Diversity of Plant Life MCQs Part 10

1) The monocot leaf showing reticulate venation is
a) Calophyllum
b) Smilax
c) Maize
d) Cocos

2) In which of the following is the leaf lamina generally reduced?
a) Hydrophytes
b) Mesophytes
c) Epiphytes
d) Xerophytes

3) Among the following, finely dissected leaves are common in
a) Submerged plants
b) Free floating plants
c) Emerged plants
d) Rooted floating plants

4) The plant that stores food reserves in its leaves is
a) Mango
b) Sweet potato
c) Onion
d) Sugarcane

5) The arrangement of leaves on a branch is called
a) Venation
b) Vernation
c) Phyllotaxy
d) Ptyxis

6) The term phyllotaxy is used to describe the
a) Type of ovary in a plant
b) Mode of arrangement of leaves on the stem
c) Type of roots
d) Arrangement of sepals and petals in a flower

7) In Nepenthes, the pitcher is formed from the
a) Stipule
b) Leaf base
c) Lamina
d) Leaf apex

8) In which of the following plants is a unifoliate compound leaf found?
a) Salvia
b) Lemon
c) Mango
d) Caesalpinia

9) A tricompound leaf is present in
a) Acacia
b) Dolichos
c) Citrus
d) Moringa

10) The distinguishing character of an imparipinnate leaf is that the
a) Rachis is strong
b) Leaflets are large
c) Rachis is terminated by an unpaired odd leaflet
d) All leaflets are borne in pairs

11) When the petiole is modified into a leafy green structure, this structure is known as a
a) Clodode
b) Phyllode
c) Phylloclade
d) True leaf

12) Bignonia is the best example of a
a) Hook climber
b) Twiner
c) Tendril climber
d) Thorn climber

13) Which of the following is a modification of the leaf?
a) Cladode
b) Phyllode
c) Corm
d) Phylloclade

14) A phylloclade is derived from the
a) Stem
b) Leaflet
c) Stipules
d) Leaves

15) Parkinsonia is a good example of a
a) Winged fruit
b) Parachute mechanism
c) Parachute mechanism
d) Phyllode

16) In which of the following plants does vegetative reproduction take place with the help of bulbils?
a) Pistia
b) Colocasia
c) Zingiber
d) Agave

17) Artabotrys is a hook climber in which the hooks are modified
a) Inflorescences
b) Petioles
c) Roots
d) Stipules

18) Ochraceous stipules are found in
a) Rosa
b) Lathyrus
c) Polygonum
d) Gardenia

19) The bud scales of Ficus represent
a) Bracts
b) Young leaves of buds
c) Stipules
d) First leaf of a bud

20) Petioles called ‘floats’ are found in
a) Nymphaea
b) Hydrilla
c) Eichhornia
d) Citrus

21) Root hairs are completely absent in
a) Xerophytic roots
b) Mesophytic roots
c) Mycorrhizal roots
d) Aquatic plants

22) Which of these is a pseudoepiphyte?
a) Cuscuta
b) Philodendron
c) Vanda
d) Tinospora

23) Buttress roots are found in
a) Tall temperate trees
b) Tall tropical trees
c) Tall tropical grasses
d) Short temperate trees

24) In Phyllanthus, dwarf branches are present which look like
a) Simple compound leaves
b) Pinnately compound leaves
c) Palmately compound leaves
d) Decompound leaves

25) Whorled leaves occur in
a) Mango
b) Hibiscus
c) Calotropis
d) Nerium

26) When the older leaves or the whole plant turns yellowish green, it could be because the
a) Soil is deficient in nitrogen
b) Soil is deficient in carbohydrates
c) Vitamin C is required
d) Hormones are required

27) Plants which complete their life cycle within one year are called
a) Annuals
b) Seasonal
c) Lianas
d) Ephemerals

28) Which of the following plants produce fruits only once in their life time?
a) Monocarpic
b) Polycarpic
c) Dicarpic
d) Tetracarpic

29) The main difference between biennials and perennials is that the perennials
a) Invariably show asexual reproductive structures
b) Do not die after the seasonal production of fruits
c) Always have underground perennating structures
d) Are tree species

30) Roots develop from the
a) Plumule
b) Radicle
c) Stem
d) Leaf

31) The maximum growth in roots occurs
a) At the tip
b) In the presence of light
c) Behind the apex
d) Towards darkness

32) The prop roots of a banyan tree are meant for
a) Providing support for the big size of the tree
b) The retention of water in soil
c) Absorption of water from the soil
d) Absorption of air from the atmosphere

33) Haustoria of Cuscuta are
a) Velamen roots
b) Parasitic roots
c) Climbing roots
d) Stilt roots

