IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Evolution-Mitosis
Topic :Evolution– Weightage : 21 %
All Questions for Topic : Life Cycles,Natural Selection,Cell division,Mitosis,Meiosis,Reproduction,Biodiversity,Inheritance and variation,DNA and genetics
Question
In mitosis, two identical cells are produced from a parent cell. Mitosis is needed for many life functions.
a. Select all the functions of mitosis from the following list.
Growth
Sexual reproduction
Respiration
Metabolism
Repair
Asexual reproduction
▶️Answer/Explanation
Ans:
Growth and repair and asexual reproduction
Question
b.We have seen in part (a) that new cells can form through the process of mitosis. Meiosis is another process which forms new cells.Outline the differences in the cells produced in meiosis and mitosis.
While you end up with double the cells in both mitosis and meiosis
▶️Answer/Explanation
Ans:
Each pair of statements is listed in the order meiosis and mitosis
Any two points from the following list only (2 max)
- haploid and diploid or 23 and 46 chromosomes
- 4 cells and 2 cells
- (genetically) non-identical and (genetically) identical
- gametes (sex cells) and somatic cells
Question:
Six onion root tip cells in the micrograph are in metaphase. Which cells are they?
▶️Answer/Explanation
Ans: They are the cells with chromosomes on the equator.