gujarat-education.gov.in : HSC Biology Question Bank Education Department Gujarat
Name of the Board : Education Department Government of Gujarat
Name of the Exam : HSC
Subject : Biology
Document Type : Question Bank
Website : gujarat-education.gov.in
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/6978-QUE%20PAPER-1.pdf
Biology Model Paper :
General Instructions :
(a)All questions are compulsory.
(b)There are 30 questions in total. Questions 1 to 8 carry one mark each,Question
(c)There is no overall choice. However, an internal choice has been provided.
Related : HSC Physics Question Bank Education Department Gujarat : www.pdfquestion.in/6635.html
(d)Use of calculators is not permitted.
(e)You may use the following physical constants wherever necessary.
1 (A) Answer in short. : 4
(1) State the biological importance of molybdenum.
(2) State the site of origin and the chemical nature of estrogen.
(3) What is the chemical nature of an enzyme. State its structural units.
(4) Distinguish Inulin and Insulin.
(B) Write the short notes on: 8
(1) Anaerobic respiration
(2) Regulation of secretion of the hormones of anterior pituitary gland.
(3) Mechanism of enzymatic action
(4) Properties of proteins
(C) Answer precisely: (any two) 8
(1) Explain the types of RNA.
(2) Describe – Monosaccharides.
(3) Describe any two growth promoting plant hormones.
2 (A) Answer as asked for: (4)
(1) State the location and function of velamen tissue.
(2) Give two points of differences between exarch vascular bundle and endarch vascular bundle.
(3) Write the function of epithelial layer in maize seed.
(4) Define: Root pressure.
(B) Describe briefly: 8
(1) Significance of transpiration.
(2) Give scientific explanation: The organs of hydrophytes are light, spongy and soft.
(3) Living Mechanical tissue. (Diagram essential)
(4) Gynaecium of a typical flower.(Diagram essential)
(C) Answer precisely: (Any two) 8
(1) Explain: Dark phase of photosynthesis.
(2) Describe giving diagram, the histological structure of a dicot leaf.
(3) Explain the vegetative adaptations in ginger, carissa, fern and passion flower . (Diagrams essential)
(A) Answer in short: 6
(1) What is synapse?
(2) What is meant by serial homology?
(3) Define:portalvein.
(4) State the names and location of bones possessing olecranon process and deltoid ridge.
(5) State the location and chemical constitution of Nissl’s granules.
(6) State the name of the bones that form the cranium of frog.
(B) Answer brietly as asked for: 6
(1) Describe, giving diagram, the structure of medullated nerve fibre.
(2) Hyoid Apparatus.
(3) Sexual dimorphism in frog.
(C) Answer precisely: (any two)
(1) Reflex action. (Diagram essential).
(2) Course of blood circulation in the heart of frog. (Diagram is not essential).
(3) Describe the physiology of urine formation.
(A) Answer in short: 4
(1) What are degenerate codons ?
(2) Give the contribution of Bateson and punnet in the field of biology.
(3) What do you mean by acrocentric chromosome ?
(4) What is petite mutant yeast?
(B) What is crossing over ? Explain how this phenomnon occurs during cell division. 3
(C) Answer precisely: (any two) 8
(1) Write an explanatory note on: mitochondrial DNA
(2) Explain, with the help of any one chart, the inheritance of colourblindness in man.
(3) Origin of chromosomal abnormalities.
(D) Draw a neat diagram of dorsal and ventral view of frog brain.
OR
Describe the process of gastrulation with necessary diagram.
Q. 5 (A) Answer in short: 6
(1) What is ARC? Explain.
(2) Give full names : NMR, MAB.
(3) Explain : biogeochemical cycle.
(4) What is food-web?
(5) Give any two symptoms of hysteria.
(6) What is metastasis?
(B) Answer as asked for : 8
(1) Describe the article or instruments of genetic engineering .
(2) T- cell immunity.
(3) Describe the principal zones of the global environment.
(4) Give reasons: conservation of wildlife is important for ecological balance.
(C) Write precise notes on : (any two) 6
(1) Symptoms of cancer.
(2) Effects of air pollution on health.
(3) Antigens and antibodies of blood groups.
A. 1 (A) Answer in short :
(1) Molybdenum helps in the fixation of nitrogen in plants which in turn helps in growth. It is an important component of the intestinal enzymes in animal.
(2) Estrogen is the steroid hormone secreted from the ovary.
(3) Enzymes are the proteinaceous substances. Their structural units are the amino acids.
(4) Inulin is a pdysaccharide, whereas insulin is a hormone proteinacious in nature.
(B) Write short notes on :
(1) Anaeorobic respiration :
Oxidation of nutrients taking place without utilizing oxygen is called anaerobic respiraton in medium of plant origin by microbes (ethanol) in medium of animal origin (Lactic acid)
In certain bacteria, yeast and other fungi, endoparasites animal muscle cells, the process of release of energy from glucose occuring without utilizing oxygen, is known as anaerobic respiration.