Questions Portal for Students
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 Give an account of the variations in vegetative structure in algae with suitable diagrams and examples. Describe the processes of reproduction of Vaucheria. State the systemic position of this alga with supporting reasons. What is a bacterial endospore? Describe its structure with a diagram. Discuss the stages of the formation of the … 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