General Science – Biology GK Questions

Multiple choice questions on General Science – Biology for General Studies and GK preparation of SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.

Practice MCQ Questions

1. Who among the following coined the term 'cell'?

(a) Theodor Schwann

(b) Robert Hooke

(c) Oswald Avery

(d) Gerhard Domagk

Answer: (b)

2. The suicidal bags of the cell are:

(a) Lysosomes

(b) Ribosomes

(c) Dictyosomes

(d) Phagosomes

Answer: (a)

3. In which part of the cell are proteins made?

(a) Reticulum

(b) Golgi apparatus

(c) Ribosomes

(d) Lysosome

Answer: (c)

4. Name the scientist who proposed the cell theory.

(a) Schleiden and Schwann

(b) Lamarck

(c) Treviranus

(d) Whittaker and Stanley

Answer: (a)

5. Which cell organelle is also called the 'power house of a cell'?

(a) Lysosome

(b) Mitochondria

(c) Golgi Apparatus

(d) Plastids

Answer: (b)

6. The cell wall of a plant is composed of:

(a) Lipoprotein

(b) Carbohydrates

(c) Cellulose

(d) Lipids

Answer: (c)

7. What is contained in Chlorophyll?

(a) Sodium

(b) Potassium

(c) Manganese

(d) Magnesium

Answer: (d)

8. Which part of a plant cell traps sunlight to make sugar?

(a) Chloroplast

(b) Leucoplast

(c) Chromoplast

(d) Starch grain

Answer: (a)

9. Which of the following is not connective tissue?

(a) Bone

(b) Cartilage

(c) Blood

(d) Skeletal muscle

Answer: (d)

10. Skeletal muscles are attached to the skeleton by tough connective tissues called ...............

(a) Cartilage

(b) Neurons

(c) Ligament

(d) Tendons

Answer: (d)

11. In plants, water is transported through which of the following medium?

(a) Xylem

(b) Phloem

(c) Stomata

(d) Root hair

Answer: (a)

12. Name the tissue that transports food to various parts of a plant.

(a) Phloem

(b) Xylem

(c) Parenchyma

(d) Sclerenchyma

Answer: (a)

13. RNA is a polymeric molecule. What does RNA stand for?

(a) Rado Nuclear Acid

(b) Ribo Nucleic Acid

(c) Rhino Nuclear Acid

(d) Resto Nucleus Acid

Ans. (b)

14. DNA stands for –––––– .

(a) Di Nucleic Acid

(b) Deoxy Nucleic Acid

(c) Di ribonucleic Acid

(d) Deoxyribonucleic Acid

Answer: (d)

15. What is the basic unit of heredity?

(a) DNA

(b) RNA

(c) Chromosome

(d) gene

Answer: (d)

16. Which food component has the highest gross calorific value?

(a) Proteins

(b) Fats

(c) Carbohydrates

(d) Vitamins

Answer: (b)

17. Which of the following has the highest protein content per gram?

(a) Apple

(b) Soyabean

(c) Wheat

(d) Groundnut

Answer: (b)

18. Which of the following is an active enzyme?

(a) trypsin

(b) trypsinogen

(c) chymotrypsinogen

(d) procarboxypeptidases

Answer: (a)

19. In which of the following forms are carbohydrates stored in our body?

(a) Lactose

(b) Cellulose

(c) Glycogen

(d) Glucose

Answer: (c)

20. Name of enzyme in the human body that helps to break down carbohydrates.

(a) Protease

(b) Lipase

(c) Pepsin

(d) Amylase

Answer: (d)

21. What combination of paternal chromosome results in a female?

(a) ZX

(b) XX

(c) YZ

(d) XY

Answer: (b)

22. How many chromosomes does a human cell contain?

(a) 6

(b) 26

(c) 46

(d) 66

Answer: (c)

23. Mendel is known as:

(a) Father of Physiology

(b) Father of Geology

(c) Father of Genetics

(d) Father of Biology

Answer: (c)

24. Charles Darwin, the famous evolutionist, proposed his theory in which one of his books?

(a) The families of flowering plant

(b) The origin of species

(c) The life on earth

(d) The story of the living world

Answer: (b)

25. Binomial Nomenclature was founded by:

(a) Charles Darwin

(b) Robert Nucleus

(c) Carl Linnaeus

(d) Lamarck

Answer: (c)

26. Five-kingdom classification was proposed by__

(a) Whittaker

(b) Huxley

(c) Linnaeus

(d) Lamarck

Answer: (a)

27. 'Amoeba' belongs to which of the following kingdom?

