morphology of flowering plants

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141 Terms

1

the direct elongation of radicle forms the

primary root

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2

primary roots and its branches constitutes the

tap root system

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3

ex of tap root system

mustard

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4

primary root is short lived and replaced by large no of roots

fibrous root system

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5

ex of fibrous root system

wheat

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6

roots arises from parts other than the the radicle

adventitious root system

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7

ex of adventitious root

grass, banyan, monstera

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8

which plant organ stores reserve food materials

roots

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9

which plant organ synthesizes plant growth regulators

roots

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10
term image

tap root system

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11
term image

fibrous root system

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12
term image

adventitious root system

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13

The root is covered at the apex by a thimble-like structure called the

root cap

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14

The cells of this region are very small, thin-walled and with dense protoplasm. They divide repeatedly.

meristematic region

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15

A few millimetres above the root cap is the

meristematic region

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16

The cells proximal to meristematic region undergo rapid elongation and enlargement and are responsible for the growth of the root.

elongation region

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17

The cells of the this zone gradually differentiate and mature

elongation region

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18

proximal to region of elongation, is called the

maturation region

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19

root hair cells are formed from which type of cell

epidermal cell

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20

which zone has root hair cells

maturation region

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21

which plant organ bears nodes and internodes

stem

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22

region on stem where leaves are borne

nodes

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23

region between two successive points at which leaves are borne

internode

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24

the ______ later develops into branch

axillary bud

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25

which plant organ originates from shoot apical meristem

leaves

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26

leaves arranged on stem in

acropetal order

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27

the leaf is attached to the stem by

leaf base

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28

leaf may bear two lateral small leaf like structures called

stipules

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29

in which type of plants, tap root system is generally seen

dicots

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30

in which type of plants, fibrous root system is seen

monocots

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31

in which type of plants, the leaf base expands into a sheath covering the stem partially or wholly

monocots

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32

the leafbase may become swollen, which is called the

pulvinus

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33

which family of plants have pulvinus

legume

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34

which part holds the leaf to light

petiole

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35

Which part of the leaf has veins and veinlets

lamina

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36

the arrangement of vein and veinlets in the lamina of leaf is termed as

venation

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37

when the veinlets form a network is it called

reticulate venation

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38

when the veins run parallel to each other

parallel venation

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39

when lamina is entire or when incised, but incision do not touch the midrib

simple leaf

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40

When the incisions of the lamina reach up to the midrib

compound leaf

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41

____ is present on the axil of petiole in both leaves simple as well as compound but not in the axil of leaflet

bud

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42

number of leaflets are present on a common axis, the rachis, which represents the midrib of the leaf

pinnately compound leaf

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43

the leaflets are attached at a common point, i.e., at the tip of petiole

palmately compound leaf

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44
<p>type of leaf</p>

type of leaf

pinnately compound leaf

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45
<p>type of leaf</p>

type of leaf

palmately compound leaf

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46

ex of pinnately compound leaf

neem

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47

ex of palmately compound leaf

silk cotton

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48

pattern of arrangement of leaves on the stem or branch

phyllotaxy

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49

ex of alternate phyllotaxy

china rose, mustard, sunflower

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50

ex of opposite phyllotaxy

calotropis and guava

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51

ex of whorled phyllotaxy

alstonia

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52
<p>which type of phyllotaxy is this</p>

which type of phyllotaxy is this

alternate

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53
<p>which type of phyllotaxy is this</p>

which type of phyllotaxy is this

opposite

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54
<p>which type of phyllotaxy is this</p>

which type of phyllotaxy is this

whorled

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55

When a shoot tip transforms into a flower, it is always

solitary

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56

the main axis continues to grow, the flowers are borne laterally in an acropetal succession

racemose

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57

the main axis terminates in a flower, hence is limited in growth.The flowers are borne in a basipetal order

cymose

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58
<p>Type of inflorescence</p>

Type of inflorescence

racemose

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59
<p>type of inflorescence</p>

type of inflorescence

cymose

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60

A typical flower has four different kinds of whorls arranged successively on the swollen end of the stalk or pedicel, called

thalamus

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61

receptacle aka

thalamus

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62

ex of perianth

lily

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63

When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it is said to be

actinomorphic

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64

ex of actinomorphic

mustard, datura, chilli

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65

When the flower can be divided into two similar halves only in one particular vertical plane, it is

zygomorphic

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66

ex of zygomorphic

pea, gulmohur, bean, cassia

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67

if the flower cannot be divided into two similar halves by any vertical plane passing through the centre

asymmetric

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68

ex of asymmetric

canna

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69

the gynoecium occupies the highest position while the other parts are situated below it.

hypogynous

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70

ex of hypogyous

mustard, china rose, brinjal

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71

If gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level

perigynous

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72

ex of perigynous

plum, rose, peach

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73

the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary

epigynous

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74

ex of epigynous

guava, cucumber, ray floret sunflower

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75
<p>type of ovary</p>

type of ovary

hypogynous

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76
<p>type of ovary</p>

type of ovary

perigynous

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77
<p>type of ovary</p>

type of ovary

perigynous

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78
<p>type of ovary</p>

type of ovary

epigynous

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79

The mode of arrangement of sepals or petals in floral bud with respect to the other members of the same whorl is known as

aestivation

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80

When sepals or petals in a whorl just touch one another at the margin, without overlapping

valvate

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81

ex of valvate

calotropis

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82

If one margin of the appendage overlaps that of the next one and so on

twisted

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83

ex of twisted

china rose, lady finger, cotton

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84

If the margins of sepals or petals overlap one another but not in any particular direction

imbricate

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85

ex of imbricate

cassia, gulmohur

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86

the largest (standard) overlaps the two lateral petals (wings) which in turn overlap the two smallest anterior petals (keel); this type of aestivation is known as

vexillary

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87

ex of vexillary

pea, bean

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88

in vexillary aestivation, the largest petal is known as

standard

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89

in vexillary aestivation, the lateral petals are known as

wings

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90

in vexillary aestivation, smallest anterior petal is known as

keel

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91

A sterile stamen is called

staminode

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92

When stamens are attached to the petals, they are

epipetalous

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93

ex of epipetalous

brinjal

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94

stamen attached to the perianth

epiphyllous

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95

ex of epiphyllous

lily

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96

stamen united in one bundle

monadelphous

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97

ex of monadelphous

china rose

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98

stamen united in two bundle

diadelphous

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99

ex of diadelphous

pea

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100

stamen united in many bundle

polyadelphous

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