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Biology > Sexual Reproduction In Flowering Plants > Flashcards

Sexual Reproduction In Flowering Plants Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

The long and slender stock called

A

Filament

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2
Q

The terminally generally bilobed structure called

A

Anther

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3
Q

The proximal end of the filament is attached to the

A

Thalamus or the petal of the flower

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4
Q

A typical angiosperm answer is

A

Bilobed with each lobe, having too Theca

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5
Q

How many sides are there in an anther

A

Four sides, tetragonal

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6
Q

How are these two theca are separated?

A

By longitudinal groove

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7
Q

How many microsporangia are there in an anther ?

A

4

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8
Q

These microsporangia developed into

A

Pollen sacs

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9
Q

What are the four walls of an microsporangium?

A

Epidermis endothecium , middle layer, Tapetum

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10
Q

The outer three layers of the microsporangium helps in

A

Dehiscence and protection

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11
Q

Which layer provides the nourishment to the pollen grains?

A

Tapetum

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12
Q

The dense cytoplasm of tapetum contains more than one

A

Nucleus

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13
Q

When an anther is Young, a group of compact cells are called

A

Sporogenous tissue

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14
Q

Some of the sporogenous tissue are capable to go under meiotic division are called

A

Pollen Mother cell diploid

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15
Q

After the meiosis of pollen Mother cell, how many cell will form?

A

There will be four cell, which will be call micropore tetrad

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16
Q

What is the ploidy level of microspore tetra?

A

Haploid

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17
Q

The formation of micropore through pollen mother cells

A

Micro sporogenesis

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18
Q

60% angiosperm does their 2nd mitosis

A

After pollination

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19
Q

What is the diameter of pollen grain?

A

25 to 50 micrometer

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20
Q

The outer layer of an pollen grain is made up of what?

A

Sporopolleninn

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21
Q

Wherever The sporopollenin is absent

A

There is germ pore

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22
Q

The inner most layer of an pollen grain is made up of

A

Cellulose
and pectin

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23
Q

The pollen viability of some cereals or rice and wheat

A

30 minutes

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24
Q

The member of rosacea leguminoseam and solanaceae

A

Months

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25
Q

Where to Store pollen grains grains for years

A

Liquid nitrogen in -1 96°C

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26
Q

How does Ovule attach? In ovary

A

Through placenta

27
Q

One Ovule examples

A

Wheat paddy Mango

28
Q

Many ovules examples

A

Papaya, watermelon orchid

29
Q

In an multicarpellary the fused ones are called and the example

A

Syncarpous papver

30
Q

If the multicarpellary is free then it is called and the example

A

Apocarpous micheliea

31
Q

Ovule is small structure attached to placenta by means of

A

Funicle

32
Q

The point of attachment of funicle and ovule

A

Hilum

33
Q

Each ovule i has one or two protective envelope

A

Integuments

34
Q

Enclosed within integuments mass of cell is called

A

Nucellus abundant food reserve

35
Q

Integuments enCircle, nucellus , except at tip, small opening is called

A

Micropyle

36
Q

The opposite of micropylar end is called

A

Chalazal end

37
Q

Single functional megaspore goes into how many mitosis

A

3

38
Q

How many nucleus will be there in single megaspore after 3mitosis

A

8 nucleus

39
Q

A typical angiospermic embryo sack has

A

7celled and 8nucleated

40
Q

The transfer of pollen grain from same flower anther to stigma

A

Autogamy

41
Q

Example of the flowers, which shows autogamy

A

Voila oxalis commelina

42
Q

Transfer of pollen grain from anther to stigma to another flower of the same plant

A

Geitonogamy genetically similar to autogamy

43
Q

Water pollination is limited to how many genera monocotyledons

A

30

44
Q

Examples of water pollination in fresh water and marine water

A

Vallisneria hydrilla fresh water
Zoestra marine sea grass

45
Q

Which flower emerges above water level

A

Water Lilly

46
Q

Special floral reward safe place to lay egg name the flower

A

Amorphophallus

47
Q

2 polar nuclei and male gamete forms

A

Primary endosperm cell

48
Q

Endosperm ploidy level

A

3n

49
Q

Who develops first zygote or endosperm

A

Endosperm

50
Q

Coconut water is ?

A

Free nuclear endosperm

51
Q

The edible part of coconut is

A

Cellular endosperm

52
Q

Zygote gives rise to which form

A

Pro-embryo globular heart and then mature embryo

53
Q

The cylindrical portion of below level of cotyledons

A

Hypcotyl

54
Q

In grass family the cotyledon is called

A

Scutellum

55
Q

In monocot embryo radicle and root tip is covered by undifferentiated sheath called

A

Coleorhiza

56
Q

A typical seed consist of

A

Seed coat cotyledon and an embryo axis

57
Q

No residue endosperm seeds r called

A

Non albuminous pea bean groundnut

58
Q

In some seeds some nucellus is remained

A

Perisperm black pepper beet

59
Q

Which forms the harden as tough protective seed coat

A

Integuments

60
Q

The wall of ovary develops into walls of fruit called

A

Pericarp

61
Q

True fruit example

A

Mango

62
Q

Thalamus contributes in fruit formation Pray tell, what kind of fruit it is called

A

False fruits

63
Q

Fruits develop without fertilisation is called

A

Parthenocarpic fruits

64
Q

It is a type of asexual reproduction, which mimic sexual reproduction seeds are produced without fertilisation

A

Apomixis

Biology (3 decks)

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