BIOLOGY CBSE PAPER 2010 SOLVED

BIOLOGY CBSE PAPER 2010 SOLVED By : BIOLOGY CBSE PAPER 2010 SOLVED By Dr. Subroto Biswas & Dr. Aman Biswas This presentation is brought to you by ….. www.bisbio.in

Hit us atwww.bisbio.in : Hit us atwww.bisbio.in For Online Biology Classes MCAT, PMT, 10+1, 10+2 and others Write to us bisbioin@gmail.com

Slide 3 : Books that you would look for from the authors….Dr Subroto Biswas and Dr A Biswas

Slide 4 : For Details Call Dr Subroto Biswas +91 981 401 6083 (India) 001 778 823 6083 (Canada) Email bisbioin@gmail.com Forthcoming Online Classes Biology PMT Test Series April to May 2010

1. Which of the following structures between two adjacent cells is an effective transport pathway ? : 1. Which of the following structures between two adjacent cells is an effective transport pathway ? Plasmodesmata Plastoquinone Endoplasmic reticulum Plasmalemma

1. Which of the following structures between two adjacent cells is an effective transport pathway ? : 1. Which of the following structures between two adjacent cells is an effective transport pathway ? Plasmodesmata Plastoquinone Endoplasmic reticulum Plasmalemma

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Plasmodesmata : Plasmodesmata under the microscope

2. Single-celled eukaryotes are included in : : 2. Single-celled eukaryotes are included in : Protista Fungi Archaea Monera

2. Single-celled eukaryotes are included in : : 2. Single-celled eukaryotes are included in : Protista Fungi Archaea Monera Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

3. The genetically modified (GM) brinjal in India has been developed for : 3. The genetically modified (GM) brinjal in India has been developed for Insect Resistance Enhancing Shelf Life Enhancing Mineral content Drought-Resistance

3. The genetically modified (GM) brinjal in India has been developed for : 3. The genetically modified (GM) brinjal in India has been developed for Insect Resistance Enhancing Shelf Life Enhancing Mineral content Drought-Resistance

Slide 13 : Indian seed company Mahyco - partner of US multinational corporation Monsanto - which has developed BT brinjal, says…. The GM vegetable is more resistant to natural pests.

Shoot borer : Shoot borer Leucinodes orbonalis

Which other genetically modified crop did India allow in 2002 ? : Which other genetically modified crop did India allow in 2002 ? Cotton

4. In Unilocular ovary with single ovule the placentation is : 4. In Unilocular ovary with single ovule the placentation is Marginal Basal Free Central Axile Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

4. In Unilocular ovary with single ovule the placentation is : 4. In Unilocular ovary with single ovule the placentation is Marginal Basal Free Central Axile

5. An element playing important role in Nitrogen fixation is : 5. An element playing important role in Nitrogen fixation is A. Molybdenum B. Manganese C. Copper D. Zinc Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

5. An element playing important role in Nitrogen fixation is : 5. An element playing important role in Nitrogen fixation is A. Molybdenum B. Manganese C. Copper D. Zinc

6. Sertoli cells are found in : 6. Sertoli cells are found in Ovaries and secrete progesterone Adrenal cortex and secrete Adreneline Seminiferous tubules and provide nutrition to germ cells Pancreas and secrete Cholecystokinin Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

6. Sertoli cells are found in : 6. Sertoli cells are found in Ovaries and secrete progesterone Adrenal cortex and secrete Adreneline Seminiferous tubules and provide nutrition to germ cells Pancreas and secrete Cholecystokinin

Sertoli cells : Sertoli cells

7. Select the statements from the one given below. : 7. Select the statements from the one given below. A. Barbiturates when given to criminals make them tell the truth B. Morphine is often given to persons who have undergone surgery as a pain killer C. Chewing tobacco lowers blood pressure and heart rate D. Cocaine is given to patients after surgery as it stimulates recovery correct

7. Select the correct statements from the one given below. : 7. Select the correct statements from the one given below. A. Barbiturates when given to criminals make them tell the truth B. Morphine is often given to persons who have undergone surgery as a pain killer C. Chewing tobacco lowers blood pressure and heart rate D. Cocaine is given to patients after surgery as it stimulates recovery

Barbiturates : Barbiturates Called sodium pentothal is known as so called 'truth serum'

Opioids (such as morphine and codeine) are the medicines most often used for acute pain, such as short-term pain after surgery. : Opioids (such as morphine and codeine) are the medicines most often used for acute pain, such as short-term pain after surgery.

