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.151 Identify the structure that controls the size of the pupil.
A Vitreous humour
B Iris
C Ciliary muscles
D Cornea
Discuss / Board
Q.152 Identify an organelle found both in eukaryotic as well as prokaryotic.
A Endosomes
B Ribosomes
C Lysosomes
D Mitochondria
Discuss / Board
Q.153 To what phylum does a blood sucking leech belong?
A Arthropoda
B Nematoda
C Platyhelminthes
D Annelida
Discuss / Board
Q.154 The body of the phylum is unsegmented and dorsoventrally flattened.
A Coelenterata
B Arthropoda
C Platyhelminthes
D Mollusca
Discuss / Board
Q.155 Which term was first used by Ernst Haeckel in 1866 to refer to 'the relation of animals to both the organic as well as the inorganic environment'?
A Biosphere
B Ecosystem
C Ecology
D Biome
Discuss / Board
Q.156 Identify the organism that shows bioluminescence.
A Earthworm
B Amoeba
C Firefly
D Tapeworm
Discuss / Board
Q.157 Which hairpin-like structure serves to anchor and stabilise the tick's mouthparts to its host's skin and to channel the exchange of fluids?
A Peduncle
B Substratum
C Hypostome
D Trunk
Discuss / Board
Q.158 What is the fourth step in mitosis where non-kinetochore spindle fibres lengthen and elongate the cell?
A Telophase
B Metaphase
C Anaphase
D Prophase
Discuss / Board
Q.159 Which bacteria have a thick cell wall with several layers of peptidoglycan and teichoic acid?
A Staphylococcus aureus
B Pseudomonas aeruginosa
C Salmonella enterica
D Escherichia coli
Discuss / Board
Q.160 Which of the following is required by the aquatic animals to breathe under water?
A Dissolved CO2
B Dissolved H2 S
C Dissolved Oxygen
D Dissolved Nitrogen
Discuss / Board
Q.161 In humans sound is produced by voice box. What is the other name used for voice box?
A Larynx
B Lymph Nodes
C Pharynx
D Wind pipe
Discuss / Board
Q.162 AIDS is an abbreviation for:
A Acquire Immuno Deficiency Syndicate
B Acquired Immuno Deficiency Syndrome
C Acquired Immuno Deficiency Syndicate
D Acquired Immunic Deficiency Syndrome
Discuss / Board
Q.163 What is called the powerhouse of the cell?
A Nucleus
B Cytoplasm
C Chloroplast
D Mitochondria
Discuss / Board
Q.164 Foods like pizza, burger are rich in:
A Vitamins
B carbohydrates
C proteins
D Minerals
Discuss / Board
Q.165 Deficiency of iodine primarily affects which gland?
A Pineal
B Thyroid
C Gastric glands
D Pituitary
Discuss / Board
Q.166 Which of the following items has a high fibre content?
A Meat
B Eggs
C Whole grains
D Milk
Discuss / Board
Q.167 What are ribosomes made up of?
A Proteins and RNA
B Only proteins
C Only DNA
D Only RNA
Discuss / Board
Q.168 Which of the following is a cellular organelle involved in lipid synthesis and detoxification?
A Nucleus
B Golgi apparatus
C Smooth endoplasmic reticulum
D Mitochondrion
Discuss / Board
Q.169 Compounds like gingerol, paradol, shogaols and zingerone are produced by a plant belonging to which group?
A bryophyta
B gymnosperms
C angiosperms
D pteridophyta
Discuss / Board
Q.170 In the context of movement of cells, exocytosis is the process by which:
A cell death is brought about through a heavily regulated sequence of events
B cells move waste materials from within the cell into the extracellular fluid
C cells absorb external material by engulfing it with the cell membrane
D a cell takes in the fluids along with dissolved small molecules
Discuss / Board
Q.171 Which of the following was discovered by GN Ramachandran?
A Golgi bodies
B Plasma membrane
C Triple helical structure of collagen
D Fluid mosaic model of a cell
Discuss / Board
Q.172 Who is credited with discovering ribosomes using electron microscopy?
A Albert Von Kolliker
B George E Palade
C Pierre Joseph Pelletier
D James Thomson
Discuss / Board
Q.173 Identify the INCORRECT pair of cell shape types and their examples.
A Elongated - Muscle cells
B Oval - Chlamydomonas
C Irregular - Amoeba
D Oblong - Nerve cells
Discuss / Board
Q.174 Which of the following is commonly found in the salivary glands of dipteran insects?
A giant chromosome polytene
B presence of fat digestive enzymes
C giant chromosome lampbrush
D presence of minute chromosomes
Discuss / Board
Q.175 In which of the following animals are the stinging capsules located around the mouth and on the tentacles?
A Taenia
B Nereis
C Adamsia
D Ascaris
Discuss / Board
Q.176 Which chromosome is involved in the production of 'masked' mRNAs for early development?
A Sex chromosome
B Lampbrush chromosome
C Polytene chromosome
D Autosomal chromosome
Discuss / Board
Q.177 The main location for ATP production in a eukaryotic cell is:
A Mitochondria
B Nucleus
C Ribosome
D Lysosome
Discuss / Board
Q.178 What is the name of the disease that can be caused by Vitamin D deficiency in children?
A Osteoporosis
B Scurvy
C Rickets
D Bleeding diathesis
Discuss / Board
Q.179 Which of the following mature mammalian cells typically lacks a nucleus and organelles?
A Guard cells
B Red blood cells
C White blood cells
D Nerve cells
Discuss / Board
Q.180 Who among the following was the first to describe the nucleus as a cell organelle?
A Robert Brown
B Robert Koch
C LucioFontana
D Eduard Strasburger
Discuss / Board

