Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Identify the correct description about the given figure (an elongated spike-like inflorescence with prominently exposed stamens):
Exposed, light, plumose stamens are characteristic of wind-pollinated (anemophilous) inflorescences.
Identify the step in tricarboxylic acid cycle, which does not involve oxidation of substrate.
Succinyl-CoA → succinate is a substrate-level phosphorylation (GTP/ATP formed); no redox change at the carbon backbone.
Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?
Gibberellins cause stem elongation; spraying sugarcane with GA increases internode length and thus the yield.
Match List I with List II.
| List I | List II |
|---|---|
| A. GLUT-4 | I. Hormone |
| B. Insulin | II. Enzyme |
| C. Trypsin | III. Intercellular ground substance |
| D. Collagen | IV. Enables glucose transport into cells |
Choose the correct answer from the options given below:
GLUT-4 — glucose transporter; Insulin — hormone; Trypsin — enzyme; Collagen — intercellular matrix protein.
Which of the following are fused in somatic hybridization involving two varieties of plants?
Somatic hybridization fuses naked plant cells (protoplasts) after enzymatic removal of cell walls.
The flippers of the Penguins and Dolphins are the example of:
Different ancestors converging on the same flipper morphology to suit aquatic locomotion → convergent evolution (analogous organs).
Match List I with List II:
| List I | List II |
|---|---|
| A. Pleurobrachia | I. Mollusca |
| B. Radula | II. Ctenophora |
| C. Stomochord | III. Osteichthyes |
| D. Air bladder | IV. Hemichordata |
Choose the correct answer from the options given below:
Pleurobrachia — Ctenophora; Radula — Mollusca; Stomochord — Hemichordata; Air bladder — Osteichthyes.
Which of the following is not a component of Fallopian tube?
Uterine fundus is part of the uterus, not the Fallopian tube. The tube has infundibulum → ampulla → isthmus.
Following are the stages of pathway for conduction of an action potential through the heart:
A. AV bundle B. Purkinje fibres C. AV node D. Bundle branches E. SA node
Choose the correct sequence of pathway from the options given below:
Standard cardiac conduction pathway: SA node → AV node → AV bundle (bundle of His) → bundle branches → Purkinje fibres.
Given below are two statements:
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below:
The hymen may rupture due to a variety of activities (sport, riding, tampon use) — not only coitus, so Statement II is incorrect.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.