Biology set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 605 questions
Q.61 Which of the Mendel's laws states that a diploid organism passes a randomly selected allele for a trait to its offspring, such that the offspring inherit one allele from each parent?
A Law of dominance
B Law of paired factor
C Law of independent assortment
D Law of segregation
Discuss / Board
Q.62 Which of the following is a part of apical meristem found in roots.
A Protoderm
B Leaf primordium
C Differentiating vascular tissue
D Axillary bud
Discuss / Board
Q.63 Which of the following causes enlargement and extension growth of cells?
A Cytokinins
B Abscisic acid
C Auxins
D Ethylene
Discuss / Board
Q.64 Who was the first person to conduct a systematic study of chromosomes during division and called this process mitosis?
A Friedrich Miescher
B Thomas Hunt Morgan
C Antonie van Leeuwenhoek
D Walther Flemming
Discuss / Board
Q.65 In which year did a trio of scientists, Avery, MacLeod and McCarty, prove that except viruses, all living organisms have DNA as their genetic material?
A 1918
B 1902
C 1944
D 1961
Discuss / Board
Q.66 In the context of DNA, which of the following principles governs the process of transcription?
A The transforming principle
B The principle of complementarity
C Semiconservative nature of DNA
D The principle of inheritance
Discuss / Board
Q.67 Which virus is responsible for causing AIDS?
A Human Immunodeficiency Virus
B Hepatitis B Virus
C Human Papillomavirus
D Epstein-Barr Virus
Discuss / Board
Q.68 To remain healthy and disease free, taking
A a diet that contains adequate amount of protein and fat
B a diet that contains sufficient amount of all the nutrients that the human body needs to grow properly
C a diet that contains adequate amount of carbohydrates
D a diet that contains appreciable number of vitamins and minerals
Discuss / Board
Q.69 What is the primary source of energy for most ecosystems on Earth?
A Tidal energy
B Wind
C Geothermal heat
D Sunlight
Discuss / Board
Q.70 The major carbohydrate of milk is
A Lactose
B Sucrose
C Fructose
D Maltose
Discuss / Board
Q.71 Which of the following vitamins includes cobalt as an essential component?
A Vitamin B12
B Vitamin C
C Vitamin D
D Vitamin K
Discuss / Board
Q.72 Which of the following organisms is used in bread and alcohol industries?
A Producer
B Fungus
C Carnivore
D Herbivore
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Q.73 Which of the following options correctly matches column-A with column-B? Column-A (Name of Vitamin) i. Vitamin A ii. Vitamin D iii. Vitamin B1 iv. Vitamin C Column-B (Deficiency Diseases)
A i-c, ii-d, iii-a, iv-b
B i-d, ii-c, iii-b, iv-a
C i-d, ii-c, iii-a, iv-b
D i-c, ii-d, iii-b, iv-a
Discuss / Board
Q.74 Which of the following are building blocks of proteins?
A Amino acids
B Cells
C Bases
D Acids
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Q.75 To get relief from constipation, which of the following is prescribed to be eaten in large amount?
A Protein
B Fish
C Meat
D Fibre
Discuss / Board
Q.76 Which part of a flower develops into a seed?
A Ovary
B Stigma
C Anther
D Ovule
Discuss / Board
Q.77 What is the study of the interactions between living organisms and their environment called?
A Biology
B Ecology
C Geology
D Chemistry
Discuss / Board
Q.78 Which food is a good source of complete protein?
A Lentils
B Eggs
C Spinach
D Rice
Discuss / Board
Q.79 To which of the following groups do whales belong?
A Mammalia
B Pisces
C Amphibia
D Arthropoda
Discuss / Board
Q.80 Foods containing fats and carbohydrates are also called .
A fermented foods
B energy giving foods
C roughage
D body building foods
Discuss / Board
Q.81 Excessive bleeding from wounds may happen due to lack of .
A Vitamin A
B Vitamin C
C Vitamin K
D Vitamin D
Discuss / Board
Q.82 What is the primary function of the excretory system in animals?
A Removal of waste products
B Respiration
C Reproduction
D Digestion
Discuss / Board
Q.83 Epilepsy is a disorder that affects which of the following parts of the human body?
A Heart
B Brain
C Liver
D Kidneys
Discuss / Board
Q.84 Which of the following statements are correct about Ribosomes? Statement A: Ribosomes have no membrane. Statement B: Digestive hydrolytic enzymes are present in Ribosomes. Statement C: These are called suicidal bags. Statement D: Ribosomes play an important role in protein synthesis.
A Only statements A and D
B Only statements A, B and C
C Only statements A and B
D Only statements A and C
Discuss / Board
Q.85 Which of the given options is rod-shaped, carries genetic information, is visible only at cell division and is present in the nucleus?
A Ribosomes
B Chromosomes
C Lysosomes
D Cytoplasm
Discuss / Board
Q.86 Analgesic medicines act on which of the following tissues to relieve pain?
A Adipose tissue
B Collenchyma tissue
C Epithelial tissue
D Nervous tissue
Discuss / Board
Q.87 Chili peppers produce a burning sensation in any tissue with which they come into contact. What is the compound responsible for this?
A Acetic acid
B Capsaicin
C Lycopene
D Formic acid
Discuss / Board
Q.88 If the body of an animal can be divided into two indistinguishable left and right halves through only one plane, then it possesses:
A radial symmetry
B centre of symmetry
C asymmetricity
D bilateral symmetry
Discuss / Board
Q.89 Which of the following possesses the largest isolated single cell?
A Human brain
B Amoeba
C Blue whale
D Ostrich egg
Discuss / Board
Q.90 The percentage of pore space between the particles inside a rock or soil is called:
A Permeability
B Salinity
C Density
D Porosity
Discuss / Board

Master Biology set 1 for All Competitive Exams 2026

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