Medical Entrance Exams NEET practice set-4
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1. A crop plant that grows well in nitrogen deficient soils without the addition of manner is
(a) Cajanus cajan (b) Allium cepa
(c) Cucurbita pepo (d) Capsicum annum
2. In which of the following sexual reproduction is without water?
(a) Ulothrix (b) Funaria
(c) Pteris (d) Cycas
3. The phenotypic ratio in the F2 generation, after selfing AABbCC of F1 generation, will be
(a) 1: 1 (b) 9 : 3 : 3: 1
(c) 3 : 1 (d) 27 : 9 : 9 : 9 : 3 : 3 : 1
4. A plant that is all root and root performs the function of assimilation and reproduction is
(a) Podostemon (b) Pothos
(c) Potamogeton (d) Pistia
5. Complementary cells are associated with
(a) lenticels (b) hydathode
(c) rhytidome (d) bark
6. An alcohol dipped cell kept in hypertonic sucrose solution will
(a) burst (b) plasmolyse
(c) remain unchanged (d) become turgid
7. A close relation between flower and the pollinating agent is best exhibited by
(a) Cocos (b) Portulaca
(c) Brassica (d) Yucca
8. Phytohormone involved in phototropism is
(a) IAA (b) GA3
(c) CK (d) ABA
9. As it travels along the food-chain, the concentration of DDT
(a) increases (b) decreases
(c) remains constant (d) fluctuates
10. The first hormone produced artificially by culturing bacteria is
(a) Insulin (b) Thyroxine
(c) Testosterone (d) Adrenaline
11. Interferons are useful in controlling
(a) T.B. (b) Cancer
(c) Malaria (d) Blood pressure
12. Genes are chemically
(a) lipoproteins (b) glycoproteins
(c) histones (d) polynucleotides
13. The most important foods are derived from
(a) roots (b) fruits
(c) terms (d) leaves
14. Axillary bud and terminal bud are formed from the activity of
(a) lateral meristem
(b) apical meristem
(c) intercalary meristem
(d) parenchyma
15. In sweet pea, genes C and P are necessary for colour in flowers. The flowers are while in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross Ccpp x ccPp?
(a) 100% (b) 25%
(c) 50% (d) 75%
16. Proteolytic enzyme secreting glands are present in which plant?
(a) Citrus (b) Eucalyptus
(c) Drosera (d) Urtica
17. How many nuclei are involved in double fertilization?
(a) 2 (b) 3
(c) 4 (d) 5
18. Air pollution effects are usually found on
(a) leaves (b) flowers
(c) stems (d) roots
19. Marine algae flourished well during which of the following period?
(a) Ordovician (b) Devonian
(c) Permian (d) Triassic
20. Which of the following is a suitable vector to clone long fragments of DNA?
(a) Bacteriophage DNA (b) PBR322
(c) YACs (d) Cosmids
21. Meristematic cells contain more of
(a) fats (b) protein
(c) sugar (d) none of these
22. At incipient plasmolysis, water potential () is equal to
(a) (b)
(c) (d)
23. Ategmic ovule is found in
(a) Viscum (b) Santalum
(c) Loranthus (d) all of these
24. Richmond – Lang effect is shown by
(a) IAA (b) GA
(c) CK (d) ABA
25. How much of the chemical energy within producer tissue becomes chemical energy in herbivore tissue?
(a) 10% (b) 30%
(c) 90% (d) 1%
Assertion and Reason Types Questions
Choose any one of the following four responses :
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but the reason is not the correct explanation of the assertion.
(c) If an assertion is true but the reason is false.
(d) If assertion and Reason Both are false.
26. A: Intraspecific competition is more severe.
R: Organisms of same species have same basic requirements.
27. A: All growth regulators are natural.
R: All growth regulators are growth promoters.
28. A: Bitegmic ovules are more common in angiosperms.
B: Bitegmic ovules are found in Gamopetalae of dicots.
29. A: Guttation occurs due to root pressure.
R: Maximum guttation occurs in Colocasia
30. A: Red algae can survive in deep sea water.
R: The reserve food in red algae is floridean starch.
(31- 35) Match the Following
31. Column I Column II
A. Gamete i. Colourless individual
B. Homozygous ii. Haploid cell
C. Heterozygous iii. Individuals having identical factors
D. Albino iv. Individuals having different factors.
A B C D
(a) ii iii iv i
(b) i ii iv iii
(c) ii iii i iv
(d) i iii iv ii
32. Column I Column II
A. Pinus i. Amber
B. Cycas ii. Resin
C. Ephedra iii. Sago
D. Abies iv. Canada balsam
A B C D
(a) iii iii-iv
(b) ii iii i iv
(c) i iii-iv ii
(d) iv iii iii
33. Column I Column II
A. Corymb i. Musa
B. Spadix ii. Helianthus
C. Capitulum iii. Iberis amara
D. Cyathium iv. Euphorbia
A B C D
(a) iii iii-iv
(b) ii iii-iv i
(c) iii iii-iv
(d) iv iii iii
34. Column I Column II
A. Collateral and i. Zea root
open
B. Radial ii. Cucurbita stem
C. By collateral iii. Pteris
D. Concentric iv. Helianthus stem
A B C D
(a) iv i iii ii
(b) iv iii iii
(c) iv i ii-iii
(d) i iv iii ii
35. Column I Column II
A. Halophytes i. Saline soil
B. Psammophytes ii. Sandy soil
C. Chasmophytes iii. Rock services
D. Oxylophytes iv. Acidic soil
A B C D
(a) iii iii-iv
(b) iii iii-iv
(c) iv ii iii i
(d) i iii ii iv
Fill in the Blanks
36. Biosynthesis of ethylene occurs from ……………….
37. Monosporangiate anther is found in ……………………
38. The plants have a characteristic leaf anatomy called…………………………. anatomy.
39. One turn of Z-DNA has ………………….dinucleotide units.
40. Rhizopus is a …………………….. fungus.
(41-45) True false type
41. Biomass is the amount of living material or organic matter present in the organism.
42. Sulphur dioxide above 1 PPM affects human beings.
43. Phagemid is a complex structure made of bacteriophage only.
44. Azotobacter is a leguminous plant which has a symbiotic relationship with two organisms in root and stems.
45. Sudden inheritable change in character is called mutation.
Short Answer type
46. Pneumatophores are covered by cork. How do these roots help in gaseous exchange?
47. What is conjunctive tissue?
48. What is nitrification?
49. What is genomics?
50. Define a sere?