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NEET UG practice questions

Physics, Chemistry and Biology practice with answers and explanations. 1,164 questions in the bank.

1. 1In which group of plants is the sporophyte completely dependent on the gametophyte for its nutrition?Biology· Biology Core Curriculum· Moderate
2. 2The nodal tissue responsible for initiating the heartbeat in humans is known as theBiology· Biology Core Curriculum· Moderate
3. 3Which one of the following is an example of a symbiotic nitrogen-fixing cyanobacterium found in the coralloid roots of Cycas?Biology· Biology Core Curriculum· Moderate
4. 4In cockroaches, which structure is responsible for the excretion of nitrogenous wastes?Biology· Biology Core Curriculum· Moderate
5. 5In which of the following plants is the endosperm completely consumed by the developing embryo before seed maturation?Biology· Biology Core Curriculum· Moderate
6. 6The Malpighian tubules in insects are primarily responsible forBiology· Biology Core Curriculum· Moderate
7. 7In honey bees, the queen substance is primarily responsible forBiology· Biology Core Curriculum· Moderate
8. 8Which of the following is a distinguishing feature of dicot stems when viewed in transverse section?Biology· Biology Core Curriculum· Moderate
9. 9The hormone responsible for the stimulation of milk ejection (let-down) in mammals isBiology· Biology Core Curriculum· Moderate
10. 10The hormone responsible for the molting process in arthropods isBiology· Biology Core Curriculum· Moderate
11. 11Which type of phyllotaxy is found in the leaves of Nerium?Biology· Biology Core Curriculum· Moderate
12. 12Which of the following animals is a viviparous mammal?Biology· Biology Core Curriculum· Moderate
13. 13In which animal is the circulatory system of the open type?Biology· Biology Core Curriculum· Moderate
14. 14Which of the following is a non-motile, colonial, freshwater green alga?Biology· Biology Core Curriculum· Moderate
15. 15In cockroach, the organ responsible for excretion of nitrogenous wastes is:Biology· Biology Core Curriculum· Moderate
16. 16Which of the following plant tissues is responsible for the formation of primary xylem and primary phloem?Biology· Biology Core Curriculum· Moderate
17. 17In mammals, which of the following structures is directly involved in the production of testosterone?Biology· Biology Core Curriculum· Moderate
18. 18Which of the following is a character exclusive to members of the phylum Echinodermata?Biology· Biology Core Curriculum· Moderate
19. 19In the process of double fertilization in angiosperms, one male gamete fuses with the egg while the other fuses with:Biology· Biology Core Curriculum· Moderate
20. 20Which of the following is the principal photosynthetic pigment in cyanobacteria?Biology· Biology Core Curriculum· Moderate
21. 21In cockroaches, the respiratory system consists of which of the following structures?Biology· Biology Core Curriculum· Moderate
22. 22In which part of the nephron does maximum reabsorption of glomerular filtrate occur?Biology· Biology Core Curriculum· Moderate
23. 23Which of the following is a characteristic feature of collenchyma cells in plants?Biology· Biology Core Curriculum· Moderate
24. 24Which one of the following tissues is responsible for the secondary growth in dicot stems?Biology· Biology Core Curriculum· Moderate