Types of reproduction and sexual reproduction
Answers are for parents and teachers.
1
Write four methods of asexual reproduction in unicellular organisms with examples.
Binary fission: amoeba; schizogony: Plasmodium; budding: yeast; reproduction by spores.
2
One bacterium divides every 20 minutes. How many bacteria after 1 hour 40 minutes (5 divisions)?
32
3
How many spermatozoa form from 25 primary spermatocytes?
100
4
Compare spermatozoon and egg cell on 3 features.
Spermatozoon: small, motile, no yolk. Egg cell: large, immobile, has yolk; both are haploid.
5
Why do offspring differ from the parents in sexual reproduction?
The combination of chromosomes and crossing over in meiosis and random union of gametes give a new set of genes.