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Free download in PDF Botany Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
61
Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called:
[A]
Apospory
[B]
Apomixis
[C]
Diplospory
[D]
Adventives polyembryony
62
Basal placentation is found in the family:
[A]
Asteraceae
[B]
Fabaceae
[C]
Malvaceae
[D]
Solanaceae
63
In a pond ecosystem, benthos means:
[A]
Primary consumes in the bottom of a pond
[B]
Zooplanktons on water surface
[C]
Large fishes eating small ones
[D]
All phytoplankton’s
Answer: Primary consumes in the bottom of a pond
64
Eyes on potato tubers represent:
[A]
Nodes with buds
[B]
Sutures
[C]
Rootlets
[D]
Scars
65
Fungus without mycelium is:
[A]
Saccharomyces
[B]
Rhizopus
[C]
Puccinia
[D]
Mucor
66
The pigment involved in photo morphogenetic movements is:
[A]
Phytochrome
[B]
Vernalin
[C]
Cytochrome
[D]
Chromatin
67
Tyloses are:
[A]
Sieve plates
[B]
Tracheal plugs plugging the lumen of vessels and tracheids
[C]
Lactiferous channels
[D]
Secretory cells
Answer: Tracheal plugs plugging the lumen of vessels and tracheids
68
Ribozyme is:
[A]
RNA with enzymatic activity
[B]
enzyme
[C]
Hormone
[D]
Protein
Answer: RNA with enzymatic activity
69
In Bignonia eapreolata pollination is carried out by:
[A]
Wind
[B]
Bird
[C]
Insect
[D]
Bat
70
Genetic engineering is related with:
[A]
Eugenics
[B]
Euthenics
[C]
Euphenics
[D]
All of these
71
Floating roots are the characteristics feature of:
[A]
Jussiaea
[B]
Cuscuta
[C]
Viscum
[D]
Vanda
72
Which one of the following is the earliest land plant?
[A]
Synchytrium
[B]
Cycas
[C]
Ulothrix
[D]
Rhynia
73
The hormone responsible for ripening of fruits is
[A]
Ethylene
[B]
Cytokinin
[C]
Auxin
[D]
ABA
74
Coir is the commercial product of coconuts:
[A]
Endosperm
[B]
Pericarp
[C]
Endocarp
[D]
Mesocarp
75
Polygenic genes show:
[A]
Similar genotype
[B]
Different genotype
[C]
Similar phenotype
[D]
Different phenotype
Answer: Different phenotype
76
Select the correct statement:
[A]
Legumes are incapable of fixing nitrogen
[B]
Legumes fix nitrogen through bacteria living in fruits root
[C]
Legumes fix nitrogen only by bacteria present in nodules
[D]
None of the above
Answer: Legumes fix nitrogen only by bacteria present in nodules
77
Azotobacter and Beijerinckia are the examples of
[A]
Symbiotic nitrogen-fixers
[B]
Non-symbiotic nitrogen-fixers
[C]
Ammonifying bacteria
[D]
Disease causing bacteria
Answer: Non-symbiotic nitrogen-fixers
78
Smilax a climbing genus belongs to
[A]
Cucurbitaceae
[B]
Solanaceae
[C]
Liliaceae
[D]
Cruciferae
79
The scutellum of the gram embryo is a:
[A]
Vestigial organ
[B]
Photosynthetic organ
[C]
Absorptive organ
[D]
Protective organ
80
In certain parts of India, muscular dystrophy is commonly found amongst the poor people because they eat cheap pulse from the plant
[A]
Pisum satiuvm
[B]
Lathyrus sativus
[C]
Cicer arietmum
[D]
Phaseolus mungo
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