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Botany > SRP (ncert Only) > Flashcards

SRP (ncert Only) Flashcards

1
Q

Ex. Of Multicarpellary syncarpous gynoecium

A

In Papaver

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2
Q

Ex. Of multicarpellary apocarpous gynoecium

A

In Michelia

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3
Q

Pollen allergy is caused by

A

Parthenium aka carrot grass

Came to India as contaminant with imported wheat.

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4
Q

Period for which pollen grains remain viable depends on

A

Prevailing temperature

Humidity

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5
Q

Viability period of pollen grains in rice & wheat is

A

30 minutes

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6
Q

Pollen viability is for months , in

A

Rosacea
Leguminoseae/fabacea (earlier c/d papileonoidae)
Solanaceae

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7
Q

Egs of plant having 1 ovule in ovary

A

Wheat
Paddy
Mango

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8
Q

Example of plants having more than 1 ovule in a ovary

A

Papaya
Watermelon
Orchids

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9
Q

Egg apparatus =

A

2 synergids & 1 egg cell at micropylar end.

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10
Q

Plants that produce both cleistogamous as well as chasmogamous flowers are

A

Commelina
Oxalis
Viola (common pansy)

COV

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11
Q

Autogamy occurs in

A

Commelina
Oxalis
Viola (common pansy)

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12
Q

Geitonogamy is seen in

A

Maize

Castor

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13
Q

Xenogamy is seen in

A

Papaya.

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14
Q

______ is functioning cross-pollination but genetically similar to autogamy.

A

Geitonogamy

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15
Q

_____ is the only type of pollination that brings genetically different types of pollen grains.

A

Xenogammy

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16
Q

____ flowers are invariably autogamous (no chance of cross-pollination).

A

Cleistogamous

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17
Q

Characteristics of plants that show Pollination by wind

A 
Light & non-sticky pollen grains 
Well exposed stamens 
Large & feathery stigma
Often single ovule in ovary
Numerous flowers packed into an inflorescence
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18
Q

Corn cab shows pollination by

A

Wind

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19
Q

Pollination by water is quite rare, limited to only 30 genera, mostly monocots.
T/F

A

True .

Though its common in lower grps like algae, bryophytes & pteridophyte.

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20
Q

Examples of water pollinated fresh water plants

A

Vallisneria

Hydrilla

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21
Q

Example of water pollinated marine plants

A

Zostera ( a marine sea grass)

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22
Q

In majority of aquatic plants like water hyacinth & water lily pollination occurs by

A

Insects or wind.

23
Q

In ________ , male flowers reach surface & release pollen grains onto the surface.
In _______, male flowers remain submerged & p/gs are released inside water.

A 
Vellisneria = onto the surface 
Zostera = inside the surface
24
Q

___&___ are usual floral rewards for pollinators.

A

Nectar

Pollen grains

25
Q

Common insect pollinators are

A 
Bats
Bees
Butterflies 
Flies
Wasps
Ants
Moths
Birds ( hummingbird & sunbirds )
26
Q

Flowers pollinated by ___&____ secrete foul odour to attract animals.

A

Flies & beetles.

27
Q

Primate like lemur
Reptile like gecko lizard & garden lizard
Aboreal (tree dwelling) rodents
Are also pollinators.

T/F

A

True.

28
Q

Tallest flower is

A

Amorphophallous ( 6 feet tall)

29
Q

Examples of plant where Reward of pollination is providing safe places to pollinators .

A

Amorphophallous

Species of moth & yucca

30
Q

Castor & maize are

A

Monoecious plants (bisexual)

31
Q

Papaya is

A

Dioecious plant

32
Q

Outbreeding devices include

A

Asynchronous pollen release & stigma receptivity.
Different positions of anther & stigma
Self-incompatibility
Production of unisexual flowers

33
Q

Porogamy is

A

Entry if pollen tube through micropylar end.

34
Q

Events from pollen deposition to entry of pollen tube are together referred as

A

Pollen-pistil interaction

35
Q

No need of emasculation in

A

Wheat.

If parent plant produces unisexual flowers.

36
Q

Central cell after triple fusion becomes

A

PEC (prima endosperm cell) & develops into endosperm while zygote develops into an embryo.

37
Q

Coconut water is

A

Free nuclear endosperm (m/o 1000’s of nuclei)

38
Q

Kernel of coconut is

A

Cellular endosperm

39
Q

Endosperm is completely consumed by developing embryo in

A

Pea
Groundnut
Beans

Aka exalbuminous seeds
Aka non-albuminous seeds

40
Q

Persistent endosperm is found in

A

Castor
Coconut

Albuminous seeds

41
Q

Cotyledon in grass family is k/a

A

Scutellum

Embryo of monocots mei scutellum is Situated twrds one side (lateral) of embryonal axis

42
Q

Remains of 2nd cotyledon occur in some grasses c/d

A

Epiblast

43
Q

Oldest viable seed is of

A

Lupine ( Lupinus arcticus) excavated from arctic tundra. Seed germinated & flowered after an estimated record of “10K yrs “ of dormancy.

44
Q

2000 yr old yet viable seed is of

A

Date palm (phoenix dactylifera)

Discovered during archeological excavation at King Herod’s palace

45
Q

Examples of Large no. Of seeds in a fruit

A

Orchid fruits

Some parasitic species like Orobanche & striga

46
Q

Fleshy fruits examples

A

Guava
Orange
Mango

47
Q

False fruits

A

Apple
Strawberry
Cashew

48
Q

Dry fruits

A

Groundnut

Mustard

49
Q

Persistent nucellus is called

A

Perisperm

50
Q

Perisperm exists in

A

Black pepper & beet

51
Q

Polyembryony is common in

A

Many citrus & mango

52
Q

Fruit production without fertilisation is called

A

Parthenocarpy.

Ex. Banana

53
Q

Seed production without fertilisation is called

A

Apomixis

Botany (13 decks)

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