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SSC CGL Exam  >  SSC CGL Test  >   Previous Year Papers  >  Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - SSC CGL MCQ

SSC CGL Previous Year Questions: Biology (2023-20) - 6 with solutions -


MCQ Practice Test & Solutions: Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 (100 Questions)

You can prepare effectively for SSC CGL SSC CGL Previous Year Papers with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6". These 100 questions have been designed by the experts with the latest curriculum of SSC CGL 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 60 minutes
  • - Number of Questions: 100

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Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 1
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In which year did Walther Flemming coin the term ‘chromatin’ for the stained substance found in the cell nucleus?
[SSC CGL 25/07/2023 (3rd shift)]

Detailed Solution: Question 1

1879. Chromatin is a substance in the chromosome consisting of DNA and proteins, Consists of Histones which helps in compacting the DNA to fit into the cell nucleus.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 2
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Which among the following are commonly known as blood thinners?
[SSC MTS 18/05/2023 (Morning)]

Detailed Solution: Question 2

Anticoagulants - Medicines that help prevent blood clots. Antibodies - Proteins produced by the body's immune system when they detect harmful substances, called antigens (Bacteria, fungi, parasites, and viruses). Anti-caking - Absorption of excess moisture or by coating particles to make them more water repellant.

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Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 3
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Who explained the structure and reproductive system of algae in 1935?
[SSC CGL Tier II (06/03/2023)]

Detailed Solution: Question 3

FE Fritsch - In his book “The Structure and Reproduction of the Algae” proposed a system of classification of algae. He treated algae giving the rank of division and divided it into 11 classes. His classification of algae is mainly based upon characters of pigments, flagella, and reserve food material. Parthasarathy Iyengar - Father of Indian Phycology.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 4
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A renowned scientist observed that the presence of green mould prevented the growth of bacteria. Who is the scientist and which discovery did this observation lead to?
[SSC MTS 18/07/2022 (Evening)]

Detailed Solution: Question 4

Alexander Fleming, Penicillin. Penicillins are used in the treatment of throat infections, meningitis, syphilis, and various other infections. It is in the beta-lactam antibiotic class of drugs.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 5
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With whom did Camillo Golgi receive the Nobel Prize in 1906 for his work on the structure of the nervous system?
[SSC CHSL 07/06/2022 (Morning)]

Detailed Solution: Question 5

(d) Santiago Ramón y Cajal. Ettore Marchiafava (known for his study of Malaria). Cesare Lombroso (gave the biological theory of criminology).

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 6
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Antonie van Leeuwenhoek was known for which discovery in the late 17th century?
[SSC CHSL 07/06/2022 (Afternoon)]

Detailed Solution: Question 6

(b) Observation of bacteria and protozoa. Leeuwenhoek (father of microbiology) discovered both protists and bacteria. Properties of a stem cell (Ernest McCulloch and James Till), ATP molecule (Karl Lohmann), and Nucleus in the cell (Robert Brown).

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 7
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For what discovery was Jan Evangelista Purkinje known in 1839?
[SSC CHSL 10/06/2022 (Morning)]

Detailed Solution: Question 7

(c) Coined the term protoplasm (1839), David Robertson - Proposed a lipid bilayer membrane.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 8
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In 1879, who observed cell division in salamander embryos, where cells divide at fixed intervals?
[SSC CHSL 10/06/2022 (Afternoon)]

Detailed Solution: Question 8

(c) Walther Flemming was a pioneer of cytogenetics, a field of science that analyses structures and processes in the cell nucleus under a microscope. He also discovered animal chromosomes. Albert von Kolliker is best known for his contributions to histology, the knowledge of the minute structure of the animal tissues. Garth L. Nicolson made a landmark scientific model for cell membrane, known as the Fluid Mosaic Model.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 9
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In which year did Rudolf Virchow publish an essay titled ‘Cellular Pathology’ in which he famously declared that "every cell arises from another cell”?
[SSC CHSL 10/06/2022 (Evening)]

Detailed Solution: Question 9

(d) 1855. Rudolf Virchow found cells in bone and connective tissue and described substances such as myelin. He was also the first person to explain the mechanism of pulmonary thromboembolism. He was the first person to recognize leukemia.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 10
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What does Ichthyology deal with?
[SSC MTS 05/10/2021 (Afternoon)]

Detailed Solution: Question 10

Study of reptiles and amphibians: Herpetology. Study of birds: Ornithology. Study of insects: Entomology.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 11
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In the energy flow diagram of an ecosystem, the flow of energy comes to herbivores from:
[SSC CHSL Tier II 10/01/2024]

Detailed Solution: Question 11

Producers - They are Autotrophs, make their food by using Sunlight and are placed at the first trophic level. Producers are consumed by Herbivores, which are placed at the second trophic level. Herbivores are consumed by Carnivores. The Pyramid of energy which is upright reflects that the energy flow in a food chain is always unidirectional. Also, with every increasing trophic level, some energy is lost into the environment. This means Energy is maximum at the first trophic level.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 12
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What is the basic requirement for an ecosystem to function and sustain?
[Matric Level 27/06/2023 (Shift - 1)]

Detailed Solution: Question 12

Functional Aspects of Ecosystem: Productivity, decomposition, energy flow, and nutrient cycles.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 13
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The normal temperature of the human body is___________.
[SSC MTS 02/05/2023 (Morning)]

Detailed Solution: Question 13

A temperature above 100.4°F (38°C) indicates an infection or illness. Anders Celsius (Swedish astronomer) created a temperature scale that was the reverse of the scale now known as Celsius. Formula: (°F − 32) × 5/9 = °C.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 14
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What do you call the type of drugs that mimic the natural messenger by switching on the receptor?
[SSC CGL Tier II (02/03/2023)]

Detailed Solution: Question 14

Stimulants are a class of drugs that speed up messages travelling between the brain and body. Examples: Caffeine, nicotine, amphetamines, cocaine, etc.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 15
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Nutritional care during illness is an organised group of activities which consists of all of the following, EXCEPT:
[SSC CGL Tier II (07/03/2023)]

Detailed Solution: Question 15

The Nutrition Care Process (NCP) is a systematic approach to providing high-quality nutrition care. The NCP consists of four distinct, interrelated steps: Nutrition Assessment, Nutrition Diagnosis, Nutrition Intervention, Nutrition Monitoring/Evaluation.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 16
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Who is the father of modern ecology?
[SSC CGL 13/12/2022 (1st Shift)]

Detailed Solution: Question 16

Robert Brown discovered the nucleus of the cell (1831). Charles Darwin formulated the theory of evolution by natural selection in his work On the Origin of Species (1859).

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 17
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In ecology, ______ is determined by dividing the biomass per unit area by the age of the ecosystem.
[SSC CPO 09/11/2022 (Morning)]

Detailed Solution: Question 17

In ecology, the term productivity refers to the rate of generation of biomass in an ecosystem. Units of biomass are grams per metre square (g/m²).

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 18
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Which of the following statements is correct?
I. Converting plant and animal waste including that from kitchen into manure is called composting.
II. The method of making compost from kitchen garbage using redworms is called vermicomposting.
[SSC MTS 14/07/2022 (Evening)]

Detailed Solution: Question 18

Composting means breaking down organic material. There are three types of composting: aerobic, anaerobic, and vermicomposting.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 19
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The green plants in a terrestrial ecosystem capture about _____ of the energy of sunlight that falls on their leaves and convert it into food energy.
[SSC MTS 22/07/2022 (Afternoon)]

Detailed Solution: Question 19

The rate of photosynthesis is maximum in Red light and minimum in green light. The only metal present in chlorophyll - Magnesium. The Chlorophyll (C55H72MgN4O5) helps plants to absorb energy from the sun as they undergo the process of photosynthesis.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 20
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When the bread rises and bakes, ______ creates thousands of bubbles in the dough.
[SSC MTS 25/07/2022 (Evening)]

