Questions Portal for Students
Group – A What is anomalous secondary growth? Describe anomalous secondary growth in the Boerhaavia stem with proper labelled sketches. Name the different types of permanent tissues in plant. Describe complex permanent tissues with appropriate sketches. Give botanical names of two species of jute cultivated in West Bengal. Briefly describe the method of jute cultivation. … Read more
Group – A What are Conidia? Write a short note on different types of fruit bodies formed due to aggregation of Conidiophores with suitable examples. Distinguish between thallic and blastic conidia. Name one fungi imperfecti producing disease in humans. What do you mean by sexual compatibility? What are homothallism and heterothallism ? Comment on the … Read more
Group – A What is meant by bacterial growth? Describe different phases of the bacterial growth curve. What is generation time? Describe how it is calculated mathematically. Write the salient features of Blue-green algae. Describe the internal structure of an ideal bluegreen algal cell with a sketch. Mention the points in favor of consideration of … Read more
Group – A With labelled sketches describe secondary growth in the Dracaena stem. Why secondary growth in Dracaena is considered as anomalous? How different leaf gap types are formed? Explain with suitable sketches. What is branch trace?Mention the functions of leaf gap and branch trace. Give botanical name of the plant, the family to which … Read more
Group – A What is coenocytic mycelium? What is chitin? Describe the divisions of fungi according to the modeof nutrition. Give one example of each division and subdivision. How are basidia and basidiospores develop in Basidiomycetous fungi? Describe, with figure, the structure of basidium. What is basidiocarp? What is the disease cycle? What are monocyclic … Read more
Group – A What is simple tissue? Classify simple tissue. Describe any two types with a diagram. What isProsenchyma? Describe schematically different types of stomata for example. Name one plant organ that lacks stomata. Write the scientific name, family, and chromosome number of jute. Write three differences between C.capsulasis and C.olitorius. What is retting? What … Read more
Group – A What are mycelia and hypha? Discuss different phases of sexual reproduction in fungi. What are primary and secondary mycelia? In which class of fungi do they occur? What is the Buller phenomenon? Write down the process of sexual reproduction in Basidiomycetes. Discuss the structural characteristics of plants that offer resistance to plant … Read more
Group – A Compare Bacillariophyta with Cyanophyta with respect to general characteristics of their cell structure. Describe the life cycle of Ectocarpus with labelled sketches only. Give a word diagram of the life cycle of Polysiphonia. Describe the mechanism of formation of its Carposporophyte. Distinguish between lytic and lysogenic cycles ? Describe briefly the different … Read more
Group – A Describe the structure of an ideal plant virus with diagram. What do you understand by Viroid and Prion ? What is Cytopathic effect ? Describe the chemical structure of Gram-positive and gram-negative bacterial cell wall. State the functions of capsule layer of bacteria. Mention how temperature and oxygen affects bacterial growth. What … Read more
Group-A 1) Derive the equation for determination of radius of nth orbit of the electron in He+ ion from Bohr theory. Derive the equation for energy of the electron in the nth orbit of the ion also.2) Mention two successes of Bohr’s theory.3) In an hydrogen atom, calculate the frequency of the ray emitted when … Read more