34) Breathing roots are found in
a) Vanda
b) Pista
c) Avicennia
d) Striga

35) Velamen, the spongy tissue, is present in
a) Breathing roots
b) Parasitic roots
c) Tuberous roots
d) Epiphytic roots

36) The function of a stem is
a) Storage
b) To produce branches and leaves
c) Conduction
d) All the above

37) Buds that give rise to leafy shoots are
a) Adventitious buds
b) Vegetative buds
c) Reproductive buds
d) Radical buds

38) Accessory buds develop
a) At the apex of the branch
b) By the side of the axillary bud
c) At the apex of the stem
d) In the axil of a leaf

39) The food stored in aroids is within the
a) Enlarged roots
b) Inflorescence
c) Swollen stem
d) Swollen leaf bases

40) In which of the following plants does the stem perform the function of storage and perennation?
a) Groundnut
b) Ginger
c) Wheat
d) Radish

41) The stem is extremely enlarged in a
a) Tuber
b) Corm
c) Bulb
d) Rhizome

42) A potato tuber is a modified
a) Root
b) Stem
c) Stolon
d) Bulb

43) The terrestrial plant propagating by offset is
a) Agave
b) Onion
c) Eichornia
d) Pistia

44) Ginger is a stem, not a root because
a) It stores food material
b) It grows parallel to soil surface
c) It has nodes and internodes
d) It lacks chlorophyll

45) In Amorphophallus, vegetative reproduction is carried out through the
a) Rhizome
b) Bulb
c) Corm
d) Offset

46) The arrangement of the eyes on a potato tuber is
a) Whorled
b) Opposite
c) Spiral
d) Spirocyclic

47) The main function of a leaf is to
a) Increase the beauty of a tree
b) Manufacture food
c) Exchange of gases
d) Nerve impulse induction

48) Phyllotaxy is the mode of arrangement of leaves and the principle underlying
it is

a) To hide leaves from sunlight
b) To expose all leaves equally to sunlight
c) To minimise the number of leaves on a branch
d) To increase the number of leaves on a branch

49) The arrangement of leaves in the bud condition is
a) Vernation
b) Phyllotaxy
c) Aestivation
d) None of these

50) A bipinnate leaf is characteristic of
a) Papilionaceae
b) Ranunculaceae
c) Mimosoideae
d) None of the above

51) Among the following, which one is not a modification of the stem?
a) Ginger
b) Mango
c) Tuber
d) Garlic

52) Black pepper is a
a) Tree
b) Shrub
c) Climber
d) 3 cm tall herb

53) The veins of a leaf are useful for
a) Transport of water
b) Transport of minerals
c) Transport of organic substances
d) All the above

54) The stalk of a leaflet is called the
a) Petiole
b) Petiolae
c) Petiolule
d) None of these

55) Long tubular petioles are found in
a) Citrus
b) Dionaea
c) Eichhornia
d) Carica

56) Which of these is a non-carnivorous pitcher plant?
a) Calotropis
b) Citrus
c) Mango
d) Mustard

57) Which of the following is not a root?
a) Carrot
b) Sugar beet
c) Radish
d) Potato

58) Petioles modified into tendrils are found in
a) Clematis
b) Passiflora
c) Gloriosa
d) Antigonon

59) The thorns in citrus are modifications of the
a) Leaf
b) Root
c) Stem
d) Petiole

60) The following are the characteristic of Monocots:
a) Fibrous root system, leaves with reticule venation,Trimerous floral parts
and one cotyledon

b) Fibrous root system, Parallel venation of leaves,Trimerous floral parts and one cotyledon
c) Fibrous root system, Parallel venation of leaves, Trimerous floral parts and two cotyledons
d) Tap root system, Parallel venation of leaves, Trimerous floral parts and one cotyledon

61) The longest plant in the world belongs to the family of
a) Dicots
b) Monocots
c) Gymnosperms
d) Pteridophytes

62) The branch of Botany which deals with the form of plants is called
a) Cytology
b) Taxonomy
c) Physiology
d) Morphology

63) Which of the following is the rootless aquatic herb in which a portion of the leaf forms a small bladder that traps water insects?
a) Drosera
b) Dionaea
c) Utricularia
d) Nepenthes

64) Secondary roots arise
a) Endogenously from the pericycle
b) Endogenously from the endodermis
c) Exogenously from the epidermis
d) Exogenously from the cortex

65) Red root is another name of
a) Potato roots
b) Sugarcane roots
c) Beet roots
d) None of these

66) Which is an example of a tuberous root?
a) Colocasia antiqorum
b) Ipomoea batatas
c) Ficus benghalensis
d) Solanum tuberosum

