IGCSE Biology Paper-5: Specimen Questions with Answers 19 - 21 of 62
Question 19
Write in Short Short Answer▾
In given figure there are one banana plant and a Bryophyllum leaf. Write the similarity between both plants related to their method of reproduction process.
EditExplanation
- There is no need of male and female cells in both type of plants
- Asexual reproduction process occur
- Both can reproduce from parts of plant
- Both plants can reproduce by vegetative propagation
- There is no need of pollination or fertilization process
Question 20
Describe in Detail Subjective▾
Figure shows a cross section of a squash stem showing different parts . Label them. What is role of part A and C?
EditExplanation
Part A, is phloem, which transports organic compounds from the site of photosynthesis to other parts of the plant. Part C is Xylem tissue transports water and nutrients from the roots to different parts of the plant.
Question 21
Describe in Detail Subjective▾
Using the data in given draw a line graph to show the effect of pH on the time taken for the digestion of protein on the photographic film. Explain the effect of pH on the activity of the enzymes.
pH | time taken for protein to be digested/mins |
2 | 13 |
6 | 10 |
7 | 1 |
9 | 3 |
12 | 4 |
Explanation
Here is the graph: