Name : Subject : Biology -II Total Marks: 50
Course : CHAPTER 18 (T4) Date : 22/01/2020 Ob. Marks:
Q.1: Tick right option:(1x10=10) A B C D
Photoperiod affects flowering when shoot meristems start producing: Lateral buds Floral buds leaves branches
Low temperature treatment given to plants stimulates the production of vernalin which is actually the auxin gibberelin cytokinins ethene
An example of egg-laying mammal is: kangaroo Duckbill platypus rat squirrel
The duration of gestation period in human female is usually? 270 days 330 days 380 days 290 days
The ovary under the stimulus of FSH also produces a hormone i.e progesterone estrogen oxytocin corticosteroids
In plants elongation of cells is favoured by which light infrared red blue ultraviolet
Plant hormone florigen is produced in: root stem leaves flowers
All of the following are short day plants except Soya bean tobacco tomato strawberry
One of the following is not a method of asexual reproduction sporulation gametogenesis apomixes parthenogenesis
Which one is diploid in nature? megaspore Male prothallus Microspore mother cell Female prothallus
Q.No.2. Out of following short questions, (12×2=24)
What are the advantages of photoperiodism and vernalistion?
Explain the disease gonorrhea.
How oestrous cycle is different from menstrual cycle?
What are phytochromes?
What is the difference between oogenesis and spermatogenesis in human?
What is climacteric & also give its role?
What is ovoviviparous condition?
What is haploid parthenogenesis?
What is apomixes?
What is luteal phase?
Attempt these questions (8×2=16)
Q# 3: (a) Explain the role of phytochromes in photoperiodism. (4)
(b) Explain female reproductive cycle. (4)
Q# 4: (a) Define cloning. Write its significance and drawbacks. (4)
(b) Give comprehensive comparison between sexual and asexual reproduction. (4)
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