Question 1
State the importance of each of the following in living organisms
- Respiration
- Reproduction
Answer
- Respiration: Process whose organism break down food to produce energy.
- Reproduction: Give rise to young ones of same ensuring continuity of the group.
Question 2
State function of the following in seed. Germination
- Water
- Enzymes
- Oxygen
Answer
- Water/moisture:- soften seed coat. Transport medics
- Enzymes: Breakdown insoluble food substances to soluble
- Oxygen for respiration
Question 3
3. Distinguish between identical twins and fraternal twins
Answer
- Identical twins :- fertilized eggs divides
- Fraternal twins:- Two different eggs (ovum) are fertilized by two different sperms.
Question 4
4. The diagram below represents a stage during cell division.
- Identify the stage of cell division
- Give two reasons for your answer (a) above
- Name the structures labeled K
Answer
- Anaphase I
-
- Chromosomes start migrating to opposites poles
- Sister chromatids attached at the centromere.
- Spindle fibres
Question 5
State three roles of Gibberellins hormone in plant
Answer
- stimulates flowering in plants
- elongation of internodes
- break seed dormancy