NEET · Biology doubts
340 doubts found
I keep getting “Plant hormones” questions wrong in Plant Growth & Development. What's the trap?
thinking one hormone controls everything.
I keep getting “Sliding filament theory” questions wrong in Locomotion & Movement. What's the trap?
thinking the filaments themselves shrink.
I keep getting “Pollination” questions wrong in Sexual Reproduction in Flowering Plants. What's the trap?
confusing pollination (pollen transfer) with fertilisation (gamete fusion).
What does “Fermentation by microbes” actually mean in Microbes in Human Welfare, and why does it matter for NEET?
microbes break down sugars anaerobically into useful products — lactic acid (curd), or ethanol and CO₂ (bread, alcohol).
What does “Law of segregation” actually mean in Principles of Inheritance and Variation, and why does it matter for NEET?
the two alleles of a gene separate during gamete formation, so each gamete carries only one of them.
What does “Semiconservative replication” actually mean in Molecular Basis of Inheritance, and why does it matter for NEET?
each new DNA molecule keeps one old (parental) strand and one newly made strand.
I keep getting “Natural selection” questions wrong in Evolution. What's the trap?
thinking organisms deliberately change their traits to adapt.
I keep getting “Myogenic heart and the SAN” questions wrong in Body Fluids and Circulation. What's the trap?
thinking the brain fires every heartbeat.
What does “Reflex arc” actually mean in Neural Control and Coordination, and why does it matter for NEET?
a rapid pathway -- receptor, sensory neuron, spinal cord, motor neuron, effector -- that acts without waiting for the brain.
I keep getting “Ecological pyramids” questions wrong in Ecosystem. What's the trap?
assuming every ecological pyramid is upright.
I keep getting “Cloning vector” questions wrong in Biotechnology - Principles and Processes. What's the trap?
confusing the vector with the host cell.
I keep getting “Active vs passive immunity” questions wrong in Human Health and Disease. What's the trap?
calling a vaccine passive immunity.
What does “Ribosomes” actually mean in Cell: The Unit of Life, and why does it matter for NEET?
tiny non-membrane-bound structures that build proteins.
What does “Carbohydrates” actually mean in Biomolecules, and why does it matter for NEET?
sugars and their polymers — the cell's quick energy source and structural material (cellulose).
What does “Crossing over” actually mean in Cell Cycle & Cell Division, and why does it matter for NEET?
the exchange of segments between homologous chromosomes during meiosis, creating variation.
What is the difference between light reaction and dark reaction?
The light reaction (thylakoid) needs light and makes ATP/NADPH + O₂; the dark reaction (stroma) fixes CO₂ into sugar using those products.
What does “ATP” actually mean in Respiration in Plants, and why does it matter for NEET?
Adenosine Triphosphate, the cell’s immediate energy currency, is synthesised during respiration and used instantly for cellular work.
What does “Peristalsis” actually mean in Digestion & Absorption, and why does it matter for NEET?
the wave-like muscular contractions that push food along the gut.
What does “Mechanism of breathing” actually mean in Breathing & Exchange of Gases, and why does it matter for NEET?
the diaphragm and intercostal muscles change chest volume to draw air in and push it out.
What is the difference between artery and vein?
Arteries carry blood away from the heart under high pressure with thick walls; veins return blood to the heart at low pressure and have valves.
What does “ADH regulation” actually mean in Excretory Products & Elimination, and why does it matter for NEET?
antidiuretic hormone controls how much water is reabsorbed, concentrating the urine.
What is the difference between CNS and PNS?
The central nervous system is the brain and spinal cord (processing); the peripheral nervous system is the nerves connecting them to the body.
What does “Pituitary gland” actually mean in Chemical Coordination (Endocrine System), and why does it matter for NEET?
the 'master gland' that controls several other endocrine glands.
What does “Sex-linked inheritance” actually mean in Principles of Inheritance & Variation, and why does it matter for NEET?
genes on the X chromosome (like those for haemophilia and colour blindness) affect males more often.