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UPSC Biology

4014.Stem is modified into cladode
Casuarina
Asparagus
Opuntia
Euphorbia
4015.Verticillaster type of inflorescence is found in
Cotton
Datura
Lilium
Ocimum
4016.A simple one seeded fruit in which pericarp is fused with seed coat is
Achene
Caryopsis
Cypsela
Nut
4017.The portion of DNA which contains information for an entire polypeptide is called
Cistron
Muton
Recon
Operon
4018.Bicarpellary, syncarpous ovary with axile placentation is seen in
Solanaceae
Caesalpinaceae
Asteraceae
Malvaceae
4019.Alburnum is also called
Autumn wood
Heart wood
Sap wood
Spring wood
4020.The entry of pollen tube into the ovule through micropyle is called
Porogamy
Mesogamy
Anisogamy
Chalazogamy
4021.Type of pollination in Commelina is
Chasmogamy
Geitonogamy
Xenogamy
Cleistogamy
4022.The process of embryo formation without fertilization is known as
Apospory
Apogamy
Parthenocarpy
Polyembryony
4023.Which of the process Cholodny-Went theory is concerned with
Photomorphogenesis
Photoperiodism
Phototropism
Photorespiration
4024.The hormone present in the liquid endosperm of coconut is
Cytokinin
Gibberellin
Ethylene
Auxin
4025.The phytohormone which influences apical dominance growth is
IAA
ABA
GA3
C2H4
4026.An example of short day plant is
Wheat
Maize
Chrysanthemum
Radish
4027.The ovary after fertilization is converted into
Embryo
Endosperm
Fruit
Seed
4028.The molecular formula of Chlorophyll is
C55H72O5N4Mg
C55H70O5N4Mg
C55H72O6N4Mg
C50H72O5N4Mg
4029.The first compound that accepts CO2 during dark phase is
NADP
Ferrodoxin
RUBP
Cytochrome
4030.Initiation codon for methionine is
AAA
UUU
UAA
AUG
4031.The deficiency of this micronutrient results in little leaf disease
Copper
Zinc
Boron
Iron
4032.Kranz anatomy is a morphological diversity in the leaves of
C3-plants
C4-plants
C3 and C4-plants
CAM plants
4033.Prechilling treatment to break seed dormancy is
Scarification
Stratification
Impaction
Vernalization
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