GPB 613 (2+0) Plant Reproductive strategies Question Paper

University of Agricultural Sciences, Raichur.
College of Agriculture, Dept of Genetics and Plant Breeding
Course: GPB 613 (2+0) II exam

Name: ____________________________
(10 mks)

I. Fill in the blanks (0.5 x 20 =10.0)

1. In r & K type of reproductive strategy ‘r’ stands for ____________ and ‘K’ denotes ____________

2. Many Cucurbit sps. Produces male flowers first followed by female or hermaphrodite flowers and the probable reasons for it are
   a. ________________________________________________________________
   b. ________________________________________________________________
   c. ________________________________________________________________

3. The ratio of male to female flowers is called ________________________

4. P/O (pollen to Ovule) ratio is generally low in __________________ crops and more in ____________ crops

5. Positively skewed distribution of seeds per pod in Dalbergia sisso is attributed ___________________ advantage

6. In adverse situation generally plant try to reduce the size of seeds rather than ____________________________

7. High rate of seed abortion with in pods of Dalbergia sisso occurs ____________________ weeks for fertilization.

8. Honey bees & butterflies are generally attracted to ________________ and ________________ colour flowers respectively.

9. Moth pollinated flowers usually __________________________ in colour

10. Ratio of no. of X Chromosomes to the no. of autosomes is called ____________________________

11. In the course of evolution on size and life span of the gametophyte is _______________________ where as it is ______________________ in sporophyte

12. ___________________________ mechanisms promotes self pollination