Tobacco (oral snuff or chewing tobacco) can lead to high blood pressure and heart rate : Tobacco (oral snuff or chewing tobacco) can lead to high blood pressure and heart rate

Cocaine is NOT given to patients after surgery : Cocaine is NOT given to patients after surgery

8. One animal having a single opening to outside that serves both as mouth and anus is : 8. One animal having a single opening to outside that serves both as mouth and anus is A. Octopus B. Asterias C. Ascidia D. Fasciola Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

Octopus : Octopus

Asterias : Asterias

Ascidia : Ascidia

Fasciola : Fasciola

9. Study the four statements below and select the two correct ones : 9. Study the four statements below and select the two correct ones A. A lion eating a deer and a sparrow feeding on grain are ecologically similar on being Consumer B. Predator star fish Pisaster helps in maintaining species diversity of some invertebrates C. Predators ultimately lead to the extinction of prey species D. Production of chemicals such as nicotine and strychnine by the plants are metabolic disorders (b) and (c) 2. (c) and (d) 3. (a) and (d) 4. (a) and (b)

9. Study the four statements below and select the two correct ones : 9. Study the four statements below and select the two correct ones A. A lion eating a deer and a sparrow feeding on grain are ecologically similar on being Consumer B. Predator star fish Pisaster helps in maintaining species diversity of some invertebrates C. Predators ultimately lead to the extinction of prey species D. Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders (b) and (c) 2. (c) and (d) 3. (a) and (d) 4. (a) and (b)

10. Breeding of crops with high levels of minerals, vitamins and proteins is called : 10. Breeding of crops with high levels of minerals, vitamins and proteins is called Somatic hybridization Biofortification Biomaginification Micropropagation Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

Somatic hybridization : Somatic hybridization

Micropropagation : Micropropagation

Biomaginification : Biomaginification

Biofortification : Biofortification Courtesy http://www.biokemi.org/biozoom/issues/525/articles/2397

10. Breeding of crops with high levels of minerals, vitamins and proteins is called : 10. Breeding of crops with high levels of minerals, vitamins and proteins is called Somatic hybridization Biofortification Biomaginification Micropropagation

11. ABO blood groups in humans are controlled by the gene I. It has three alleles IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur? : 11. ABO blood groups in humans are controlled by the gene I. It has three alleles IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur? Three One Four Two

How many phenotypes can occur? : How many phenotypes can occur? Three One Four Two

12. Ovary is half inferior in the flowers of : 12. Ovary is half inferior in the flowers of (a) Guava (b) Plum ( c) Brinjal (d) Cucumber

12. Ovary is half inferior in the flowers of : 12. Ovary is half inferior in the flowers of (a) Guava ----inferior (b) Plum ----perigynous ( c) Brinjal ----superior (d) Cucumber ----inferior

13. Seminal plasma in human males is rich in : 13. Seminal plasma in human males is rich in (a) fructose and calcium (b) glucose and calcium ( c) DNA and testosterone (d) ribose and potassium

13. Seminal plasma in human males is rich in : 13. Seminal plasma in human males is rich in (a) fructose and calcium (b) glucose and calcium ( c) DNA and testosterone (d) ribose and potassium Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

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14. A common biocontrol agent for the control of plant diseases is : 14. A common biocontrol agent for the control of plant diseases is Baculovirus (b) Bacillus thuringiensis (c) Glomus (d)Trichoderma Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr A Biswas

Baculovirus : Baculovirus The majority are used as biological control agents Of genus Nucleopolyhedrovirus, So "baculovirus" or "virus" will hereafter refer to nucleopolyhedroviruses. Viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications.

