(c) sexual reproduction In the case of asexual reproduction, only the minimal changes due to inaccuracies in DNA copying pass on to the... View Article
Venereal diseases which are commonly known as sexually transmitted diseases (STDs) are infectious diseases transmitted through sexual contact. It... View Article
For survival, an individual needs energy which it obtains from life processes such as nutrition and respiration. Reproduction does not provide... View Article
The fusion of the male gamete (sperm) with the female gamete (ova) is known as fertilisation. The process of fertilisation takes place in the... View Article
(a) Contraceptive methods are used such as (i) mechanical (ii) drugs (as pills), (iii) loop or copper T and (iv) surgical method. Contraception... View Article
The ovary produces female gametes. Anthers produces male gametes. The important functions of flowers are mentioned below: Gametophytes develop... View Article
Gamete Zygote Formed after Meiosis Formed by the fusion of two gametes. Gametes produces haploid number of chromosomes produces diploid... View Article
In Budding, fragmentation and regeneration only a single parent is involved and there is no formation of gametes hence they are considered as... View Article
Answer a) Ovary (production of egg) Ovaries are the female reproductive organs in which the female germ cells or eggs are produced. b) Oviduct... View Article
Using mechanical barriers during sexual act like condom helps in avoiding pregnancy as it does not allow the sperm to reach the egg and form... View Article
If fertilization occurs, the loss of corpus luteum is prevented. There is formation of new special tissue called as placenta which connects... View Article
The lining of the uterus slowly breaks and comes out through the vagina as blood and mucus. Every month uterus prepares to receive a fertilized... View Article
Growth is a positive change in the size, often over a period of time which includes physical growth in height, weight, change in shape and size... View Article
Reproduction is directly linked to the stability of the population of species because it helps in replacing the ageing population with the new... View Article
After fertilization, zygote is located in the ovary of the flower. Fertilization can be defined as the fusion of the male gametes (pollen) with... View Article
The chromosome number of the zygote, embryonal cell and adult of a particular organism is always constant. Meiosis is the cell division which... View Article
