Biology MCQ Set 1

Biology is a diverse and fascinating science that unveils the mysteries of life on our planet, helping us understand the intricacies of our environment and the natural world. One incredibly useful tool for enhancing our connection with this incredible field of science is Biology Multiple Choice Questions (MCQs).

MCQs are commonly used to test one’s knowledge at both local levels and entrance exams for institutions, but they can also serve as a valuable resource for testing your understanding of biology and scientific literacy. These questions can assist you in areas such as anatomy, general biology, genetics, botany, biological research, and more.

In this blog, we will discuss various aspects of biology MCQs and delve into solving different problems. We aim to provide you with a collection of practical and relevant questions that can enrich your biology coursework and boost your comprehension. Stay with us as we embark on a journey into the realm of biology questions and expand your knowledge!

1. For which of the following diseases first successful vaccination was devloped (it is caused by Variola virus)?

A. Cow pox
B. Chicken pox
C. Small pox
D. Polio

Answer : C.

[Notes: Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. the World Health Organization (WHO) certified the global eradication of the disease in 1980.]

2. What is the name of premature death of cells and living tissue?

A. Neutrophilia
B. Necrosis
C. Neoplasia
D. Nephrosis

Answer : B.

[Notes: Necrosis is the name of premature death of cells and living tissue. It refers to the death of most or all of the cells in an organ or tissue due to disease, injury, or failure of the blood supply.]

3. Even after attaining sexual maturity, the characteristics of the larva remain intact. What is it called?

A. Phylogenesis
B. Neoteny
C. Parthenogenesis
D. Ontogenesis

Answer : B

[Notes: Even after attaining sexual maturity, the characteristics of the larva that remain intact are called Neoteny. Neoteny is found in the Axolotl larva.]

4. Grassy shoot disease of sugarcane is caused by__.

A. Fungi
B. Bacteria
C. Phytoplasma
D. Virus

Answer : C

[Notes: Sugarcane grass shoot disease is caused by Candidatus Phytoplasma sacchari which are small, pleomorphic, pathogenic bacteria.]

5. Which of the following is the largest group of mammals?

A. Rodentia
B. Chiroptera
C. Carnivora
D. Insectivora

Answer : A

[Notes: Rodentia is the largest group of mammals. Rodents are mammals of the rodent order. It is characterized by a pair of continuously moving incisors in each of the upper and lower jaws.]

6. Cirrhosis is a disease that affects which among the following organs?

A. Kidney
B. Liver
C. Pancreas
D. Small intestine

Answer : B.

[Notes: Cirrhosis is a late stage of scarring (fibrosis) of the liver caused by many forms of liver diseases and conditions. Hepatitis and chronic alcohol abuse are frequent causes. Liver damage caused by cirrhosis can’t be undone.]

7. Which among the following is the location of Adrenal Glands in Human Body?

A. Above kidneys
B. Below kidneys
C. Above Medulla Oblongata
D. Near Pancreases

Answer : A.

[Notes: Each adrenal gland is located on the top of each kidney (forming a hat-like structure on the top of the kidneys). Each adrenal gland has two parts viz. outer cortical portion and inner adrenal cortex. Further, there is a central part called adrenal medulla.]

8. Kangaroo is a member of which order?

A. Monotremata
B. Marsupialia
C. Prototheria
D. Insectivora

Answer : B

[Notes: Kangaroo is a mammal with a pouch. It is related to Marsupialia. Prototheria and Monotremata are primitive mammals.]

9. What is the World Health Organization (WHO) criteria for leprosy elimination?

A. 1 case in 1000 individuals
B. 1 case in 10,000 individuals
C. 1 case in 1000,000 individuals
D. 1 case in 10,00,000 individuals

Answer : B.

[Notes: Leprosy is a bacterial disease caused by the bacteria Mycobacterium leprae which affects mainly the skin and nerves. As per WHO guidelines, when the number of leprosy patients gets reduced to below 1 case per 10,000 populations.]

10. Non-vascular embryophytes are __:

A. Pteridophytes
B. Algae
C. Bryophytes
D. Gymnosperms

Answer : C.

[Notes: Bryophytes are an informal group consisting of three divisions of non-vascular land plants: the liverworts, hornworts and mosses. They play a vital role in regulating ecosystems because they provide an important buffer system for other plants.]

11. What are the features of Phylum Mollusca?

A. Less segmented body
B. Typically, open circulatory system
C. Limbs are present
D. All of the above

Answer : D

[Notes: Phylum Mollusca is a large group of animals. They have a bilaterally symmetrical and triploblastic, Less segmented body, well-developed organ and organ system, typically, open circulatory system and Limbs are present.]