(a) Monera

(b) Fungi

(c) Protista

(d) Animalia

Answer: (c)

28. Which of the following organisms are considered to be both living and non-living?

(a) Bacteria

(b) Fungi

(c) Algae

(d) Virus

Answer: (d)

29. Which of the following organisms belongs to the kingdom 'Monera'?

(a) Bacteria

(b) Mushroom

(c) Fungi

(d) Bread mould

Answer: (a)

30. Sponges belongs to the phylum:

(a) Protozoa

(b) Annelida

(c) Porifera

(d) Cnidaria

Answer: (c)

31. Which type of reproduction occurs in hydra?

(a) Fragmentation

(b) Budding

(c) Binary Fission

(d) Spore Formation

Answer: (b)

32. Earth-worms belong to the phylum:

(a) Protozoa

(b) Cnidaria

(c) Annelida

(d) Mollusca

Answer: (c)

33. Which of the following is an example of ‘Arthropod’?

(a) Blood sucking leech

(b) Hookworm

(c) Earthworm

(d) Scorpion

Answer: (d)

34. Which of the following has open vascular system?

(a) Cockroach

(b) Human

(c) Rat

(d) Birds

Answer: (a)

35. Crocodiles have a –––––– chambered heart.

(a) Three

(b) One

(c) Four

(d) Two

Answer: (c)

36. Which of the following is the largest bird in the world?

(a) Ostrich

(b) Emu

(c) Rhea

(d) Cassowary

Answer: (a)

37. Which of the following is the smallest bird in the world?

(a) Bee Hummingbird

(b) Rufous Hummingbird

(c) Emerald Toucanet

(d) Greater Bird-of-Paradise

Answer: (a)

38. Which of the following is the only flying mammal?

(a) Bat

(b) Flying fox

(c) Flying squirrel

(d) Colugo

Answer: (a)

39. Which of the following is the only egg-laying mammal?

(a) Platypus

(b) Echidna

(c) Koala

(d) Kangaroo

Answer: (a)

40. Which of the following is the only mammal that can climb trees?

(a) Sloth

(b) Gorilla

(c) Orangutang

(d) Chimpanzee

Answer: (a)

41. Which of the following is the largest land animal in the world?

(a) African elephant

(b) Asian elephant

(c) Giraffe

(d) Rhinoceros

Answer: (a)

42. Which of the following is the fastest land animal in the world?

(a) Cheetah

(b) Gazelle

(c) Springbok

(d) Wildebeest

Answer: (a)

43. Which of the following is the largest fish in the world?

(a) Whale shark

(b) Basking shark

(c) Megamouth shark

(d) Giant squid

Answer: (a)

44. Which of the following is the smallest fish in the world?

(a) Paedocypris progenetica

(b) Schindleria brevipinguis

(c) Trimmatom nanus

(d) Pandaka pygmaea

Answer: (a)

45. Which of the following is the largest reptile in the world?

(a) Saltwater crocodile

(b) American alligator

(c) Nile crocodile

(d) Komodo dragon

Answer: (a)

46. Which of the following is the largest insect in the world?

(a) Goliath beetle

(b) Atlas moth

(c) Hercules beetle

(d) Giant weta

Answer: (a)

47. Which of the following is the largest land snail in the world?

(a) African giant snail

(b) Giant African land snail

(c) Giant Galapagos tortoise

(d) Giant African millipede

Answer: (a)

48. Which of the following is the largest jellyfish in the world?

(a) Lion's mane jellyfish

(b) Box jellyfish

(c) Portuguese man o' war

(d) Moon jelly

Answer: (a)

49. Which of the following is the largest starfish in the world?

(a) Giant Pacific starfish

(b) Sun star

(c) Common starfish

(d) Sea star

Answer: (a)

50. Which of the following is the largest coral reef in the world?

(a) Great Barrier Reef

(b) Belize Barrier Reef

(c) Mesoamerican Reef

(d) Lakshadweep

Answer: (a)