31. According to Hutchinson's system, which of the following begins with the most primitive order magnoliales and ends in verbenales?
32. In Anthoceros, the gametophyte bears cavities which are often occupied by which of the following algae?
33. Aerating organs in the form of organised breaks also occur in the lower cortex of
34. Quinine which is a major drug for malaria is obtained from
35. Which of the following is the product of fermentation of sugars and starches by Clostridium acetobutilicum?
36. The phellogen in the lenticel region is characterised by
37. Who among the following for the first time ascertained the existence of sex and role of pollen grains in plants and mentioned them in De Sexu Plantarum Epistola?
38. The double reduction in the number of chromosomes in the ascus is termed as
39. The outer tangential wall of the epidermal cells is usually coated with waxy substance called
40. In a group of RNA tumour viruses, called leukoviruses or rousviruses, the genetic material is
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