NEET · Biology doubts
340 doubts found
I keep getting “Crossing over” questions wrong in Cell Cycle & Cell Division. What's the trap?
thinking crossing over happens in mitosis.
What is the difference between C3 plants and C4 plants?
C3 plants fix CO₂ directly via the Calvin cycle; C4 plants (like maize) first fix it into a 4-carbon acid, making them more efficient in heat.
I keep getting “ATP” questions wrong in Respiration in Plants. What's the trap?
thinking energy is stored long-term as ATP.
I keep getting “Peristalsis” questions wrong in Digestion & Absorption. What's the trap?
thinking gravity moves food through the gut.
I keep getting “Mechanism of breathing” questions wrong in Breathing & Exchange of Gases. What's the trap?
thinking the lungs themselves have muscles that pump air.
What is the difference between RBC and WBC?
Red blood cells carry oxygen (no nucleus in humans); white blood cells defend against infection (have a nucleus).
I keep getting “ADH regulation” questions wrong in Excretory Products & Elimination. What's the trap?
thinking urine concentration is fixed.
What is the difference between sensory neuron and motor neuron?
A sensory neuron carries signals from receptors to the CNS; a motor neuron carries commands from the CNS to muscles/glands.
I keep getting “Pituitary gland” questions wrong in Chemical Coordination (Endocrine System). What's the trap?
thinking each gland works fully independently.
I keep getting “Sex-linked inheritance” questions wrong in Principles of Inheritance & Variation. What's the trap?
thinking sex-linked traits affect both sexes equally.
I keep getting “Translation” questions wrong in Molecular Basis of Inheritance. What's the trap?
thinking each base codes for one amino acid.
What is the difference between natural selection and Lamarckism?
Natural selection acts on inherited variation over generations; Lamarckism (disproved) claimed traits acquired in life are passed on.
I keep getting “Antibiotics” questions wrong in Human Health & Disease. What's the trap?
taking antibiotics for a viral cold or flu.
I keep getting “Placenta” questions wrong in Human Reproduction & Reproductive Health. What's the trap?
thinking maternal and foetal blood mix directly.
I keep getting “Applications” questions wrong in Biotechnology & its Applications. What's the trap?
thinking genetically engineered insulin differs from human insulin.
I keep getting “Food chain vs food web” questions wrong in Ecosystem & Ecology. What's the trap?
assuming each organism eats only one type of food.
I keep getting “Mode of nutrition” questions wrong in Biological Classification. What's the trap?
grouping fungi with plants because both are non-motile.
I keep getting “Stem vs root features” questions wrong in Morphology of Flowering Plants. What's the trap?
calling any underground part a root.
I keep getting “Meristems” questions wrong in Anatomy of Flowering Plants. What's the trap?
thinking growth happens all over the plant equally.
I keep getting “Turgor pressure” questions wrong in Transport in Plants. What's the trap?
thinking wilting means the plant is already dead.
I keep getting “Apical dominance” questions wrong in Plant Growth & Development. What's the trap?
thinking side branches grow best when the tip is intact.
I keep getting “Antagonistic muscles” questions wrong in Locomotion & Movement. What's the trap?
expecting one muscle to both bend and straighten a joint.
I keep getting “Double fertilisation” questions wrong in Sexual Reproduction in Flowering Plants. What's the trap?
thinking only one fusion happens, as in animals.
What does “Biofertilisers” actually mean in Microbes in Human Welfare, and why does it matter for NEET?
living microbes like Rhizobium and cyanobacteria enrich soil naturally by fixing atmospheric nitrogen.