General Knowledge Biology Questions and Answers PDF Download Free

In this post, we have shared GK Biology questions, students can practice questions and check their understanding.

Q1.Xenobiotics which are inherently resistant to microbial attack are called as-

(1) All of the given optins
(2) Biodegradable
(3) Persistent
(4) Recalcitrant

Answer

Recalcitrant

Q2.Which part of the cinchona yields a drug?

(1) Pericarp
(2) Endosperm
(3) leaf
(4) Bark

Answer

Bark

Q3.Virus that infect bacteria are called

(1) Basophils
(2) Bacteriophages
(3) Basidiospores
(4) Basal body

Answer

Bacteriophages

Q4.The inflorescence of wheat is-

(1) Catkin
(2) Raceme
(3) Panicle
(4) Spike

Answer

Spike

Q5.The biggest single- celled organism is

(1) Acetabularia
(2) Yeast
(3) Amoeba
(4) Acetobacter

Answer

Acetabularia

Q6.Study of pollen grain is called-

(1) Polynology
(2) Pomology
(3) Mycology
(4) Phocology

Answer

Polynology

Q7.Study of internal structure of plant-

(1) Anatomy
(2) Morphology
(3) Taxonomy
(4) Cology

Answer

Anatomy

Q8.Study of growing plant without soil in water containing nutrient is-

(1) Hydrophonics
(2) Hydrotonics
(3) None
(4) Hypotonics

Answer

Hydrophonics

Q9.Silviculture is the branch of botany in which we study about-

(1) Development of ofrest
(2) Culture of algae
(3) Siliciphida plant
(4) Culture of fungi

Answer

Development of ofrest

Q10.Red rot of sugarcane is caused by

(1) Cercospora percoruata
(2) Colletotrichum falcatum
(3) Phylophthora infestans
(4) Alternaria alternate

Answer

Colletotrichum falcatum

Q11.Parthenogenesis is a process in which-

(1) Fruit develop without fertilization
(2) Fruit develop without harmone
(3) Development of embryo without fertilization
(4) Development of egg without fertilization

Answer

Fruit develop without fertilization

Q12.Lungs of a plant are-

(1) Stems
(2) Leaves
(3) Roots
(4) Flowers

Answer

Leaves

Q13.In Exo-biology we study about-

(1) Life present on the earth
(2) External structure of living beings
(3) Life found in space and on other satellite.
(4) Life present in the other layer of earth atmosphere

Answer

Life found in space and on other satellite.

Q14.Ginger is-

(1) Modified stem
(2) Modified root
(3) Modified bulb
(4) Modified leaf

Answer

Modified stem

Q15.Fiber of cotton is obtain from–

(1) Seed
(2) Stem
(3) Root
(4) Fruit

Answer

Fruit

Q16.Eye of potato are –

(1) Axillary buds
(2) Apical buds
(3) Extra axillary bud
(4) Adventitous root

Answer

Axillary buds

Q17.Estimatin of age of woody plant by counting annual ring is-

(1) Denrochronolgy
(2) Dendrology
(3) Demography
(4) Agronomy

Answer

Denrochronolgy

Q18.EBOLA is a –

(1) Bacteria
(2) Virus
(3) Fungi
(4) Protozoa

Answer

Virus

Q19.Dr. Norman E. Borlaug belonged to-

(1) Mexico
(2) Spain
(3) Austria
(4) America

Answer

America

Q20.Double fertilization is main feature of-

(1) Pteridophytes
(2) Bryophtes
(3) Angiosperm
(4) Gymnosperm

Answer

Angiosperm

Q21.Desease caused by HIV-

(1) Cancer
(2) Tuberculosis
(3) None of these
(4) Acquired immune deficiency syndrome

Answer

Acquired immune deficiency syndrome

Q22.Curd is sour due to presence of

(1) Lactic Acid
(2) Citric Acid
(3) None of these
(4) Acetic Acid

Answer

Lactic Acid

Q23.Cactus is referred to as-

(1) Mesophte
(2) Hydrophte
(3) Epiphte
(4) Xerophyte

Answer

Xerophyte

Q24.An enzyme produced by HIV that allows the integration of HIV DNA into the host cells DNA is –

(1) Ligase
(2) Integrase
(3) DNA gyrase
(4) Helicase

Answer

Integrase

Q25Agar – agar is prepared from

(1) Lichens
(2) Alage
(3) Bryophyte
(4) Fungi

Answer

Alage

Q26.Agar – Agar is obtained from –

(1) Algae
(2) Fungi
(3) Bacteria
(4) Moss

Answer

Algae

Q27.Aflatoxins are produced by –

(1) Bacteria
(2) Fungi
(3) Viruses
(4) Algae

Answer

Fungi

Q28.A fertilized egg is known as-

(1) Conidiospre
(2) Oospore
(3) Zygote
(4) Zoospore

Answer

Zygote

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