Master Biology set 1 for All Competitive Exams 2026

Practicing Biology set 1 MCQs is one of the most effective ways to prepare for competitive examinations in 2026. This topic-wise question bank contains carefully selected multiple-choice questions designed to strengthen conceptual understanding, improve accuracy, and enhance problem-solving speed. Our collection includes beginner, intermediate, and advanced-level questions frequently asked in JKSSB, SSC, Banking, Railway, Police, Defence, State PSC, and various national-level examinations. Every question is structured to reflect real exam patterns and helps candidates become familiar with objective-type assessment formats. Instant answer verification enables students to identify mistakes immediately and learn the correct approach without wasting valuable preparation time. Regular practice of topic-wise MCQs improves retention, reinforces key concepts, and develops confidence required to perform well under exam pressure. Whether you are revising important concepts, preparing for an upcoming recruitment test, or strengthening weak areas, these practice questions provide a reliable platform for continuous improvement. Consistent participation in MCQ-based learning sessions can significantly increase your chances of achieving higher scores and better ranks in competitive examinations.

For additional MCQs, detailed explanations, and exam discussions, visit Ask JK Exam Library , our dedicated question-and-answer platform for competitive exam aspirants.

Frequently Asked Questions

Select individual options to trigger real-time validation matrix hooks. This evaluates your answers instantly and shows the correct methodology in the solution box.

Absolutely. Our content team regularly updates the question bank to reflect the latest JKSSB, SSC, Banking, Railways, Defence, and other competitive exam trends.

The number of questions varies by topic and is regularly expanded to provide comprehensive practice coverage for competitive examinations.

Yes, you can attempt the questions as many times as needed to improve accuracy, speed, and concept retention.

Yes, important questions are accompanied by explanations and solutions to help candidates understand the correct answers effectively.

Yes, this topic is frequently covered in various competitive examinations and forms an important part of exam preparation strategies.

Absolutely. The questions are suitable for both beginners and advanced learners preparing for competitive examinations.

Topic-wise practice helps identify weak areas, strengthen concepts, and build confidence before attempting full-length mock tests.

Yes, the question database is continuously updated with new MCQs to maintain relevance and align with changing exam patterns.

Regular practice with topic-wise MCQs helps candidates reduce mistakes, improve accuracy, and perform better in actual examinations.

Yes, topic-specific MCQs provide a quick and effective revision method for reinforcing important concepts before exams.

The question bank includes a mix of easy, moderate, and challenging questions designed to reflect real competitive exam standards.

Solution View

Correct Answer
Detailed Explanation: