Biology Questions and Answers updated daily – General Knowledge

Biology Questions: Solved 194 Biology Questions and answers section with explanation for various online exam preparation, various interviews, General Knowledge Category online test. Category Questions section with detailed description, explanation will help you to master the topic.

Biology Questions

1. Which of the following does not show heterotrophic nutrition?




SHOW ANSWER
Correct Ans:Green plants
Explanation:
There are two modes of nutrition in living beings.

Autotrophic nutrition- Autotrophic nutrition means that simple inorganic substances are taken in and used to synthesise organic molecules. Energy is needed to achieve this. Plants are examples of autotrophic nutrition since they make food with the help of sunlight, nitrogen, water and other nutrients from the environment.

Heterotrophic nutrition- Heterotrophic nutrition is the mode of nutrition in which organisms depend upon other organisms to survive. All animals and non green plants are heterotrophic. Heterotrophic organisms have to acquire and take in all the organic substances they need to survive.

Except green plants, all other options are heterotrophic.

Hence, option D is correct.
Workspace



2. What is considered as a normal blood pressure In humans?




SHOW ANSWER
Correct Ans:120/80 mm hg
Explanation:
Blood pressure (BP) is the pressure of circulating blood on the walls of blood vessels. It is measured by an instrument named sphygmomamometer. 120/80 mm hg is considered to be normal blood pressure.

Hence, option B is correct.
Workspace



3.
Which of the following is the smallest gland present in the body?




SHOW ANSWER
Correct Ans:Pituitary gland
Explanation:
The smallest gland present in the body is pituitary gland. The pituitary gland is a tiny organ, the size of a pea, found at the base of the brain. As the “master gland” of the body, it produces many hormones that travel throughout the body, directing certain processes or stimulating other glands to produce other hormones.

Hence, option B is correct.
Workspace



4. Where is bile juice secreted in human body?




SHOW ANSWER
Correct Ans:Liver
Explanation:
Bile juice is a greenish yellow secretion that is produced in the liver and passed to the gallbladder for concentration, storage, or transport into the first region of the small intestine, the duodenum. Its function is to aid in the digestion of fats in the duodenum.

Hence, option D is correct.
Workspace



5. Which of the following is not an algae?




SHOW ANSWER
Correct Ans:Ferns
Explanation:
Algae belong to cryptogames (plant without seed). It has chlorophyll. Common examples of algae are- Porphyra , Ulva, Surgassum, Anabina, Fucus, Belonia etc.Ferns are not algae.

Hence, option E is correct
Workspace



6. This genetic disorder occurs due to an additional chromosome added to 21st autosomal chromosome and result into mental retardness, eyes protruded an irregular physical structure. Which of the following is this?            




SHOW ANSWER
Correct Ans:Down ’ s syndrome
Explanation:
In human, each cell contains 46 chromosomes. Any addition or deletion in the number of sex chromosome or autosome causes genetic disorder. Down’s syndrome is one of them. When an extra chromosome is added to autosomal chromosome this leads to Down’s syndrome. The person is mentally retarded, eyes protruded an irregular physical structure.

Hence, option C is correct.
Workspace



7. What is the chromosomal condition of a zygote developing into a male?




SHOW ANSWER
Correct Ans:Male chromosome Y and female chromosome X
Explanation:
In human male sex chromosome is XY where as in female sex chromosome is XX. When a male gamete (sperm) carrying X chromosome fertilize an ova, the zygote develop into female where as sperm carrying Y chromosome fertilizes an egg to develop zygote into male. Female chromosome is X in both the cases.

Hence, option B is correct.
Workspace



8. What does mutation of genes mean?




SHOW ANSWER
Correct Ans:Sudden change in gene which is inheritable
Explanation:
Mutation is a sudden and permanent change in the gene mostly due to environmental (external) reasons such as ultraviolet radiation from the sun. It is heritable from one generation to another. A gene mutation is a permanent alteration in the DNA sequence that makes up a gene.

Hence, option E is correct.
Workspace



9. Respiratory disease, cardiovascular disease, throat inflammation, chest pain, and congestion, these diseases occur due to which pollution?




SHOW ANSWER
Correct Ans:Ozone Pollution
Explanation:
Adverse air quality can kill many organisms including humans. Ozone pollution can cause respiratory disease, cardiovascular disease, throat inflammation, chest pain, and congestion.
Workspace



10. A group of archaebacteria is used in the production of




SHOW ANSWER
Correct Ans:Methane
Explanation:
Archaebacteria sub-kingdom of the kingdom Prokaryote, which on the basis of both RNA and DNA. Archaebacteria have unique protein-like cell walls and cell membrane simple organic compounds such as methanol and acetate as food, combining them with carbon dioxide and hydrogen gas from the air and releasing methane as a byproduct.
Workspace



11. Which of the following is not a connective tissue?




SHOW ANSWER
Correct Ans:Cardiac Muscle
Explanation:
Cardiac Muscle is not a connective tissue.
Workspace



