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JIPMER MBBS Entrance Exam Question Paper

Botany

1. In photosynthesis carbon dioxide is converted to carbohydrates. It is a process.

(a) reductive
(b) oxidative
(c) catabolic and exergonic
(d) None of the above

2. Which of the following is not an auxin?

(a) IM
(b) IBA
(c) Zeatin
(d) NM

3. Which of the following properties is shown by cytokinins?

(a) Delay leaf senescence
(b) Cause leaf abscission
(c) Promote seed dormancy
(d) Promote stornatal closing

4. Which of the following characteristics is are exhibited by C4 -plants?

I. Kranz anatomy.
II. The first product of photosynthesis is oxaloacetic acid.
III. Both PEP carboxylates and ribulosebiphosphate carboxylate act as carboxylating enzymes.

The correct option is

(a) I and III, but not ll
(b) I and II, but not III
(c) II and III, but not I
(d) ll and III

5. Which of the following plant keeps its stomata open during night and closed during the day?

(a) Orchid
(b) Cactus
(c) Tea
(d) Wheat

6. Genetic dwarfism can be overcome by

(a) gibberellin
(b) ethylene
(c) auxin
(d) ABA

7. Hormone inducing fruit ripening is

(a) cytokinin
(b) ethylene
(c) abscissic acid
(d) gibberellic acid

8. The year 1900 AD is highly significant for geneticists due to

(a) discovery of genes
(b) principle of linkage
(c) chromosome theory of heredity
(d) rediscovery of Mendelism

9. F1-generation means

(a) first filial generation
(b) first seed generation
(c) first flowering generation
(d) first fertile generation

10. Skin colour is controlled by

(a) single gene
(b) 3 pairs of genes
(c) 2 pairs of genes
(d) 2 pairs of genes with an intragene

11. Which of the following cross will produce terminal flower in garden pea?

(a) AA x Aa
(b) AA x aa
(c) Aa x Aa
(d) Aa x AA

12. Which one of the following pairs of plants are not seed producers?

(a) Funaria and Ficus
(b) Fern and Funaria
(c) Funada and Pinus
(d) Ficus and Chlamydomonas

13. Which one of the following is heterosporous?

(a) Equisetum
(b) Dryopteris
(c) Salvinia
(d) Adianturn

14. Gyms revoluta is popularly known as

(a) sago palm
(b) royal palm
(c) date palm
(d) sea palm

15. Match the following with correct combination.
Column I Column II
A. Cuscuta 1. Saprophyte
B. Eichhornia 2. Pneumatophare
C. Monotropa 3. Insectivorous plant
D. Rhizophora 4. Parasite
E. Utricularia 5. Root pocket

Codes
A B C D E
(a) 3 1 5 4 2
(b) 2 3 1 5 4
(c) 4 3 1 5 2
(d) 4 5 1 2 3

16. Bacterial endotoxin is

(a) a toxic protein that stays inside the bacterial cell
(b) a toxic protein that is excreted into the medium
(c) lipopolysaccharide located on the surface of the bacteria
(d) None of the above

17. Endosperm of gymnosperms is

(a) haploid
(b) tetraploid
(c) diploid
(d) None of these

18. First vascular plant is

(a) thallophyta
(b) pteridophyta
(c) bryophyta
(d) spermatophyta

19. Diatomaceous earth is obtained from

(a) Bacillarophyceae
(b) Xanthophyceae
(c) Rhodophyceae
(d) Chrysophyceae

20. Which of the following is an epidermal cell containing chloroplast?

(a) Stomata
(b) Hydathode
(c) Guard cell
(d) None of these

21. The structures present in the roots to absorb water and minerals is

(a) epidermal extensions
(b) hypodermis
(c) endodermis
(d) epidermal appendages

22. Lady finger belongs to family

(a) Malvaceae
(b) Cucurbitaceae
(c) Brassicaceae
(d) Liliaceae

23. The interxylary phloem is found in the stem of

(a) Cucurbita
(b) Salvia
(c) Calotropis
(d) None of these

24. Wound healing is due to

(a) ventral meristem
(b) secondary meristem
(c) primary meristem
(d) All of these

25. Angular collenchyma occurs in

(a) Salvia
(b) Helianthus
(c) Althaea
(d) Cucurbita

26. In pteridophytes, phloem is without

(a) bast fibers
(b) sieve tubes
(c) companion cells
(d) sieve cells

27. Match the following entities of column I with their respective orders of column II and choose the correct combination form the option.
Column I Column II
A. Wheat 1. Primate
B. Mango 2. Diptera
C. Housefly 3. Sapindales
D. Man 4. Poales

codes
A B C D
4 3 2 1
1 2 4 3
3 4 2 1
2 4 1 3

28. Agar-agar is produced by

(a) fungi
(b) algae
(c) bacteria
(d) blue-green algae

29. In DNA, when AGCT occurs, their association is as per which of the following pair

(a) A-G, C-T
(b) A-T, G-C
(c) A-C, G-T, A-C, E-T
(d) All of these

30. A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is

(a) 60
(b) 240
(c) 120
(d) 480

31. Lactose is composed of

(a) glucose + glucose
(b) glucose + galactose
(c) glucose + fructose
(d) fructose + galactose

32. Meiosis is best observed in dividing

(a) cell of lateral meristem
(b) cells of apical meristem
(c) microsporocytes
(d) microspores and anther wall

33. Study the following statements and select the correct option.

I. Tapetum nourishes the developing pollen grains.
II. Hilum represents the junction between ovule and funicle.
III. In aquatic plants such as water hyacinth and water lily, pollination is by water.
IV. The primary endosperm nucleus is triploid.

(a) I, II, and IV are correct, but III is incorrect
(b) I and II are correct, but III and IV are incorrect
(c) I and IV are correct, but II and III are incorrect
(d) I, Ill and IV are correct, but I is incorrect

34. Masses of pollen grains, i.e. ,pollinia is found in

(a) Gramineae
(b) Solanaceae
(c) Orchidaceae
(d) Malvaceae

35. Morphine, which is used as an analgesic is obtained from

(a) Taxusbrevifolia
(b) Berberisnilghiriensis
(c) Cinchona officinalis
(d) Pa paver somniferum

36. Pebrine is a disease of

(a) fish
(b) honey bee
(c) silk worm
(d) lac insect

37. Factor govering the earth surface is

(a) topographic
(b) edaphic
(c) temperature
(d) bitic

38. The direction of energy flow is

(a) Producers → Herbivores → Decomposers → Omnivores
(b) Producers → Carnivore → Herbivores → Decomposes
(c) Decomposers → Carnivores → Herbivores → Producers
(d) Producers → Herbivores → Carnivores → Decomposers

39. If the Bengal tiger become extinct

(a) hyenas and wolves will become scarce
(b) its gene pool will be lost forever
(c) the wild areas will be safe far man and domestic
(d) the population of beautiful animals like deers will get stabilised

40. Biological treatment of water pollution is done with the help of

(a) fungi
(b) lichen
(c) phytoplanktons
(d) None of the above