(Bifurcated Syllabus)
[English Version]
Directions
For Regular Candidates, the questions of Group 'A', 'B' and 'C' will have to be answered.
For External Candidates, the questions of Group 'D' will also have to be answered in addition to Group 'A', 'B' and 'C'
Instructions regarding the number of questions to be attempted have been indicated at the beginning of each group.
Special Instruction for Sightless Candidates
In Group 'C' instead of question Nos. 12 and 13, any one of the question Nos. 12(A) and 13(A) will have to be answered.
Group 'A'
[Candidates will have to answer question Nos. 1,2,3 and 4]
1. Complete the sentences choosing the correct answer (any five): 1 x 5 = 5
(i) The region of human brain that regulates "body balance" is _______
(a) Cerebrum
(b) Cerebellum
(c) Thalamus
(d) Hypothalamus
(ii) An artificial hormone is ________
(a) Indole acetic acid
(b) Napthalene acetic acid
(c) Gibberellic acid
(d) Ziatin
(iii) The phase in which "nucleolus" reappears during mitosis cell-division is ________
(a) Prophase
(b) Metaphase
(c) Anaphase
(d) Telophase
(iv) The animal which is formed by the process of "Parthenogenesis" is ________
(a) Queen honeybee
(b) Worker honeybee
(c) Male honeybee or Drone
(d) All types of honeybees
(v) The animal in which only deoxygenated blood is transported through heart is ________
(a) Toad
(b) Fish
(c) Snake
(d) Crocodile
(vi) Stomata are present on the upper surface of ________
(a) Mango leaf
(b) Sundri leaf
(c) Cactus leaf
(d) Lotus leaf
(vii) A viral disease transmitted through blood is ________
(a) influenza
(b) polio
(c) hepatitis
(d) cholera
2. Answer in one sentence (any ten): 1 x 10 = 10
(i) Which type of excretory product is found in Phanimanasa plant (Opuntia Sp.) ?
(ii) In which part of nephron reabsorption of essential matters takes place ?
(iii) Name the protective covering which is present encircling Central Nervous System (CNS) of vertebrates.
(iv) What is the process by which "seedless fruits" can be produced without fertilization by applying plant hormones ?
(v) Name the hormone which controls the secondary sexual characters of women.
(vi) By which eukaryotic chromosomes remain attached with the "spindle-fibres" ?
(vii) What is the type of reproduction by which baby-plants grow at leaf-margin of Bryophyllum Sp. ?
(viii) What is the number of autosomes present in human sperm ?
(ix) Which organ has become vestigial as appendix in human ?
(x) What did Darwin term the condition developed due to prodigality of reproduction alongwith constancy of food and space ?
(xi) What sorts of changes are found in xerophytic plants to reduce rate of transpiration in respect of position of stomata ?
(xii) Which fungus is responsible for rust disease of wheat ?
(xiii) Write the name of a bacteria-destroying virus.
3. Attempt any six questions : 2 x 6 = 12
(i) Mention two roles of liver in excretion.
(ii) What is yellow spot, mention its function.
(iii) What is the name of the hormone regulating tropic movements in plants ? From which part it is secreted ?
(iv) Write one structural and one functional differences between DNA and RNA.
(v) How many types of gametes may be produced after meiosis from a round yellow (RRYy-genotype) seeded pea-plant ?
(vi) How does structural changes of amphibian and mammalian heart support the evolution ?
(vii) What is the necessity of developing breathing roots in Sundri plant ?
(viii) What types of micro-organisms are Lactobacillus and Penicillium ? How are we benefited from them ?
4. Attempt any ten questions : 3 x 10 = 30
(i) Write three excretory processes in plants.
(ii) What is the name of the fluid present in the central canal of spinal cord ? Write ,two functions of spinal cord.
(iii) Mention two structural and one functional differences between dendron and axon.
(iv) What is the source of adrenalin hormone ? Why it is called as emergency hormone ?
(v) Describe three important functions of gibberellins.
(vi) Why mitosis is called 'equational division' and meiosis as 'reductional division' ? Where does the meiosis cell division occur ?
(vii) Write three differences between prokaryotic and eukaryotic cells.
(viii) Mention three important reasons for selecting pea plant (Pisum sativum) for his hybridization experiments by Mendel.
(ix) Mention three differences between asexual and sexual reproduction.
(x) Explain briefly the role of 'survival of fittest' and 'Natural selection' in the origin of new species of living organism.
(xi) Mention the role of (i) wing (ii).flight muscle and (iii) air-sacs in volant adaptation in pigeon.
(xii) Name the protozoon causing dysentery. How is the disease transmitted ?
(xiii) What is the main aim of vaccination ? Name two diseases carried by each of housefly and mosquito.
Group 'B'
(Answer any five questions from Question No. 5 to Question No. 11)
5. Mention the role of skin, lungs and kidney in excretion in animals. Name the hormone that is responsible for the absorption of water in renal tubule. Write the name of the part that connects proximal and distal convoluted tubule of nephron. 3+1+1=5
6. What is the difference between ganglion and nerve fibre ? Write two functions of lacrimal gland. Mention the function of skin as a sense organ. 1+2+2=5
7. Name two hormones that are responsible for apical dominance and division of cytoplasm in plant cells respectively. Write full name of two hormones produced in anterior pituitary and one function of each. ? Describe briefly the process "cytokinesis in animal cell". Name the cytoplasmic organelle that helps in the formation of "cell plate" in dividing plant cell. 1+3+1=5
9. Black hair is dominant and white hair is recessive character of guineapig. Explain the result of a cross between two hybrid black guineapigs with the help of a checker board. What types of gamets unite to form a female child in man ? 3+2=5
10. What do you mean by "fossil" ? Describe the importance of fossils as proof of evolution of horse. 1+4=5
11. What is adaptation ? Describe one adaptive feature each of root, stem and thalamus of Lotus plant. 2+3=5
Group C
(Answer any one question)
12. Draw a diagram of a typical neurone, and label the following parts in the diagram :
nucleus, end brush, axon, dendron, myelin sheath and node of Ranvier. 5+3=8
13. Draw a neat diagram of Rohufish and label the following parts :
Mouth, gills, caudalfln, analfin, pectoralfin, lateral line. 5+3=8
(For Sightless Candidates Only)
(Answer any one question)
(Diagram not required)
12(A). Write in brief the structure of a typical neurone. What are the functions of axon and dendron in a neurone ? 6+2=8
13(A). Discuss the role of following organs in the adaptation of Rohufish-body shape, gill, myotome muscle and caudalfm. 2+2+2+2=8
Group 'D'
(Only for External Candidates)
(Answer any one question)
14. What is excretion ? Write the basic differences between plant and animal excretion. Describe briefly the structure of nephron. What is latex ? 2+3+4+1=10
15. Write the name of two diseases and their causal organisms, transmitted through blood in man. Mention two common disinfectants and their uses. Write the scientific name of the fungus responsible for fermentation and its importance. (2+2)+(l+2)+(l+2)=10
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