Description
ASSIGNMENT
Course Code: BBYCT-131
Assignment Code: BBYCT-131/TMA/2026
Maximum Marks: 100
Note: Attempt all questions. The marks for each question are indicated against it.
1.a) “Bacteria have a major impact on human life by their beneficial activities”. Elaborate with examples.
b) Discuss the lysogenic cycle with a neat diagram.
2.a) Write a short note on Siphonogamous and Zoidogamous plants.
b) Describe mycorrhiza. How does it help the host?
3.Write a detailed account on occurrence, morphology and ultrastructure in Cyanophyta.
4.a) Explain the mechanisms of pollination and fertilization in gymnosperms.
b) Define heterospory. Explain its biological significance.
5.a) Describe in brief structure and anatomy of crustose or foliose lichens
b) Why bryophytes are considered as pioneers of vegetation? How do they help in preventing soil erosion and recycling of nutrients?
6.a) Enumerate the characteristics of Lycophyta.
b) How do pollination and fertilisation occur in Pinus? Explain
7.a) Describe economic importance of Pteriodophytes or Gymnosperms.
b) Compare the male reproductive structure of Cycas and Pinus.
8.a) With the help of diagrams, describe the sexual reproduction in Polysiphonia.
b) Justify gymnosperm seed have remarkable combination of two generations.
9.a) Describe the mechanisms of genetics recombination in bacteria with suitable diagrams.
b) With the help of suitable diagram, explain the sexual reproduction in Funaria. W
10.write notes on the following:
i) Fungal antibiotics and drugs
ii)HIV virus.
iii) Clamp connection formation in Basidiomycetes
iv) T.S. of coralloid root of Cycas.
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