Important Questions for Class 8 Chapter 9 - Reproduction in Animals

Important questions based on NCERT syllabus for Chapter 9 - Reproduction in Animals:

Question-1: Write a note on female reproductive organs in human being.

Solution: 1. The female reproductive system consists of external genital organ and internal genital organ.
2. Internal genital organ consist of a pair of ovaries, oviducts (fallopian tubes), uterus and vagina. Ovary produces female gametes called ova (eggs). Fertilization takes place in oviduct. In human beings, a single matured egg is released into the oviduct by one of the ovaries every month. Uterus is the part where development of the baby takes place. Vagina receives the male copulatory organ, the penis.
3. External genital organ of female is called as vulva. It consists of mon pubis, labia majora, labia minora, clitoris and vaginal orifice.

Question-2: Define the following with example: (a) Budding (b) Binary fission

Solution: (a) Budding: - Budding is a form of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site. e.g. New individuals develop from the buds in hydra; this type of asexual reproduction is called budding.

(b) Binary fission: - Prokaryotic fission, which is binary fission, is a form of asexual reproduction and cell division used by all prokaryotes (bacteria and archaebacteria) and some organelles within eukaryotic organisms (e.g., mitochondria).

Question-3: Explain in-vitro fertilization?

Solution: 1. In vitro fertilization (IVF) is a process by which an egg is fertilized by sperm outside the body: in vitro. IVF is a major treatment for infertility when other methods of assisted reproductive technology have failed.
2.The process involves monitoring and stimulating a woman's ovulatory process, removing ovum or ova (egg or eggs) from the woman's ovaries and letting sperm fertilize them in a fluid medium in a laboratory.