Reproduction Growth & Development MCQs Part IV

1) Which one of the following is a false fruit?
a) Apple
b) Walnut
c) Mango
d) Citrus

2) Fruits are formed in
a) Cycas
b) Pinus
c) Brassica
d) Funaria

3) The fruit that develops from a single ovary of a single flower is a
a) Simple fruit
b) Composite fruit
c) Aggregate fruit
d) False fruit

4) Which one of the following fruits is derived from a monocarpellate pistil?
a) Capsule
b) Samara
c) Legume
d) Pome

5) An aggregate fruit is defined as one which develops from a
a) Multicarpellary, syncarpous gynoecium
b) Multicarpellary, apocarpous gynoecium
c) Complete inflorescence
d) Multicarpellary, superior ovary

6) In which fruit does the pericarp develops into a winglike structure?
a) Cypsela
b) Samara
c) Achene
d) Lomentum

7) The fruit in which mesocarp is fleshy and endocarp is stony is known as a
a) Pome
b) Berry
c) Drupe
d) Pepo

8) The coconut and mango fruits are
a) Pomes
b) Berries
c) Drupes
d) Hesperidium

9) The fruit pepo is found in
a) Cucurbitaceae
b) Cruciferae
c) Leguminosae
d) Liliaceae

10) Tomato fruit is a
a) Pepo
b) Pome
c) Berry
d) Drupe

11) The characteristic fruit of the family Gramineae is (or the food grain among the
following is)

a) Achene
b) Capsule
c) Cypsela
d) Caryopsis

12) The receptacle grows, becomes fleshy and edible in a
a) Berry
b) Follicle
c) Drupe
d) Pome

13) The fruit that develops from a hypanthodium inflorescence is termed
a) Syconus
b) Sorosis
c) Samara
d) Siliqua

14) The maize grain is a
a) Embryo
b) Seed
c) Fruit
d) None of these

15) The fruit of pineapple is really a
a) Pome
b) Aggregate fruit or Achene
c) Drupe or pepo
d) Multiple fruit or sorosis

16) The edible part of an apple and a pear is the
a) Epicarp
b) Mesocarp
c) Endocarp
d) Thalamus

17) Which is the edible part of a grape?
a) Pericarp and placentae
b) Epicarp
c) Mesocarp
d) None of these

18) The edible part in the fig is the
a) Juicy hairs
b) Receptacle
c) Epicarp
d) Endocarp

19) The edible part of a cucumber is the
a) Mesocarp
b) Endocarp
c) Placenta, pericarp, thalamus and seeds
d) Pericarp and thalamus

20) The edible part of litchi fruit is the
a) Mesoderm
b) Cotyledons
c) Endosperm
d) Fleshy aril

21) The aril is edible in fruits of
a) Fig
b) Strawberry
c) Pomegranate
d) Litchi

22) The edible part of the areca nut is the
a) Endosperm
b) Seed coat
c) Mesocarp
d) Endocarp

23) The edible part of the ripe mango is morphologically the
a) Epicarp
b) Mesocarp
c) Pericarp
d) Endocarp

24) The edible portion in a coconut is the
a) Pericarp
b) Mesocarp
c) Entire seed
d) Seed coat

25) Mango juice is obtained from the
a) Mesocarp
b) Epicarp
c) Endocarp
d) Pericarp and thalamus

26) The seeds of orchids are
a) Light and dry
b) Small and sticky
c) Very large and heavy
d) None of these

27) Among the following plants, whose seeds are dispersed by wind?
a) Oryza
b) Petunia
c) Calotropis
d) Cycas

28) Wind-dispersed seeds and fruits tend to have
a) Barbs or hooks
b) Hairs or wings
c) Sticky surfaces
d) Rounded, compact shapes

29) The parachute mechanism of fruit and seed dispersal common in Compositae, is
due to the structure called

a) Thorns
b) Pappus
c) Bracts
d) Corolla

30) The edible part of the pomegranate (anar) is the
a) Epicarp
b) Mesocarp
c) Endocarp
d) Testa

31) Parthenocarpy is not desirable in the
a) Tomato
b) Pomegranate
c) Banana
d) Potato

32) The fruit of which plants are dispersed by grazing animals such as goats
and cows?

a) Cucurbita
b) Sunflower
c) Xanthium
d) Mustard

33) The edible part of cauliflower is the
a) Fruit
b) Bud
c) Inflorescence
d) Flower

34) In a coconut, the black covering (thin layer) adherent to the kernel around the
endosperm is the

a) Seed coat
b) Mesocarp
c) Endocarp
d) None of these

35) The tegmen develops from the
a) Outer integument
b) Inner integument
c) Chalaza
d) Funicle

36) In which of the following does the germination of the embryo occur normally
when the fruit is still attached to the plant?

a) Epiphytes
b) Pinus
c) Mango
d) Mangrove plants (Halophytes)

