. Vascular system

35
Q

Epidermis on upper and lower surface of the leaves are called

A

Upper surface - adaxial epidermis
Lower surface - abaxial epidermis

36
Q

Major difference between adaxial and abaxial epidermis

A

Abaxial bears more stomata
Adaxial may even lack stomata

37
Q

Tissue between the upper and lower epidermis is called

A

Mesophyll

38
Q

Properties of mesophyll

A

Possess chloroplast
Carries put photosynthesis
Made of parenchyma

39
Q

Type of mesophyll cells

A

Palaside parenchyma
Spongy parenchyma

40
Q

Palaside parenchyma characteristics

A

Adaxially placed
Elongated cells
Arranged vertically and parallelly

41
Q

Characteristics of spongy parenchyma

A
  1. Oval / round
  2. Loosely arranged
  3. Below palaside cells
  4. Extends to lower epidermis
42
Q

The vascular bundles in a dicot leaf are surrounded by

A

Thick walled bundle sheath cells

43
Q

Monocot leaves are called

A

Isobilateral

44
Q

How is the anatomy of isobilateral leaf different from that of dorsiventral leaf

A

Isobilateral - stomata present on both epidermal surfaces, mesophyll is not differentiated.

45
Q

What are bulliform cells

A

Modified cells of the adaxial epidermis

46
Q

Bulliform cells are found in

A

Grasses

47
Q

Properties of bulliform cells

A

Large, empty and colourless

48
Q

Purpose of bulliform cells

A

1.Absorb water so the leaves become turgid and expose the surface.
2. Make the leaves curl inward to minimise water loss when they are flaccid due to water stress.

49
Q

What is primary growth?

A

Growth of root and stems in length with help of apical meristem.

50
Q

What is secondary growth

A

Increase in girth while growing

51
Q

Tissues involved in secondary growth

A

Two lateral meristems :
1. Vascular cambium
2. Cork cambium

52
Q

What is the vascular cambium

A

Meristematic layer that is responsible for cutting off vascular tissues.

53
Q

Orientation of vascular cambium

A

Young stem- single layer, in patches
Later - complete ring

54
Q

Cells of cambium present between primary xylem and primary phloem

A

Intrafascicular cambium

55
Q

What forms the interfascicular cambium ?

A

Cells of medullary rays adjoining intrafascicular cambium

56
Q

Activity of cambium ring

A

Cut off new cells towards both, inner and outer sides.

57
Q

Cells that are cut off towards the pith form

A

Secondary xylem

58
Q

Cell that are cut off towards the periphery

A

Secondary phloem

59
Q

Which side of the cambium is generally more active

A

Inner side

60
Q

Due to more activity of cambium on the inner side

A

Amount of secondary xylem is more than phloem

61
Q

What are secondary medullary rays

A

Parenchyma cells that radially pass through secondary xylem and phloem.

Biology (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions