Organisation : NOU Nalanda Open University
Subject Name : B.Sc. Botany, Chemistry, Zoology
Document Type : Previous Year Question Paper
Year : 2023
Website : https://www.nou.ac.in/downloads.html
NOU B.Sc Botany Previous Year Question Paper
Annual Examination – 2023
B.Sc. Botany (Honours), Part-I
Paper-I
Time: 3.00 Hrs.
Full Marks: 80
Answer any Five questions. All questions carry equal marks.
1. Describe Ultrastructure of Cynophycean Cell. Give well labeled diagram.
2. Describe the structure and reproduction in Oedogonium.
3. Give an account of structure and reproduction in Chara.
4. What do you mean by Autoecious and Heteroecious rust? Describe the life cycle of Puccinia on Wheat. Give suitable diagrams.
5. Describe the life cycle of Alternaria. Name of the disease caused by Alternaria solani.
6. Describe the Sporophyte of Anthoceros. What light it throws in the evolution of Land plants?
7. Describe the Sporophyte of Sphagnum. Give well lablelled diagrams.
8. Throw significant light on the Morophological nature of Sporocarp of Marsilea.
9. What do you mean by Heterospory and Seed habit? Describe Heterospory and Seed habit in Selaginella.
10. Write short notes on any Four of the following :
(a) Elaters
(b) Cup of Peziza
(c) Palmella stage
(d) Gemma cup
(e) Protostele
(f) Globule and Nucule
B.Sc. Botany (Honours), Part-I
Paper-II
Time: 3.00 Hrs. Full
Marks: 80
Answer any Five questions. All questions carry equal marks.
1. Describe the Angiospermic characters of Gnetum.
2. Give an account of development of female gametophyte of Pinus. Give suitable diagrams.
3. What do you mean by Fossil? Mention Fossil flora of Bihar. Describe the life-cycle of any one of them.
4. Give an account of structure of Strobilus of Rhynia.
5. Describe the seed of Lyginopteris. Enumerate its phylogenetic importance.
6. Describe Bentham and Hooker’s system of classification of Angiosperms.
7. Give Floral characters, Floral diagram and Floral formula of any one of the following:
(a) Ranunculaceae (b) Lamiaceae (c) Fabaceae
8. Describe different types of fructifications of Calamites.
9. Describe the development of female gametophyte of Taxus with well labeled diagrams.
10. Write short notes on any Two of the following:
(a) Types of Racemose Inflorescence
(b) Transfusion tissue
(c) Strobilus of cycadeoidea
(d) Botanical name and family of four plants of any family as per your syllabus.
(e) International code of Botanical Nomenclature.
NOU B.Sc Chemistry Previous Question Paper
B.Sc. Chemistry, Part-II
PAPER–III (Honours)
(Physical Chemistry and Inorganic Chemistry)
Annual Examination, 2023
Time : 3 Hours.
Full Marks : 80
Answer any Five questions. All questions carry equal marks.
1. (a) What is reversible cell and irreversible cell ?
(b) What is difference between primary cell and secondary cell ? Give examples.
2. Write notes on any Two of the following :
(a) Carnot cycle and carnot theorem.
(b) Electrode and electrode potential.
(c) Gibb’s Helmholtz equation.
3. (a) What is entropy ? Explain entropy change in ideal gas ?
(b) What is work function ? Explain it with examples and give its units ?
4. Determine the ground state term of d2 system and d7 system. What are the total number of microstates of these terms ?
5. Write the IUPAC name of following compound :-
(a) K4 [Fe(CN)6] (b) [Co(NH3)4 Cl2]+ (c) [Cr(H2O)6 Cl2]+ (d) [Ni (CO)4] (e) [Fe F6]–3 (f) K3[Fe (C2O4)3] (g) [Cr(en)I4]– (h) [Fe(CN)6]–3
6. Write down the formula of the following complex compounds :
(a) Hexa Amine Platinum (IV) Chloride (b) Tetra Carbonyl Nickel
(c) Potassium tetracyano nickalate (III) (d) Triammins dicarbonyl chloro iron (III)ion
(e) Tetra aqua dichloro chromium (III) ion (f) Tetra hydroxo chromate (III) ion
(g) Tetra chloro cuprate (II) ion (h) Ammine sulfato chromium (II)
7. (a) What is Werner’s theory of coordination compound ?
(b) [Nicl4]–2 is paramegnetic while [Ni(Co)4] is diamagnetic though both are tetrahedral why ?
8. Write notes of any Two of the following :
(a) Mass Defect.
(b) Group Displacement Law
(c) Dirty bomb
9. Explain any Two of the following :
(a) Nuclear fission and fusion
(b) Radio carbon-dating
(c) Atom bomb
10. What are transition elements ? Why they are called transition elements ? Explain the chemistry of d-block elements on the basis of
(i) Complex formation.
(ii) Magnetic property.
(iii) Colour of complexes.
B.Sc Zoology Question Paper
B.Sc. Zoology (Honours), Part-I Paper-I
Time: 3.00 Hrs.
Full Marks: 80
Answer any Five questions. Question No. 1 is Compulsory. All questions are of equal value
1. Multiple choice questions. (Each question carries Two marks).
(i) Bipinaria is the larva of which of the following echinoderms?
(a) Star fish (b) Sea Urchin
(c) Brittle Star (d) Sea Cucumber
(ii) Which of the following is called tongue worm?
(a) Loligo (b) Pila (c) Nereis (d) Balanoglossus
(iii) What is the number of total appendages present in palaemon?
(a) 16 Pairs (b) 17 Pairs (c) 18 Pairs (d) 19 Pairs
(iv) In pheretima, the pharyngeal nephridia are present in which of the following segments?
(a) 6, 7, 8 (b) 7, 8, 9 (c) 3, 4, 5 (d) 4, 5, 5
(v) Palaemon belongs to which of the following classes of arthropoda?
(a) Crustacea (b) Insecta (c) Onychophora (d) Arachnida
(vi) Which one the following is the larva of obelia?
(a) Amphiblastula (b) Hydrula (c) Ephyra (d) Planula
(vii) Which of the following is pseudocoelomate animal?
(a) Ascaris (b) Fasciola (c) Obelia (d) Sycon
(viii) Which of the following is the intestinal parasite of man?
(a) Wuchereria (b) Fasciola (c) Ascaris (d) Schistosoma
2. Describe the general features and classification Mollusca upto the order with examples.
3. Describe the life-cycle of protozoan which causes Kala-azar and also discuss its control.
4. Discuss the nervous system of pila globosa and compare it which the Unio.
5. Explain the structure and life-cycle of Taenia solium.
6. Describe the excretory organs of Leech with suitable diagram.
7. Discuss the respiratory system of Unio.
8. Describe the mouth parts of cockroach with their functions.
9. Describe the structure and functions of various zooids found in obelia colony.
10. Write short notes on any Two of the following:
(a) Planula larva (b) Liver fluke
(c) Madreporite (d) Torsion in gastropoda
Download NOU Previous Year Question Paper
B.Sc. (Botany) Part I, II and III https://www.pdfquestion.in/uploads/pdf2024/42227-b.pdf
B.Sc. (Chemistry) Part I, II and III https://www.pdfquestion.in/uploads/pdf2024/42227-c.pdf
B.Sc. (Zoology) Part I, II and III https://www.pdfquestion.in/uploads/pdf2024/42227-z.pdf