CBSE Sample Paper of Biology Class 12

Sample Paper for CBSE PMT/PET/AIEEE
Biology Class 12

REPRODUCTION IN ORGANISM

Max Marks – 35
Time – 1 hour

• Q.01 to Q.10 (1 marks)
• Q.11 to Q.13 (2 marks)
• Q.14 to Q.16 (3 marks)
• Q.17 to Q.18 (5 marks)

Q .1Both tap worm & earthworm are hermaphrodites. How do they differ from each other with reference to fertilization?

Q.2 Pick out the monoceious plant from the following:
A) Coccinia
B) Mulberry
C) cucumber
D) Date palm.

Q.3 Give An example of dioceious plants.

Q.4 Why are cucurbits refers to as monoceious?

Q.5 Why are date palm refers to as dioceious?

Q.6 Name the plants in which isogamy occurs?

Q.7 Why is reproduction essential for an organism.

Q.8 What is meiocytes?

Q.9 What is meant by homothelic.

Q.10 What is meant by juvenile phase of an organism?

Q.11 What is the mode of asexual reproduction in I) Yeast II) Amoeba III) Hydra IV) Sponges.

OR

Name the method of vegetative reproduction in the following:-
i) Roses
ii) Sugarcane
iii) Bougainvillea
iv) Money plant
v) Straw berry

Q.12 Give the chromosomes no. in the gametes of the following, if the no. of chromosome in their meiocyte is as follows:
I) Dog – 78
II) House fly – 12
III) Rice – 24
IV) Onion-32.

Q.13 What do the following parts of the flower develop into after fertilization.
I) Ovary
II) Zygote
III) Ovary wall
IV) Ovules.

Q.14 Identify each part in the flowering plant & write whether it is n OR 2n.
I) Ovary
II) Anther
III) Egg
IV) Pollen
V) Male gamete
VI) Zygote.

Q.15 Draw the diagram of gemmule of a sponge & labeled 4 parts.

Q.16 Differentiate b/w external fertilization & internal fertilization with an example.

Q.17 What are vegetative propagules? Name any 4 of them along with example.

Q.18 Name the three phases in sexual reproduction of an organism & Mention what major events occur in each of them.

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