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VIDYANAND JHA
I’m an accidental blogger and a microbiologist by education. I have dedicated my past 5+ years of learning to the field of life science. helping numerous individuals and providing useful educational content around the globe to help them grow in the field of biology. Helping others grow has always been my biggest driving force, and this story will tell you about the important time period of this journey.
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Respiratory Quotient & Factors Affecting Respiration MCQ Test | Topic-Wise NEET Biology
Practice topic-wise NEET Biology MCQs on Respiratory Quotient (RQ) and Factors Affecting Respiration based on NCERT concepts. Test your unde...
Fermentation & Amphibolic Pathway – Alcoholic, Lactic Acid MCQ Test | Topic-Wise NEET Biology
Practice topic-wise NEET Biology MCQs on Fermentation and Amphibolic Pathway, covering alcoholic fermentation, lactic acid fermentation, and...
Electron Transport System & Oxidative Phosphorylation MCQ Test | Topic-Wise NEET Biology
Practice topic-wise NEET Biology MCQs on the Electron Transport System (ETS) and Oxidative Phosphorylation based on NCERT concepts. Test you...
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Biodiversity and Conservation Biology Notes - Levels, Patterns, Loss, Conservation, Hotspots and Protected Areas
Learn about biodiversity levels, patterns, loss, conservation strategies, hotspots and protected areas, with examples from India.
Microbes in Human Welfare Biology Notes - Household, Industrial, Sewage Treatment, Biogas, Biocontrol and Biofertilizers
Explore how microbes are used in household products, food fermentation, industrial processes, sewage treatment, biogas, biocontrol and biofertilizers.
Human Health and Diseases Biology Notes - Common Diseases, Immunity, AIDS, Cancer, Drugs and Adolescence
Overview of common diseases, immune system basics, AIDS, cancer, drug effects and health considerations for adolescents.
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Practice questions contributed by this author
Why do echinoderms exhibit bilateral symmetry in their larval stage but radial symmetry as adults?
Larval Stage: Bilateral symmetry enables free-swimming larvae to balance and move efficiently in open water. Adult Stage: Adult echinoderms live on the seafloor (benthic zone). Pentaradial symmetry allows them to feed and detect surroundings equally from all directions.
Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, physiology, human health and related concepts as per latest syllabus.
Which of the following statements about frog locomotion is correct?
Hindlimbs: Muscular, elongated, and webbed with five digits. They propel the frog forward during leaping on land and paddling in water. Forelimbs: Short and unwebbed with four digits, designed to support the body and absorb landing impact.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Structural Organisation in Animals and Frog, Topic: Tissues, skeletal and organ systems.
What is the probability of a son inheriting an X-linked recessive disorder if his mother is a carrier?
A son has a 50% chance of inheriting an X-linked recessive disorder from a carrier mother, as he receives one X chromosome from his mother. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept.