B.Sc. Botany (Honours), Part-III
Paper-V (Physiology and Biochemistry)
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. Questions No. 1 is compulsory. All questions carry equal marks.
1. Multiple choice questions:
The process of transpiration helps in
Absorption of CO2 from atmospheere Upward conduction of water
Opening of stomata Absorption
If a cell is placed in hypertonic solution, what will happen
Endosmosis Exosmosis Deplasmolysis No change
The flow of water from one cell to another is governed by
Osmotic pressure Diffusion
Diffusion pressure deficit Osmosis
Translocation of minerals occur through
Cortex Phloem Xylem Pericycle
Plants requiring two metabolic compounds (minerals) for chlorophyll synthesis, are
Fe and Ca Fe and Mg CU and Ca Ca and K
Photorespiration occurs in
Cytoplasm Mitochondria Chloroplast
Chloroplast, Peroxisomes and Mitochondria.
In hills reaction
CO2 is produced ADP formed NADP H2 ATP and NADP
H2
(viii) One of the following is not a product of calvin cycle of Photosynthesis
Ribose phosphate Di hydroxy acetone
Xylulose phosphate Oxaloacetic acid
2. Describe C3 cycle of CO2 fixatron in Photosynthesis.
3. Give details of Kreb's cycle.
4. Describe different types of movement in plant. Describe any one in detail.
5. Mention the role by trace elements in Physiology of plants.
6. Give an account of Photoperiodism in plants.
7. Describe the process of translocation of solutes in plants.
8. What is vernalization Mention with reference to plants.
9. Write short notes on any two of the following.
Non-cyclic photophosphorylation Diffusion pressure dejicit
Nitrogen cycle Cytokinins in plant physiology.
10. Describe the role of potassium, Zinc and Calcium in plants.