12. Which of the following in biology is the energy currency of cells?




SHOW ANSWER
Correct Ans:ATP
Explanation:
The process of releasing energy from food is called respiration. The energy is stored in the form of ATP (Adenosine tri phosphate) in the body cells which is used for various purposes like contraction of muscles, conduction of nerve impulses, synthesis of proteins and many other activities related to the functioning of cells. Therefore, ATP is known as the energy currency of cells.
Workspace



13. Which bacteria spread Meningitis?




SHOW ANSWER
Correct Ans:Neisseria
Explanation:
Bacterial Neisseria meningitis is very serious and can be deadly. Death can occur in as little as a few hours. Most people recover from meningitis. However, permanent disabilities (such as brain damage, hearing loss, and learning disabilities) can result from the infection.
Workspace



14. Wisdom teeth is the ________.




SHOW ANSWER
Correct Ans:3rd molar teeth
Explanation:
A wisdom tooth is third molar of the human dentition. Wisdom teeth generally erupt between the ages of 17 and 25.
Workspace



15. The study of chemical reactions in relation to life activities is _________.




SHOW ANSWER
Correct Ans:Biochemistry
Explanation:
Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms. Biochemical processes give rise to the complexity of life.
Workspace



16. Phytotron is a facility to




SHOW ANSWER
Correct Ans:grow plants under controlled conditions
Explanation:
Phytotron is a type of chamber, designed to provide a controlled environment for the study of plant growth.
Workspace



17. The major food fuel during exercise of long duration is




SHOW ANSWER
Correct Ans:Carbohydrate
Explanation:
The major food fuel during exercise of long duration is carbohydrates because it provides more energy after oxidation of one molecule of glucose than other substance.
Workspace



18. Deforestation is the major causal agent of _________.




SHOW ANSWER
Correct Ans:Both A, B, and C
Explanation:
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Workspace



19. Asthma disease is caused by which fungi?




SHOW ANSWER
Correct Ans:Aspergillus fumigates
Explanation:
Asthma is caused by Aspergillus Fumigates fungi. Symptoms of Asthma are shortness of breathing, chest tightness or pain, coughing, wheezing etc.
Workspace



20. Linseed is a rich source of




SHOW ANSWER
Correct Ans:Omega-3 fatty acid
Explanation:
Linseed is a food and fibre crop that is grown in cooler regions of the world. The oil is extracted from its seed, known as lineseed oil, which is a very good source of omega 3 fatty acid, which is able to prevent the deposition of fat in blood vessels.
Workspace



Are you seeking for good platform for practicing Biology questions in online. This is the right place. The time you spent in Fresherslive will be the most beneficial one for you.

Online Test on Biology @ Fresherslive

This page provides important questions on Biology along with correct answers and clear explanation, which will be very useful for various Interviews, Competitive examinations and Entrance tests. Here, Most of the Biology questions are framed with Latest concepts, so that you may get updated through these Biology Online tests. Biology Online Test questions are granted from basic level to complex level.

Why To Practice Biology Test questions Online @ Fresherslive?

Biology questions are delivered with accurate answer. For solving each and every question, very lucid explanations are provided with diagrams wherever necessary.
Practice in advance of similar questions on Biology may improve your performance in the real Exams and Interview.
Time Management for answering the Biology questions quickly is foremost important for success in Competitive Exams and Placement Interviews.
Through Fresherslive Biology questions and answers, you can acquire all the essential idea to solve any difficult questions on Biology in short time and also in short cut method.
Winners are those who can use the simplest method for solving a question. So that they have enough time for solving all the questions in examination, correctly without any tense. Fresherslive provides most simplest methods to answer any tough questions. Practise through Fresherslive test series to ensure success in all competitive exams, entrance exams and placement tests.

Why Fresherslive For Biology Online Test Preparation?

Most of the job seekers finding it hard to clear Biology test or get stuck on any particular question, our Biology test sections will help you to success in Exams as well as Interviews. To acquire clear understanding of Biology, exercise these advanced Biology questions with answers.
You're Welcome to use the Fresherslive Online Test at any time you want. Start your beginning, of anything you want by using our sample Biology Online Test and create yourself a successful one. Fresherslive provides you a new opportunity to improve yourself. Take it and make use of it to the fullest. GOODLUCK for Your Bright Future.


Online Test for Data Interpretation
Online Test for C Language
FreshersLive - No.1 Job site in India. Here you can find latest 2022 government as well as private job recruitment notifications for different posts vacancies in India. Get top company jobs for both fresher and experienced. Job Seekers can get useful interview tips, resume services & interview Question and answer. Practice online test free which is helpful for interview preparation. Register with us to get latest employment news/rojgar samachar notifications. Also get latest free govt and other sarkari naukri job alerts daily through E-mail...
DMCA.com Protection Status