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ACDS > BTNY M7 > Flashcards

BTNY M7 Flashcards

1
Q
  • A highly specialized shoot adapted to carry on sexual reproduction and the production of seeds.
    Its structure is an important means of identifying and classifying angiosperms.
A

Flower

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2
Q

The Structure of the Flower

The female organ of the flower
Usually found at the center of the flower. It consists of enlarge basal portion called the ovary

A

The Pistil

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3
Q

The Structure of the Flower

– attachment between the ovary wall and ovule

A

Funiculus

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4
Q

The Structure of the Flower

The male organ of a flower. Consists of two parts:
Anther – large terminal portion, contains cavities (pollen sacs)
Filament - stalk

A

The Stamen

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5
Q

The Structure of the Flower

The stamen and pistil are the essential parts a flower, they are usually surrounded by thin, expanded structures which collectively constitute the ____

A

perianth

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6
Q

The Structure of the Flower

Composed of a number of separate thin units.
Usually white or brightly colored.
More or less tubular, bell shaped, funnel shaped structure with lobes.

A

petal

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7
Q

The Structure of the Flower

Typically small and green.
To protect the inner parts of the flower before the flower bud has opened

A

sepal

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8
Q

The Structure of the Flower

is the flower stalk.

A

Peduncle

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9
Q

The Structure of the Flower

is the expanded terminal portion on which the other parts of the flowers are borne.

A

Torus/Receptacle

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10
Q

Position of the Ovary
– the sepals and petals are attached below the ovary. A flower with a ____is said to be hypogynous. E.g. Gumamela, kalamansi

A

Superior ovary

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11
Q

Position of the Ovary
– the sepals,petals are attached above the ovary . A flower with____is said to be epigynous. E. g. Guava, duhat

A

Inferior ovary

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12
Q

Position of the Ovary
– the pistil is in the bottom of a concave receptacle to the edges of which the sepal, stamen, and petal are attached. In such flower, the ovary may be superior or half inferior.

A

Perigynous flower

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13
Q

the places where the ovules are attached in the ovary are known ____

A

placentae.

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14
Q

The arrangement of the placentae inside the ovary is called ____

A

placentation.

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15
Q

Types of Placentation
– the placentae are located on the wall of a single ovary. A single ovary has one chamber or locule. (E.g. Sitao, batao, patani)

A

Marginal placentation

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16
Q

Types of Placentation
. – the placentae are found on the wall of a compound ovary. A compound ovary has two or more locule. (E.g. Patola, upo, pipino)

A

Parietal placentation

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17
Q

Types of Placentation
– is found in both simple and compound pistils, with one locule in the ovary and the ovules attached to the locule floor.

A

Basal placentation

18
Q

Types of Placentation
– the ovules are attached where the septa of a compound pistil are united in the middle of the ovary.

A

Axil placentation

19
Q

Types of Placentation
– in some ovaries of a compound pistils, there may be a single locule with a column of tissue sticking up in the center of the ovary bearing the ovules.

A

Free central placentation

20
Q

are clusters of flowers

A

Inflorescences

21
Q

Inflorescences
an infloresce with an elongated peduncle or axis. The are individual flowers are without stalks, and are said to be sessile.(Bottle brush)

A

Spike –

22
Q

Inflorescences
– elongated axis is unbranced. The flower s are provided with stalks or pedicels of equal lengths, and are called pedicellate flower (gladiola)

A

Raceme

23
Q

Inflorescences
– elongated axis is branched . Flowers arepedicellate, opening all the same time. (e.g.rice)

A

Panicle

24
Q

Inflorescences
the axis is short so that all the pedicellate flowers radiate from the apex of the axis.

A

Umbel –

25
Q

Inflorescences
– has a special type of spike which is hanging or dropping. The flowers are unisexual.

A

Catkin or ament

26
Q

Inflorescences
– a fleshy spike bearing both male and female flowers, surrounded by a petaloid bract called the spath

A

Spadix

27
Q

Inflorescences
– it has more or less flat or convex top because the pedicels bearing the outer, older flowers are longer than those at the center.

A

Corymb

28
Q

Inflorescences
similar to corymb except that the inner pedicel flowers open first

A

Cyme –

29
Q

Inflorescences
the pedicelled or sessile flowers are crowded at one side of the stem. (Birds of paradise)

A

Fascicle –

30
Q

Inflorescences
it is similar umbel but the flowers are sessile. Usually the flowers are of two kinds: the disc flowers at the center and the ray flowers at the margin

A

Head or capitate –

31
Q

Inflorescences
– a single flower at the end of the peduncle.

A

Solitary

32
Q

Inflorescences
– An inflorescence with the flowers in whorls at the node.

A

Verticil

33
Q

The Structure of the Ovule
– clear central parts of the ovule which contains the egg cells.

A

Embryo sac

34
Q

The Structure of the Ovule
the region around the embryo sac consisting of compact mass of thin walled cells is filled with dense protoplasm.

A

Nucellus –

35
Q

The Structure of the Ovule
– the portion of the base of the ovule to which the funiculus is attached.

A

Chalazes

36
Q

The Structure of the Ovule
– the two thin coverings of the ovule which arise from the base of the chalazes

A

Integuments

37
Q

The Structure of the Ovule
the large cell of the embryo sac attached toward the micropylar end.

A

The egg-

38
Q

The Structure of the Ovule
– the opening or small passage, at the tip of the ovules.

A

Micropyle

39
Q

The Structure of the Ovule
– the two smaller cells found at the sides of the egg.

A

Synergids

40
Q

The Structure of the Ovule
the three cells, in the embryo sac toward the chalazal end.

A

Antipodal cells –

ACDS (97 decks)

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