37) Vivipary in plants is a character of
a) Xerophytes
b) Hydrophytes
c) Halophytes
d) Hygrophytes

38) Vivipary is a characteristic feature of plants of the
a) Desert
b) Tropical rainforest
c) Mangrove area
d) Fresh water

39) Hypogeal germination of an albuminous seed is seen in
a) Maize
b) Castor
c) Gram
d) Bean

40) In which of the following does the seed germinate while still attached to
the main plant?

a) Mango
b) Rhizophora
c) Screwpine
d) Coconut

41) Epigeal germination is found in
a) Maize
b) Wheat
c) Coconut
d) Castor

42) One of the following is not essential for germination:
a) Air
b) Light
c) Water
d) Temperature

43) Which one is a non-endospermic seed?
a) Maize
b) Pea
c) Wheat
d) Rice

44) The phenomenon of germination of seeds inside the fruit itself is
a) Ovipary
b) Vivipary
c) Hypogeal germination
d) None of the above

45) The scutellum is a/an
a) Protective covering of radicle
b) Protective covering of plumule
c) Endosperm of gymnosperms
d) Shield-shaped cotyledon

46) Which of the following is essential for seed germination?
a) Light
b) Minerals
c) High temperature
d) Water

47) The natural plant hormones were first isolated from
a) Cotton fruits, spinach leaves and rice plants
b) Avena coleoptiles, spinach leaves and the fungus Gibberella
c) Corn germ oil and human urine
d) Human urine and rice plant

48) Which of the following hormones is concerned chiefly with root initiation?
a) IBA
c) ABA
d) Kinetin

49) Apical dominance in higher plants is due to
a) Photoperiodism
b) Enzymes
c) Hormones
d) Light demand

50) Pruning makes the hedge plant dense because
a) Pruning removes shade and allow germination of new seedling to impart a dense growth
b) Injury induces dense growth
c) Apical dominance is removed
d) Roots sprout additional branches

51) What is the cause of the excurrent habit in Pinus ?
a) High concentration of ABA
b) High concentration of cytokinin
c) Presence of gibberellin
d) Presence of apical dominance

52) A good crop of tea leaves from a single plant can be obtained by
a) Removing the apical buds of the main shoot and the branches
b) Cutting off the top of the plant and then applying auxin to the cut ends
c) Supplying auxin from the tip of the plant as well as through roots
d) Feeding auxin to the plant through roots

53) Maximum growth is in the
a) Exponential phase
b) Lag phase
c) Stationary phase
d) Decline phase

54) Removal of the apical bud during flowering results in
a) Death of the plant
b) Formation of a new apical bud
c) Promotion of lateral branching
d) Elongation of the main stem

55) Evergreen trees remain green throughout the year on account of
a) Cold climate
b) Absence of leaf fall
c) Leaves falling in small number at intervals
d) Supply of moisture thoughout the year

56) Leaf fall occurs when the content of
a) Auxin decreases
b) Auxin increases
c) Gibberellic acid decreases
d) Abscissic acid decreases

57) Seedless tomatoes are produced by
a) Growing tomato plants in mineral solution
b) Supplying radioactive compounds
c) Spraying hormones on flowers
d) Propagating tomato plants from cuttings

58) Avena curvature test was first performed by
a) Kurosawa
b) J.C.Bose
c) Skoog
d) F.W. Went

59) During the cell enlargement phase of growth, molecules of new cell wall material are inserted between the original molecules of stretched wall. This process is known as
a) Intussusception
b) Apposition
c) Integration
d) None of the above

60) An apple tree can be made to produce larger fruits than usual by
a) Applying hormones
b) Thinning of blossoms
c) Decapitating the stem apex
d) Defoliating

61) Plants differ from animals in having
a) Localised growth
b) Localised growth and indefinite life span
c) Indefinite life span
d) Definite life span

62) Where would you look for active cell divisions in a plant ?
a) In the internodal region
b) At the tips of roots and shoots
c) In the pith of cells
d) In the cells of cortex

63) After achieving its maximum, the growth decreases slowly during the phase of
a) Cell maturation
b) Cell division
c) Cell differentiation
d) Cell enlargement

64) In which of the following three phases does an organism exhibit rapid growth ?
a) Lag phase
b) Log phase
c) Stationary phase
d) All the above

65) What is the pattern of the growth curve when growth is plotted against time?
a) Parabola
b) Hyperbola
c) Sigmoid
d) Straight line

66) The growth pattern of a plant is different from the growth pattern of an animal in having
a) Localised growth centres
b) Indefinite life span
c) Both the above
d) Diffused growth

67) Growth involves
a) Cell division
b) Cell enlargement
c) Cell maturation
d) All the above

68) In a growing plant, the very first phase during the process of growth is
a) Cell division
b) Cell enlargement
c) Cell differentiation
d) Cell maturation