Detailed Solution: Question 20

Bread rises because yeast eats sugar and burps carbon dioxide, which gets trapped by the bread’s gluten. The more sugar yeast eats, the more gas that gets formed, and the higher the bread rises.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 21
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Which level of the food chain includes millipede, springtails, woodlice, dung flies and slugs that feed on the dead or decaying plants or animals?
[SSC CHSL 24/05/2022 (Morning)]

Detailed Solution: Question 21

Detritivores - An organism (such as an earthworm or a fungus) that feeds on dead and decomposing organic matter.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 22
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A balanced diet takes care of all the following aspects, EXCEPT one. Identify the aspect.
[SSC CHSL 30/05/2022 (Evening)]

Detailed Solution: Question 22

Promotes a healthy mind. The 7 components of a balanced diet are Carbohydrates, Proteins, Fats, Vitamins, Minerals, Fibre and Water.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 23
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What is a way in which adaptation does NOT take place?
[SSC CHSL 01/06/2022 (Afternoon)]

Detailed Solution: Question 23

Adaptations are of three types: Morphological adaptation is a structural change which gives an organism a greater chance of survival in its habitat. Behavioural adaptations are changes in behaviour that certain organisms or species use to survive in a new environment. Physiological adaptation is an internal change that animals and plants go through to ensure their survival in their environment.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 24
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Why are species of moss used as fuel?
[SSC CHSL 06/06/2022 (Morning)]

Detailed Solution: Question 24

Moss, (division Bryophyta) are small nonvascular spore-bearing land plants. They are distributed throughout the world except in salt water. Peat derived from Peat moss can be used as a fuel or as packing material for trans-shipment of living material because of their high water holding capacity.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 25
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The foul smell from a body especially during a sultry summer is due to the action of ______ on sweat.
[SSC CGL 12/04/2022 (Morning)]

Detailed Solution: Question 25

Melanin is a substance in your body that produces hair, eye and skin pigmentation. Moisture - water in small drops on a surface, in the air, etc. A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 26
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Saccharomyces Cerevisiae is commonly used to make ______.
[SSC CGL 19/04/2022 (Morning)]

Detailed Solution: Question 26

It is known as “brewer's yeast” or “baker's yeast”. Saccharomyces cerevisiae, a type of budding yeast, is able to ferment sugar into carbon dioxide and alcohol and is commonly used in the baking and brewing industries.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 27
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Colloidal systems - such as gum, starch, proteins, cellulose, agar, and gelatine - when placed in water, will absorb a large volume of water and swell up. These substances are called ______.
[SSC CGL 21/04/2022 (Afternoon)]

Detailed Solution: Question 27

Imbibants: It is the solid substance which absorbs water and swells up. Porins are pore proteins contained in the outer membrane of Gram-negative bacteria and they mediate the diffusion of small hydrophilic molecules. Inside a plant, the apoplast is the space outside the plasma membrane within which material can diffuse freely. Combustibles are any material or surface that can burn.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 28
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What do you call the maximum sustainable size of a resident population in a given ecosystem?
[SSC CGL 21/04/2022 (Evening)]

Detailed Solution: Question 28

Carrying capacity can be defined as a species' average population size in a particular habitat. Carrying capacity is the maximum number of a species an environment can support indefinitely.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 29
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What is the term 'circadian rhythm' associated with?
[SSC MTS 14/10/2021 (Afternoon)]

Detailed Solution: Question 29

A circadian rhythm or circadian cycle, is a natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Test: SSC CGL Previous Year Questions: Biology (2023-20) - 6 - Question 30
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A/an ______ is any substance that causes your immune system to produce antibodies against it.
[SSC MTS 02/11/2021 (Evening)]

Detailed Solution: Question 30

Antigen is composed of proteins, peptides, and polysaccharides. Any portion of bacteria or viruses, such as surface protein, coat, capsule, toxins, and cell wall, can serve as antigens.

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