Botany (GE-1)' Dec 2019 | Dibrugarh University Question Paper | B.SC 1st Sem | CBCS Pattern

 2019

(December)

BOTANY

(Generic Effective)

Paper: GE-1

(Biodiversity [Microbe, Algae, Fungi and Archegoniate])

Full Marks: 53

Pass Marks: 21

Time: 3 hours

The figures in the margin indicate full marks for the questions

1. (a) Choose the correct answer of the following:                                            1x3=3

1)         Bacteria do not contain ribosome/true nucleus/cytoplasm.

2)         Fucoxanthin is the characteristic pigment of Rhodophyceae/Phaeophyceae/Chlorophyceae.

3)         In fungi, absorbing organ is hyphae/spore/haustorium.

(b) Fill in the blanks:                                                    1x2=2

1)         The vallecular canal is found in _________ stem.

2)         Pollination in gymnosperms takes place by means of _________.

(c) Write in brief on the following (any three):                                            3x3=9

1)         General characteristics of bacteria.

2)         Economic importance of algae in agriculture.

3)         VAM.

4)         Types of lichen.

2. Describe the sexual reproduction of Chlamydomonas with diagram.                   2+5=7

3. Describe with diagram the sporophyte of Marchantia.                                               2+5=7

4. Describe the life history of Penicillium.                                                                              9

Or

Write in brief on the following:

a)         Crozier formation in Ascomycetous fungi.                                  5

b)         Uredospore and teleutospore of Puccinia.                                                 4

5. Write explanatory notes of either [ (a) and (b)] or [(c) and (d)] of the following:            4x2=8

a)         Rhizophore of Selaginella.

b)         Megasporophyll of Cycas.

c)          Male cone of Pinus.

d)         Strobilus of Equisetum.

6. Write short notes on (any two):                           4x2=8

a)         Characteristic feature of viruses.

b)         Structure of bacteriophage.

c)          Industrial importance of bacteria.

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