General Science quiz Set 1

General Science quiz Set 1

General Science Quiz Questions and Answers for Competitive Exam.

1. Silviculture is the branch of botany in which we study about ?

(A) Culture of algae
(B) Development of forest
(C) Culture of fungi
(D) Siliciphida plant

Answer is (B) Development of forest

2. Study of pollen grain is called-?

(A) Pomology
(B) Palynology
(C) Paleobotany
(D) Mycology

Answer is (D) Palynology studies pollen and spores produced by plants.
Pomology is the science of fruit cultivation.
Paleobotany - It is the branch of botany that deals with the study of plant fossils.
Mycology - It is the study of fungi.

3. Study of internal structure of plant ?

(A) Morphology
(B) Anatomy
(C) Ecology
(D) Taxonomy

Answer is (B) Anatomy

4. Estimation of age of woody plant by counting annual ring is ?

(A) Dendrology
(B) Dendrochronology
(C) Agronomy
(D) Demography

Answer is (B) Dendrochronology is the scientific method of dating the age of trees by the number of rings that they have grown.
Demography is the study of human populations.
Dendrology is the branch of botany dealing with trees and shrubs.

Dendrochronology 

5. Study of growing plant without soil in water containing nutrient is ?

(A) Hydrotonics
(B) Hydroponics
(C) Hypotonics
(D) Horticulture

Answer is (B) Hydroponics

6.In Exo-biology we study about ?

(A) External structure of living beings
(B) Life present on the earth
(C) Life present in the other layer of earth atmosphere
(D) Life found in space and on other setallite.

Answer is (D) Life found in space and on other setallite.

7. Xenobiotics which are inherently resistant to microbial attack are called as

(A) Biodegradable
(B) Persistent
(C) Recalcitrant
(D) All of the above

Answer is (C) The compounds that resist biodegradation and thereby persist in the environment are called recalcitrant.

8.Curd is sour due to presence of ?

(A) Citric Acid
(B) Lactic Acid
(C) Acetic Acid
(D) None of these

Answer is (B) Lactic Acid

9. EBOL is a -

(A) Virus
(B) Bacteria
(C) Protozoa
(D) Fungi

Answer is (A) Virus

10. Virus that infect bacteria are called ?

(A) Bacteriophages
(B) Basophils
(C) Basal body
(D) Basidiospores

Answer is (A) Bacteriophages

11. Desease caused by HIV ?

(A) Tuberculosis
(B) Cancer
(C) Acquired immune deficiency syndrome
(D) None of these

Answer is (C) Acquired immune deficiency syndrome

12. The biggest single-celled organism is ?

(A) Yeast
(B) Acetabularia
(C) Acetobacter
(D) Amoeba

Answer is (B) Acetabularia, also called mermaid's wine glass, also called umbrella algae. Acetabularia acetabulum is a species of green alga in the family Polyphysaceae.

13. Agar – Agar is obtained from ?

(A) Fungi
(B) Algae
(C) Moss
(D) Bacteria

Answer is (B) Algae

14. Red rot of sugarcane is caused by

(A) Colletotrichum falcatum
(B) Cercospora percoruata
(C) Alternaria alternate
(D) Phylophthora infestans

Answer is (A) Red rot of sugarcane caused by the fungus Colletotrichum falcatum

Red rot and smut disease of sugarcane 

15. Aflatoxins are produced by

(A) Fungi
(B) Bacteria
(C) Algae
(D) Viruses

Answer is (C) Aflatoxins are a family of toxins produced by certain fungi that are found on agricultural crops such as maize (corn), peanuts, cottonseed, and tree nuts. The main fungi that produce aflatoxins are Aspergillus flavus and Aspergillus parasiticus, which are abundant in warm and humid regions of the world.

16. Statements: 1. In Gymnosperms, seeds enclosing in side fruits. 2. Dicots and monocots are included in Angiospersm.

(A) Both Statements 1 and 2 are correct.
(B) Both Statements 1 and 2 are incorrect.
(C) Statement 1 is correct, but Statement 2 is incorrect.
(D) Statement 1 is incorrect, but Statement 2 is correct.

Answer is (D) Statement 1 is incorrect, but Statement 2 is correct.

17. Which part of the cinchona yields a drug ?

(A) Endosperm
(B) Pericarp
(C) Bark
(D) Leaf

Answer is (C) Bark
Cinchona - belonging to family Rubiaceae. The bark of tree is source of a variety of alkaloids, the most familiar of which is quinine, an antipyretic agent especially useful in treating malaria. At the second world war cinchona had great importance in the world trade. At that time 95% of world quinine supply came from Java. Annual world production of quinine and its alkaloids is estimated about 850 tones. India produces only 15-20 tones annually.

medicinal-value-of-Cinchona 

18.Fiber of cotton is obtain from ?

(A) Stem
(B) Seed
(C) Fruit
(D) Root

Answer is (C) Fruit
Cotton is obtained from fruits of cotton plant and jute is obtained from stem of the jute plant.

19. An enzyme produced by HIV that allows the integration of HIV DNA into the host cell's DNA is ?

(A) Integrase
(B) Ligase
(C) Helicase
(D) DNA gyrase

Answer is (A) Integrase

20. Dr. Norman E. Borlaug belonged to ?

(A) Spain
(B) Mexico
(C) America
(D) Austria

Answer is (C) America

 Dr. Norman E. Borlaug

21. Eye of potato are

(A) Apical buds
(B) Axillary buds
(C) Adventitous root
(D) Extra axillary bud

Answer is (B) Axillary buds
Potato is a stem because it has many nodes called eyes with spaces between eyes known as internodes.

22. Ginger is ?

(A) Modified root
(B) Modified stem
(C) Modified leaf
(D) Modified bulb

Answer is (B) Modified stem

Ginger Rhizome 

23. Cactus is referred to as ?

(A) Hydrophyte
(B) Mesophyte
(C) Xerophyte
(D) Epiphyte

Answer is (C) Xerophyte
Cactus is a xerophyte as it specializes in surviving in hot & dry environments.

Cactus-xerophytes 

24. Agar - agar is prepared from ?

(A) Alageae
(B) Lichens
(C) Fungi
(D) Bryophyte

Answer is (A) Alageae

25. The inflorescence of wheat is ?

(A) Raceme
(B) Catkin
(C) Spike
(D) Panicle

Answer is (C) Spike