CBSE Guess > Papers > Question Papers > Class XII > 2003 > Biology > Compartment Outside Delhi Set -II

BIOLOGY— 2003 (Set II—Compartment Outside Delhi)

SECTION - A

Q. Nos. 1-8 are of very short answer type currying 1 marks each. Of these the first five questions are of multiple choice type switch have to be answered simply as A, B, C or D. The remaining questions have to be answer in approximately 1—20 words each.

Q. 1. Reciprocal cross is made to determine if
(a) the trait is inherited as dominant
(b) the trait is Inherited as recessive
(c) sex has any role in dominance-recessive relationship
(d) the trait shows codominance
Ans. (d)

Q. 2. Painful swelling of the parotid gland accompanied by high fever and inflammation of the gonads is the symptom of
(a) Tuberculosis
(b) Cholera
(c) Mumps
(d) Tetaants
Ans. (c)

Q. 3. Pick out the false statement with reference to Diabetes insipidus.
(a) Failure of vasopressin secretion produces this disorder
(b) Renal reabsorption of water is reduced
(c) Large volumes of hypotonic urine is excreted
(d) Glucose appears in the urine
Ans. d)

Q. 4. An example of a plant bearing Cyathium type of inflorescence with staminate and pistillat flowers is
(a) Poinsettia
(b) Dianthus
(c) Begonia
(d) Marigold
Ans. (d)

Q. 6. Longer the loop of Henle mere hypertonic is the urine produced.” Is this statement true or false? If false, rewrite it correctly.

SECTION - B

Q. Nos. 9-18 are of short answer type carrying 2 marks each. Answer them in 20-30 words each.

Q. 9. Describe the location and the role of ciliary body in human eye.

SECTION - D

Q. Nos. 28.30 are long answer type carrying 5marks each Q. Nos. 29 and 31 have internal choice Answer these questions in approximately 80-120 words each

Q. 29. (a) Draw the L.S. of human heart showing the internal structure Label all the parts of the right side of the heart including the blood vessels that enter and leave the right chambers.
(b) What is the significance of the remnants of sinus venosus in the mammalian heart?
Or
(a) Draw a portion of the human alimentary canal showing the location of the digestive glands along with their ducts pouring into the duodenum. Label all the parts
(b) Name the largest digestive gland and describe the functions of its secretion in digestion

Q. 30. A geneticist was tracing the inheritance of eye colour in Drosophila flies. He crossed a red eyed male with a white eyed female.
(a) Represent this cross showing the genotypes and phenotypes of the parents and progeny.
(b) What is the normal eye colour in these flies? Give its mutant form.
(c) What is the inference drawn on the inheritance of the eye colour based on the observation of this across’?
Or
Given below as a schematic representation of two interacting bacterial cells:

(a) Name the bacterium and describe the process illustrated
(b) What is the use of such a process in genetics?
(c) Which of the two cells acts as a male?
(d) Draw a labelled diagram of the stage immediately next to the one shown here.