12. Which ancient Indian physician is known as the ‘Father of Surgery’?

A. Charaka
B. Sushruta
C. Nagarjuna
D. Vagbhatta

Answer : B.

[Notes: Sushruta practiced during the 5th century B.C. many of his contributions to medicine and surgery preceded similar discoveries in the Western world. He is known as the ‘Father of Surgery’.]

13. What fraction of Human Blood is Plasma?

A. 35%
B. 45%
C. 50%
D. 55%

Answer : D.

[Notes: Blood plasma is the liquid component of whole blood, and makes up approximately 55% of the total blood volume. It is composed primarily of water with small amounts of minerals, salts, ions, nutrients, and proteins in solution. In whole blood, red blood cells, leukocytes, and platelets are suspended within the plasma.]

14. How does calcium carbide ripen mangoes?

A. It reacts with moisture and releases Ethylene
B. It reacts with moisture and releases Acetaldehyde, which in turn releases ethylene
C. It reacts with starch and releases Acetylene
D. It reacts with moisture and releases Ethyne

Answer : A.

[Notes: For reasons of safe transportation of fruits, mangoes, bananas etc are picked before they ripen fully. Slightly green harvested mangoes are subjected to small containers of calcium carbide (CaC₂) with a plastic covering. CaC₂ reacts with the moisture in the air to release acetylene (or ethyne) gas as follows:
CaC₂ + 2 H₂O → C₂H₂ + Ca(OH)₂
This option may give you slightest confusion if you don’t know the difference between Ethylene and Ethyne (Acetylene). Both are chemical substances produced by fruits to accelerate the normal process of fruit maturation — is a ripening hormone. Ethylene is C₂H₄ and has a carbon-carbon double bond. Acetylene is C₂H₂ and has a carbon-carbon triple bind. Acetylene contains more energy and burns hotter than ethylene. Ethylene is a gaseous compound , Acetylene is the chemical compound , which is the simplest alkyne and is also a hydrocarbon while Ethylene is the simplest alkene and classified as an unsaturated hydrocarbon. I hope you will never forget it now.]

15. Biometric is related to which of the following statement?

A. the process of ageing, and the particular problems of old people
B. heredity and variation
C. body measurements and calculations related to human characteristics
D. transmission of paternal traits to progeny

Answer : C.

[Notes: Biometrics are calculations related to body measurements and human characteristics. Biometric authentication is used in computer science as a form of identification and access control.]

FAQ

1. What are Biology MCQs?

Biology MCQs, or Multiple Choice Questions, are a type of assessment or test format used in biology education and assessments. These questions present a stem or question with several answer options, of which only one is the correct or best answer.

2. Why are MCQs used in Biology?

MCQs are used in biology to assess a student’s knowledge and understanding of various biological concepts and topics. They are efficient for testing a wide range of content in a relatively short amount of time, making them popular in exams, quizzes, and assessments.

3. How do I create effective Biology MCQs?

To create effective Biology MCQs, ensure that each question has a clear and concise stem, avoid ambiguous language, provide plausible distractors (incorrect answer choices), and make sure the correct answer is the only logical choice for someone who knows the material.

4. Are there different types of Biology MCQs?

Yes, there are various types of Biology MCQs, including single-best-answer MCQs (where only one answer is correct), multiple-correct-answer MCQs (where more than one answer is correct), true/false MCQs, and matching-type MCQs (matching items from two lists).

5. How can I use Biology MCQs for self-assessment?

You can use Biology MCQs for self-assessment by obtaining practice sets or question banks and working through them. After attempting the questions, review the answers and explanations to identify areas where you need improvement.

6. Where can I find Biology MCQs for practice?

You can find Biology MCQs for practice in textbooks, educational websites, online courses, and dedicated biology exam preparation resources. Many biology textbooks also include practice questions and quizzes.

7. Are Biology MCQs useful for exam preparation?

Yes, Biology MCQs are a valuable tool for exam preparation. They allow you to test your knowledge, identify weak areas, and practice time management for exams that include MCQ sections.

8. How can I improve my performance in Biology MCQ exams?

To improve your performance in Biology MCQ exams, practice regularly, review your mistakes, understand the concepts thoroughly, and consider seeking help or guidance from teachers or tutors if needed.

9. Can I use Biology MCQs for teaching purposes?

Yes, Biology MCQs can be used for teaching purposes. Educators often incorporate MCQs into their teaching materials and assessments to engage students and reinforce key concepts.

10. Are there any online resources for Biology MCQs?

Yes, there are many online resources that offer Biology MCQs for free or as part of paid study materials. Websites, educational platforms, and apps dedicated to biology education often provide a wide range of MCQs for practice and learning.

Thank You

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