67) Climbing roots are found in
a) Betel
b) Orchids
c) Asparagus
d) Screw pine

68) Pneumatophores are helpful in
a) Transpiration
b) Carbohydrate metabolism
c) Protein synthesis
d) Respiration

69) The roots of Dahlia are
a) Tuberous and fasciculated
b) Napiform
c) Assimilatory
d) Fibrous

70) Pneumatophores are characteristic of the family
a) Loranthaceae
b) Rhizophoraceae
c) Hydrocharitaceae
d) Orchidaceae

71) In onions, the underground swollen edible portion is the
a) Root
b) Bulb
c) Underground stem
d) Rhizome

72) The branches of the stem are
a) Endogenous in origin
b) Endogenous in origin
c) Exogenous in origin
d) Partly endogenous and partly exogenous

73) The underground modification of the stem is primarily for
a) Respiration
b) Perennation
c) Vegetation reproduction
d) Growth

74) Some plants have roots and rhizomes, both underground structures. Which characteristic of the rhizome would distinguish it from a root?
a) Rhizomes are thinner than roots
b) Rhizomes are darker in colour than roots
c) Rhizomes have scale leaves with buds in the axils
d) Rhizomes are thicker than roots

75) Which is not a modification of the stem?
a) Corm of Colocasia
b) Rhizome of ginger
c) Pitcher of Nepenthes
d) Tuber of potato

76) An erect and unbranched stem with hollow internodes is known as a culm. It is found in
a) Asparagus
b) Onion
c) Bamboo
d) Pea

77) In which of the following is the stipule modified into a spine?
a) Cotton
b) Desmodium
c) Zizyphus
d) Cuscuta

78) A swollen leaf base is called a
a) Stipules
b) Bract
c) Pulvinus
d) Tuber

79) The axillary buds arise
a) Exogenously from the outer layers of the cortex
b) Exogenously from the epidermis
c) Endogenously from the pericycle
d) Endogenously from the main growing point

80) Epidermal outgrowths are known as
a) Leaves
b) Trichomes
c) Flower buds
d) Stomata

81) A thorn is a modified branch because
a) It arises in the axil of a leaf
b) It looks like a branch
c) It is a hard, straight and pointed structure
d) It is part of the plant

82) In which of the following are hooked climbers found?
a) Lathyrus
b) Artabotrys
c) Gloriosa
d) Quiisqualis

83) A plant of the family Liliaceae showing stipules modified into tendrils is
a) Lilium
b) Smilax
c) Gloriosa
d) Yucca

84) In which of the following are ochraceous stipules found?
a) Moringa
b) Polygonus
c) Rosa
d) Lathyrus

85) Prickles in the rose are
a) Modified leaves
b) Accessory buds
c) Exogenous in origin
d) Endogenous in origin

86) Bignonia is the best example of a
a) Hook climber
b) Twiner
c) Tendril climber
d) Thorn climber

87) Lantana is an example of a
a) Twiner
b) Soft herb
c) Prickly shrub
d) Huge tree

88) Which of the following is a modification of the leaf?
a) Cladode
b) Phyllode
c) Corm
d) Phylloclade

89) In which of the following plants is the leaf margin spiny?
a) Argemone
b) Papaver
c) Opuntia
d) Parkinsonia

90) The dicotyledonous leaf showing parallel venation is of
a) Smilax
b) Ranunculus
c) Calophyllum
d) Dioscorea

91) A phyllode which is a leaf modification meant for photosynthesis is considered to be a
a) Hydrophytic adaptation
b) Halophytic adaptation
c) Xerophytic adaptation
d) Mesophytic adaptation

92) In which of the following is the leaf lamina generally reduced?
a) Hydrophytes
b) Mesophytes
c) Epiphytes
d) Xerophytes

93) Aquatic plants have
a) Well developed stomata
b) Well developed aerenchyma
c) Well developed roots
d) Well developed xylem

94) Which of the following is called “sundew”?
a) Lotus
b) Drosera
c) Aldrovanda
d) Nepenthes

95) A leaf without a petiole is called
a) Petiolate
b) Sessile
c) Subsessile
d) Subpetiolate

96) Root hairs occur in the
a) Root cap
b) Region of cell elongation
c) Apical meristem
d) Region of maturation

97) Lateral roots in Angiosperms originate most commonly in the
a) Endosperm
b) Pericycle
c) Cortex
d) Epidermis

98) Green photosynthetic roots occur in
a) Cuscuta
b) Portulaca
c) Tinospora
d) Pandanus

99) The climbing organs of Pothos and piper betel are
a) Roots
b) Stems
c) Petioles
d) Leaf apex

100) Roots of Dahlia and Asparagus are
a) Tuberous
b) Tuberous and fasciculated
c) Nodulated
d) Tap root

Answers

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