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Pharmacognosy > Flower > Flashcards

Flower Flashcards

1
Q

Most attractive part of the flowering plant

A

Flower

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2
Q

Four sets of parts of flowers

A

Sepals
Petals
Stamens
Pistils

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3
Q

Calyx

A

Collection of sepals

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4
Q

Chief function of sepals

A

Protection of flower

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5
Q

Gamosepalous

A

United sepals

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6
Q

Polysepalous

A

Not united sepals

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7
Q

Corolla

A

Collection of petals

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8
Q

Petals secrete

A

Nectar

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9
Q

Position normally occupied by petals

A

Between sepals and stamens

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10
Q

When do petals die

A

After fertilisation

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11
Q

Which is larger petals or sepals

A

Petals

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12
Q

Perianth

A

Sepals and petals together

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13
Q

Floral envelop

A

Sepals and petals, perianth

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14
Q

White flowers are

A

Wind pollinated

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15
Q

Texture of petals

A

Delicate

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16
Q

Androecium

A

Stamens collection

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17
Q

Parts of stamen

A

Anther and filament stalk

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18
Q

Anther

A

Sack like structure, contains pollen

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19
Q

Function of filament stalk

A

Connects anther to floral axis or some other parts

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20
Q

Male reproductive part of flower

A

Stamen

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21
Q

Gynoecium

A

Collection of pistils

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22
Q

Female reproductive part of flower

A

Pistil

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23
Q

Pistils position

A

Center

24
Q

Parts of pistil

A

Stigma, style, ovary

25
Q

Stigma

A

Pollen receptacle part at the summit, could be single, variously lobed or branched

26
Q

Style

A

Stalk like portion below stigma

27
Q

All pistils have style

A

No, in some they are lacking

28
Q

Ovary

A

Enlarged portion at base of pistil, containing one or more ovules or immature seeds

29
Q

Carpel

A

Basic unit of construction of the pistil….stigmastyleovary….a pistil may contain one or more carpels

30
Q

Apocarpous

A

Carpels are seperated

31
Q

Syncarpous

A

Carpels are joined

32
Q

Flower with all characteristic parts

A

Complete

33
Q

Flower with one or more of characteristic parts missing

A

Incomplete

34
Q

Flower lacking perianth

A

Naked

35
Q

Flower lacking petals

A

Apetalous

36
Q

Perfect flower

A

Flower with both stamens and pistils

Regardless of presence of other parts

37
Q

Hermaphrodite

A

Perfect flower

38
Q

Unisexual

A

Flower with only one kind of sexual organ

39
Q

Staminate

A

Flower with male unisex

40
Q

Pistillate

A

Flower with female unisex

41
Q

Monoecious

A

Having male and female gametangia on the same plant

42
Q

Dioecious

A

Flower having male and female organs on separate plants

43
Q

Regular

A

Flower may be divided into equal halves by a vertical plane

44
Q

Irregular

A

Flower with perianth parts of dissimilar size and shape

45
Q

Actinomorphic flower

A

Regular flower

46
Q

Zygomorphic flower

A

Irregular flower

47
Q

Hypogynous

A

Superior, corolla is attached below level of the ovary

48
Q

Perigynous

A

Sepals petals and stamens are inserted on the rim of shallow or deep saucer like structure known as hypanthium

49
Q

Epigynous

A

Inferior, single ovary which is beneath the flower parts

50
Q

Floral diagram

A

Representation of cross section of a flower as it would appear if all pars were at the same level, aerial view

51
Q

Monocot numerical plan

A

Three

52
Q

Numerical plan of dicots

A

Four or five

53
Q

Inflorescence

A

Group of flowers or a bunch

54
Q

Racemose

A

Flowers are produced in acropetal succesion

55
Q

Acropetal

A

The oldest flowers below and youngest above

56
Q

Capitulum

A

Modified head, flowers are so reduced so much such that they are called florets.

Pharmacognosy (4 decks)

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