Bacillus thuringiensis : Bacillus thuringiensis Bt is aGram positive, soil-dwelling bacterium. Commonly used as a pesticide

Glomus : Glomus A genus of arbuscular mycorrhizal (AM) fungi, and all species form symbiotic relationships (mycorrhizas) with plant roots

Trichoderma : Trichoderma http://www.nysaes.cornell.edu/ent/biocontrol/pathogens/images/trichoderma2a.jpg Trichoderma is used as biocontrol agents against fungal diseases of plants. Most biocontrol agents are from the species Trichoderma harzianum, T. viride and T. hamatum. Generally grows on the root surface, and so affects root disease in particular, but can also be effective against foliar diseases

14. A common biocontrol agent for the control of plant diseases is : 14. A common biocontrol agent for the control of plant diseases is (a) Baculovirus (b) Bacillus thuringiensis (c) Glomus (d)Trichoderma

15. Injury to adrenal cortex is not likely to affect the secretion of which one of the following? : 15. Injury to adrenal cortex is not likely to affect the secretion of which one of the following? (a) Aldosterone (b) Both Androstenedione and Dehydroepiandrosterone (c) Adrenaline (d) Cortisol

Slide 56 : http://lotusgyn.com/images/Adrenals_000.gif

15. Injury to adrenal cortex is not likely to affect the secretion of which one of the following? : 15. Injury to adrenal cortex is not likely to affect the secretion of which one of the following? (a) Aldosterone (b) Both Androstenedione and Dehydroepiandrosterone (c) Adrenaline (d) Cortisol

16. Widal test is used for the diagnosis of : 16. Widal test is used for the diagnosis of (a) Malaria (b) Pneumonia ( c) Tuberculosis ( d) Typhoid

16. Widal test is used for the diagnosis of : 16. Widal test is used for the diagnosis of (a) Malaria (b) Pneumonia ( c) Tuberculosis ( d) Typhoid Question from Pradeep’s Objective Biology V-1 and V-2, Edition 2010 ,by Dr S Biswas and Dr Aman Biswas

17. Low Ca++ in the body fluid may be the cause of : 17. Low Ca++ in the body fluid may be the cause of (a) Tetany (b) Anaemia ( c) Angina Pectoris (d) Gout

17. Low Ca++ in the body fluid may be the cause of : 17. Low Ca++ in the body fluid may be the cause of (a) Tetany (b) Anaemia ( c) Angina Pectoris (d) Gout From……………. Signature of Biology V-1 by Dr S Biswas and Dr Aman Biswas

18. Which of the following pairs is incorrectly matched? : 18. Which of the following pairs is incorrectly matched? (a) Glucagon - (b) Somatostatin - ( c) Corpus luteum - (d) Insulin - Beta cells (source) Delta cells (source) Relaxin( source) Diabetes mellitus (disease)

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18. Which of the following pairs is incorrectly matched? : 18. Which of the following pairs is incorrectly matched? (a) Glucagon-Beta cells (source) (b) Somatostatin-Delta cells (source) ( c) Corpus luteum –Relaxin( source) (d) Insulin- Diabetes mellitus (disease)

19. Select the correct statement from the ones given below with respect to dihybrid cross. : 19. Select the correct statement from the ones given below with respect to dihybrid cross. (a) Tightly linked genes on the same chromosome show higher recombinations (b) Genes far apart on the same chromosome show very few recombinations (c) Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones (d)Tightly linked genes on the same chromosome show very few recombinations

19. Select the correct statement from the ones given below with respect to dihybrid cross. : 19. Select the correct statement from the ones given below with respect to dihybrid cross. (a) Tightly linked genes on the same chromosome show higher recombinations (b) Genes far apart on the same chromosome show very few recombinations (c) Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones (d)Tightly linked genes on the same chromosome show very few recombinations

20. The nerve centres which control the body temperature and the urge for eating are contained in : 20. The nerve centres which control the body temperature and the urge for eating are contained in (a) Hypothalamus (b) Pons ( c) Cerebellum (d) Thalamus

20. The nerve centres which control the body temperature and the urge for eating are contained in : 20. The nerve centres which control the body temperature and the urge for eating are contained in (a) Hypothalamus (b) Pons ( c) Cerebellum (d) Thalamus

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