CLASS XII BIOLOGY
MAX. MARKS: 30 TIME: 1 HR
NAME____________ CLASS_____SECTION__________ ROLL NO.
This paper comprises of two Parts- I and II. Answer all Questions.
Ensure that you focus on key words/phrases so as to complete in the
stipulated time.
PART I (14 Marks)
Q.1 (a) State the best known contributions of the following: [2X1]
i) Strasburger ii) Camerarius
b) Give reasons for the following: [2x1]
i) Genetic Counselling is recommended in couples above age 35.
ii) Family Planning technique is only partially successful in our country.
(b)Give a diagrammatic representation of a typical ovule with embryo sac. [5]
Give a diagrammatic representation of a mature human spermatozoan. [5]
PART II (16 Marks)
SECTION A (2x3=6 Marks)
Q.2 (a)Discuss the development stages of dicot embryo.
OR
(b)List the contrivances for cross pollination in flowering plants.
Q.3 What are the main hormones associated with menstrual cycle and their functions?
SECTION B [2x5=10 marks]
Q.4(a) Write a note on Test Tube babies.
OR
(b)Explain STDs, also giving illustrations.