Biology Practice: Reproduction in Plants (Mock Test 4 - Expert/Experimental)
1. In a laboratory experiment, a student places pollen grains in a 10% sugar solution. What is the most likely observation after 30 minutes?
2. An investigator removes the stigma of a flower before pollination occurs. Which of the following processes will be directly prevented?
3. In the 'Three-Bean Experiment', why does the middle bean germinate while the top bean does not?
4. Why does the bottom bean in the 'Three-Bean Experiment' usually fail to germinate or rot?
5. In a grafting experiment, if a Scion from a Red Rose plant is grafted onto a Stock of a White Rose plant, the flowers produced on the scion will be:
6. What is the primary purpose of 'Bagging' a flower after emasculation in artificial hybridization experiments?
7. A farmer wants to produce a large number of orchids which are difficult to grow from seeds. Which 'Expert' technique should be used?
8. If a seed is placed in a vacuum-sealed container with water, it fails to germinate. This proves that ________ is essential for germination.
9. In an experiment to demonstrate 'Self-Incompatibility', pollen from Flower A is placed on its own stigma but fails to grow. However, pollen from Flower B grows perfectly. This proves:
10. During 'Tissue Culture', the undifferentiated mass of cells formed from the explant is called:
11. Why is 'Double Fertilization' considered ecologically efficient for plants?
12. A scientist finds a plant where the male and female flowers are on separate individual plants. This condition is known as:
13. In 'Hypogeal' germination, the rapid growth of the ________ keeps the cotyledons inside the soil.
14. What is the logic behind keeping seeds in a refrigerator to prevent germination?
15. In wind-pollinated (Anemophilous) flowers, why are the anthers 'Versatile'?
16. 'Vivipary' is common in plants growing in marshy areas. This is an adaptation because:
17. Which experimental chemical is often used in labs to test for the presence of starch in a germinating seed?
18. If the endosperm of a seed is removed before the embryo matures, the embryo will:
19. In 'Cross-pollination', why are offspring often more 'vigorous' than those from self-pollination?
20. In the pollination of Vallisneria (a water plant), the male flowers reach the surface of the water by:
