4. Answer the following questions in short.
a. Explain with examples types of
asexual reproduction in unicellular
organism.
b. Explain the concept of IVF.
c. Which precautions will you follow
to maintain the reproductive health?
d. What is menstrual cycle? Describe it
in brief.
Answers
Explanation:
Asexual reproduction Sexual reproduction
1. Reproduction that occurs with the help of somatic cells is called as asexual reproduction. 1. Reproduction that occurs with the help of germ cells is called sexual reproduction.
2. Both the parents are not required for asexual reproduction. It is uniparental
reproduction. 2. Male and female parent are necessary for sexual reproduction.
3. This reproduction occurs with the help of mitosis only. 3. This reproduction occurs with the help of both meiosis and mitosis.
4. New individual formed by this method is genetically identical to parents. 4. New individual formed by this method is genetically different from parents.
5. Asexual reproduction occurs in different individuals by various methods like binary fission, multiple fission, budding, fragmentation, regeneration, vegetative propagation, spore production, etc. 5. Sexual reproduction occurs in various organisms like microbes, plants, animals and humans. It involves two main processes- gamete formation and fertilization.