69) How does growth take place in an organism ?
a) By change of size
b) By chemical reaction in the cells
c) By biochemical conversion of food into living matter
d) By multiplication of cells or tissues

70) In a vascular plant the exponential phase represents the phase of
a) Cell division
b) Cell elongation
c) Cell maturation
d) Cell differentiation

71) The period of exponential phase of an organ or organism is called
a) Period of growth
b) Maximum period of growth
c) Log phase of growth
d) Period of minimum growth

72) The most important division for the growth of a plant is
a) Mitosis
b) Meiosis
c) Amitosis and fission
d) All the above

73) The maximum growth in the shoot occurs at
a) The shoot apex
b) The base of shoot
c) Behind the apex
d) All the above

74) The maximum amount of growth in the root occurs in
a) The root cap region
b) Presence of light
c) The region behind the apex
d) Darkness

75) What emerges first at the time of seed germination ?
a) Radicle/root
b) Plumule/shoot
c) Cotyledons
d) Hypocotyl

76) The instrument used to measure the growth of the stem or the growth of a potted plant is the
a) Potometer
b) Osmometer
c) Auxanometer
d) Clinostat

77) Enzymes, vitamins and hormones can be classified into a single category of biological chemicals because all of them
a) Aid in regulating metabolism
b) Are proteins
c) Are synthesized within the body
d) Enhance the oxidative metabolism

78) Phytochrome is found in
a) Algae
b) Fungi
c) Gymnosperms
d) Angiosperms

79) If a leaf segment of Bryophyllum plant is in soil, it produces new plants. This is because its leaf has
a) Small embryos
b) Buds
c) High concentration of auxin and cytokinins
d) High concentration of cytokinins

80) The induction of rooting in stem cuttings by auxin treatment would be beneficial in which of the following ?
a) Cuscuta
b) Bougainvillea
c) Marchantia
d) Triticum

81) Which of the following hormones is concerned chiefly with cell division in plants ?
a) Gibberellin
b) IAA
c) Zeatin
d) 2, 4-D

82) Weed-killers generally have properties much like that of
a) Vitamins
b) Enzymes
c) Hormones
d) Insecticides

83) Which of the following plant material is widely used in the preparation of culture medium?
a) Pinus longifolia
b) Cocos nucifera
c) Borassus flabellifer
d) Cycas revoluta

84) Apical dominance in higher plants is due to
a) Hormones
b) Enzymes
c) Carbohydrates
d) Photoperiodism

85) In plants growth is
a) Restricted to certain regions or sturctures
b) Irreversible
c) Change in size
d) All the above

86) The auxanometer is an instrument with which we can measure the
a) Rate of respiration
b) Rate of photosynthesis
c) Rate of growth
d) Rate of transpiration

87) Which one of the following responses of plants to growth hormones is true for ethylene ?
a) Increase in cell elongation
b) Decrease in the formation of female flowers
c) Increase in ripening of fruits
d) Decrease in abscission of flowers

88) Growth is primarily affected by two climatic factors which are
a) Light and temperature
b) Temperature and relative humidity
c) Light and wind
d) Rainfall and temperature

89) Which of the following techniques is employed for the separation and identification of phytohormones ?
a) Polarizing microscopy
b) Autoradiography
c) Gas chromatography
d) Cell fractionation

90) Indole butyric acid is capable of
a) Inhibiting fruit development
b) Inhibiting flower development
c) Inducing root development
d) Preventing root development

91) Banana is a parthenocarpic fruit because
a) It is 3n
b) It is vegetatively propagated
c) Its ovary has high levels of auxin
d) It is treated with hormones

92) For which of the following is parthenocarpy not desirable ?
a) Tomato
b) Orange
c) Watermelon
d) Pomegranate (Anar)

93) Seedless fruits can be obtained by treating a plant with
a) Enzyme
b) Auxin
c) Vitamin

94) Which hormone is practically used to enhance fruit ripening and fruit set ?
a) Auxin
b) Gibberellins
c) Cytokinin
d) Abscisin

95) High concentration of synthetic auxins would
a) Prevent lateral buds of grow
b) Kill weeds
c) Cause root initiation
d) Control cell enlargement

96) The principal and naturally occuring auxin in higher plants is
a) NAA
b) MH (Maleic hydrazide)
c) IAA (Indole acetic acid)
d) 2, 4-D

97) Auxins are abundantly produced in the
a) Root
b) Meristematic region of the root
c) Shoot
d) Meristematic region of the shoot

98) Auxins are
a) Growth catalysts
b) Destroyers of growth
c) Growth hormones
d) Inhibitors of growth

99) In human beings, the eggs are
a) microlecithal
b) macrolecithal
c) mesolecithal
d) alecithal

100) Fertilization of ovum takes place in rabbit, man and other placental mammals in the
a) Ovary
b) Fallopian tube
c) Cervix
d) Uterus



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