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Online Tests
NAT-IIB Biological Science Botany Hard Test MCQs With Answers
Question # 1
Members of family -------- are a source of camphor
Choose an answer
Cucurbitaceae
Labiaceae
Compositeae
Malvaceae
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Question # 2
Aggregates of closely related species
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Infra specific species
Variety
Subspecies
Genus
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Question # 3
Seeds of family ---------- bear a tuft of hairs
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Compositeae
Labiateae
Asclepiadaceae
Ranunculaceae
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Question # 4
Many fungi are the sources of drugs, which drug is used to lower the blood cholesterol level
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Griseofulvin
Cyclosporine
Lovastatin
Ergotin
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Question # 5
Plants of family asclepiadaceae are used to treat
Choose an answer
Gastric disorders
Skin disorders
Maternal disorders
None of these
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Question # 6
1.
----------- is the process in which plasma membrane starts pulling away from the cell wall;
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Incipient plasmolysis
Indirect plasmolysis
Critical Phasmolysis
None
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Question # 7
The system of classification that reflects the evolution
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Modern
Phylogenetic
Polygenic
Natural
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Question # 8
A special protein that generates voltage across a membrane is called;
Choose an answer
Electrochemical protein
Electromagnetic Protein
Electrogenic protein
Proteogenic protein
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Question # 9
Vegetative parts of ----------- are easier to observe than reproductive parts
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Angiosperms
Gymnosperms
Bryphytes
Pteridophytes
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Question # 10
The species which is at the threat of danger of extinction is called
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Endangered species
Extinct species
Threatened species
All of these
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Question # 11
The anthers are two celled and pollen grains are in the form of tetrads and are found in the sac like sturctures
Choose an answer
Polonium
Gynoestigium
Corpusculum
Translator
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Question # 12
Fungi cause certain animal diseases. How Ringworm and athlete's foot are caused by fungi
Choose an answer
Imperfect fungi
Aspergillus fumigatus
Purple ergot
Soil contaminated with bird's feces
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Question # 13
Males suffering from Jacobs's syndrome have sex chromosomes
Choose an answer
XXX
XO
XXY
XYY
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Question # 14
Historical remnants of structures that had important function in ancestors but are no longer essential presently are called
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Analogous organs
Vestigial organs
Fossils
None of these
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Question # 15
The species with the same specific epithet cannot occur in the genus. If this happens, they are called
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Homonym
Synonym
Legitimate
Illegitimate
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Question # 16
As a result of the union of anther and pistil this structure is formed
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Polonium
Gynoestigium
Corpusculum
Translator
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Question # 17
Those individuals whose inherited characteristic fit them best to their environment are likely to leave more offspring, it is referred as
Choose an answer
Artificial selection
Natural Selection
Survival of the fittest
Both B and C
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Question # 18
Which of the following can be used as evidence of evolutions?
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Comparative embryology
Comparative anatomy
Genetic Code
All of these
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Question # 19
Which one of the following is a biotic component?
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Atmosphere
Water
Fungi
Soil
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Question # 20
The oxidative change of water in photo-chemical excitation occurs in a process
Choose an answer
Photo-reaction
Phosphorylation
Photo-oxidation
None
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Question # 21
Cohesion theory of ascent of sap is proposed by
Choose an answer
Zimmernmann
John jolly
Dixon
Both a & b
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