40 questions for botany at entrance examination

1. Branch which deals with the study of shrubs and trees is known as  
a. Dendrology
b. Evolution
c. Anthology  
d. Botany
 
2. Who proposed that theory that 'cells arise only from the pre-existing cells'?
a. Mohl
b. Virchow
c. Hackel
d. Brown

 

3. The two helices of the double helical DNA
a. Coil around each other
b. Coil around common axis 
c. Coil at right angel  to each other
d. Coil around separate axes

 

4. Monosaccharide consists of
a.  3-5 carbon atoms
b. 2-5 carbon atoms
c. 3-7 carbon atoms
d. 2-7 carbon atoms

 

5. The process in which the amount of DNA, RNA and protein can be known at a time is called
a. Cellular fractioning
b. Phase contrast microscopy
c. Autoradiography
d. Tissue

 

6. Non protein part of an enzyme is called
a. Holonzyme
b. Prosthetic group
c. Apoenzyme
d. None

 

7. The main function of of Golgicomplex
a. Translocation
b. Centriole
c. Glycosidation
d. Phosphorylation

 

8. During photo- respiration H2O2 formed in perioxisome is broke down by
a.Oxidase
b. Catalase 
c. Peroxidase
d. All of above

 

9. If, leaf cell is carefully fractioned, which of the following  fraction could be called alive?
a. ER
b. Cell wall
c. Ribosome
d. Mitochondrion

 

10. Raphides are found in
a. Citrus
b. Colocasia
c. Neriam
d. Mango            

                                                                                                                                                         
11. In monohybrid cross the genotypic ratio is
a.2:2
b.3:1
c.1:2:1
d. 1:2

 

12. In crossing over , exchange takes places between
a.Homologous
b.Chromatin of same chromosomes
c. Chromatids of homologous  chromossome
d.All of above are true

 

13. basic structural unit of Eukaryotic chromosome is
a. The chronema
b. The  chronematic fiber
c. DNA
d. The nucleosome

 

14. Genes are packaged into a bacterial chromosome by
a.Actin
b. Acidic protein
c.Histones
d. Basic proteins

 

15. Interzoual fibers occurs in
a. Prophase
b. Early metaphase
c.Late phase
d.  Anaphase

 

16. For the formation of 160 pllens, how many meiotic divisions are required?
a.20
b.30
c.40
d.80

 

17. During the meiotic division the centromeres divide
a.Diplotene
b.Metaphase-1
c.Pachylene
d.Anaphase-1

 

18. Khorana got the Nobel prize in
a.Gene synthesis
b.Genetic code
c. Protein synthesis
d. Enzyme synthesis

 

19. Repressor in the product of
a.Operator gene
b.Promoter gene
c.structural gene
d.Regulator gene

 

20. Scrapie disease of cattle is caused by
a.Bacteria
b.Vision
c.Prion
d.Mycoplasma

 

21. Interferon's are useful in controlling
a.T.B
b.B.P
c.Malaria
d.Cancer

 

22. In bacteria, sex is determined by
a.Presence of pilli
b.Presence of flagella
c. Presence of merosomes
d. Presence of episome

 

23. Formation of Vinegar from alcohol  is caused by
a.Clostridium
b.llius subtilts
c.Azotobacter
d.Acetobacter aceti

 

24. The common bread mold is
a.Rhizopus
b.Mucor
c.Penicillium
d.Aspergillus

 

25. In mucon sp. Usually isogamies takes places between
a.Same strains
b. +&- strains
c.zygology
d.Microspores

 

26. The alga which is used as a food in spaces flight is
a.Ulothrix
b.Spirogyra
c.Nostoc
d.Chlorella

 

27. Agar is obtained from
a.Gelidium
b.Batracospermum
c.Chlorella
d.None

 

28. The peristome is funaria consists of at maturity
a.One series of curved narrow triangular teeth,16 in number
b.One series of curved narrow triangular teeth, 32 in number
c.Two series of triangular teeth, 8 teeth in each series
d.Two series of curved, narrow triangular teeth in each series

 

29. When moss spore germinate, they form
a. leafy gametophyte
b. Capsule
c. Protenema
d. Rhizoids

 

30. In ferns, sporangia are borne on the
a. margin of leaf
b. Abaxial surface of leaf
c. Adaxial surface of leaf
d. Only at the tip of leaf

 

31. Pinus
a. Bears flowers
b. Exhibits no vascular bundle
c. Produces seeds on the cones
d. Doesn't produce seeds on cone

 

32. Woods of Cycas  consists of
a. Vessles only
b. Vessels and Tracheids
c. Tracheids
d. None

 

33. Corm is
a. a horizontal underground fused stem
b. an underground vertical stem
c. an underground root
d. an underground stem

 

34. Dicot leaf showing parallel venation is
a. Smilex
b. Ranunculus
c. Calophyllum
d. Dioscorea

 

35. Bast fibre is frequently found in
a. Secondary xylem
b. Secondary phloem
c. Primary xylem
d. Primary phloem

 

36. What are the characteristics of a monocot bundle?
a. Open and surrounding by a sclerenchymatous bundle sheath
b. Closed and not sourrounded by bundle sheath
c. Closed and surrounded by bundle sheath
d. Open and not surrounded by bundle sheath

 

37. Which of the following meristems is responsible for extrastelar secondary growth in dicot exylem?
a. Phellem
b. Phelloderm
c. Phellogem
d. Intercalary meristem

 

38. Naked male flower with single stamen are found in
a. Head
b. verticellaster
c. Cyanthium
d. Hypanthodium

 

39. A polygonium type of embryo is
a. 7 celled and 8 nucleated
b. 8 celled and 7 nucleated
c. 7 celled and 7 nucleated
d. 8 celled and 8 nucleated

 

40.  A berry is a friut which is
a. Fibrous and single seeded
b. Fleshy and single seeded
c. Fleshy and multi-seeded
d. Dry and multi seeded

 

40 questions for botany at entrance examination provided to you by ekendra at ekendra's blog