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UPSC Exam  >  UPSC Test  >  General Science(Prelims) by IRS Divey Sethi  >  Test: Biology - 3 - UPSC MCQ

Biology - 3 - Free MCQ Practice Test with solutions, UPSC General Science


MCQ Practice Test & Solutions: Test: Biology - 3 (10 Questions)

You can prepare effectively for UPSC General Science(Prelims) by IRS Divey Sethi with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Biology - 3". These 10 questions have been designed by the experts with the latest curriculum of UPSC 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 12 minutes
  • - Number of Questions: 10

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Test: Biology - 3 - Question 1
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Which part of the brain controls conscious activities such as speech, taste, smell, and hearing?

Detailed Solution: Question 1

The grey matter in the brain is responsible for controlling conscious activities such as speech, taste, smell, and hearing. It is the outer part of the cerebrum and plays a key role in intelligence, reasoning, learning, emotions, and other higher functions of the brain.

Test: Biology - 3 - Question 2
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Which division of the nervous system is responsible for controlling involuntary actions like respiration, heart rate, and gland secretion?

Detailed Solution: Question 2

The parasympathetic nervous system is a division of the autonomic nervous system and is responsible for controlling involuntary actions such as respiration, heart rate, and gland secretion. It works in opposition to the sympathetic nervous system, promoting relaxation, comfort, and conservation of energy.

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Test: Biology - 3 - Question 3
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What is the largest cell in our body?

Detailed Solution: Question 3

The neuron is the largest cell in our body. It is a specialized cell of the nervous system that transmits electrical impulses. Neurons have a unique structure with long projections called dendrites and axons, which allow them to communicate with other cells.

Test: Biology - 3 - Question 4
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What is the process of converting food into energy-giving substances called?

Detailed Solution: Question 4

The process of converting food into energy-giving substances is called digestion. It involves the breakdown of complex food molecules into simpler forms that can be absorbed and utilized by the body. Digestion occurs in the digestive system, which includes the alimentary canal and associated digestive glands.

Test: Biology - 3 - Question 5
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Which organ in the human body is responsible for the filtration of waste products from the blood?

Detailed Solution: Question 5

The kidneys are the organs in the human body that are responsible for the filtration of waste products from the blood. They play a crucial role in maintaining the body's internal balance by removing waste, excess water, and toxins from the bloodstream, producing urine as a waste product.

Test: Biology - 3 - Question 6
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Which gland in males secretes a fluid that nourishes and provides motility to the sperms?

Detailed Solution: Question 6

The seminal vesicles are glands in males that secrete a fluid that nourishes and provides motility to the sperms. This fluid, along with sperm from the testes and secretions from other accessory glands, makes up the seminal fluid, which is ejaculated during sexual intercourse.

Test: Biology - 3 - Question 7
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What is the primary function of the uterus in the female reproductive system?

Detailed Solution: Question 7

The primary function of the uterus in the female reproductive system is the implantation and development of the embryo. After fertilization, the embryo implants into the uterine wall and receives nutrients and oxygen from the mother through the placenta. The uterus provides a suitable environment for the growth and development of the fetus.

Test: Biology - 3 - Question 8
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Which type of cell division is involved in the formation of gametes?

Detailed Solution: Question 8

The formation of gametes involves a special type of cell division called meiosis. Meiosis consists of two rounds of division, resulting in the formation of four haploid cells (gametes) with half the number of chromosomes as the parent cell. This process ensures genetic diversity in the offspring.

Test: Biology - 3 - Question 9
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What is the function of the cell wall in plant cells?

Detailed Solution: Question 9

The cell wall in plant cells serves the function of providing protection and support to the cell. It is a rigid structure composed of cellulose and other polysaccharides, giving plant cells their characteristic shape and preventing them from bursting under osmotic pressure. The cell wall also provides mechanical strength and protection against external stresses.

Test: Biology - 3 - Question 10
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Which type of reproduction involves the formation and fusion of gametes?

Detailed Solution: Question 10

Sexual reproduction involves the formation and fusion of gametes, which are specialized cells involved in reproduction. This type of reproduction results in the formation of offspring that are genetically different from their parents. It is the most common form of reproduction in higher organisms.

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About this UPSC Practice Test

This test contains 10 MCQs on Biology - 3 with detailed solutions for each question. It is part of the General Science(Prelims) by IRS Divey Sethi course on EduRev, designed to align with the current UPSC syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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