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Breasts
These are a pair of rounded structures present on ventral thoracic wall with a nipple in its middle. The breast has about 20 lobes of mammary glands which are modified sweat glands. These lobes secrete milk to nourish the new born baby. Each lobe is separated from the others by dense connective and..
These are a pair of rounded structures present on ventral thoracic wall with a nipple in its middle. The breast has about 20 lobes of mammary glands which are modified sweat glands. These lobes secrete milk to nourish the new born baby. Each lobe is separated from the others by dense connective and..Structure of Gametes - Spermatozoan
Structure of Gametes - Spermatozoan - A sperm is a haploid male gamete which fuses with the ovum to form the diploid zygot..
Structure of Gametes - Spermatozoan - A sperm is a haploid male gamete which fuses with the ovum to form the diploid zygot..Diakinesis
: Separation of the chromosomes is now complete with paternal and maternal chromosomes having exchanged portions of chromatids. The chromosomes condense again. The chiasmata disappear by sliding towards the tips of the chromatids. This process is called terminalisation. By the time these change..
: Separation of the chromosomes is now complete with paternal and maternal chromosomes having exchanged portions of chromatids. The chromosomes condense again. The chiasmata disappear by sliding towards the tips of the chromatids. This process is called terminalisation. By the time these change..Mitosis
Mitosis - It is a common type of cell division that occurs in all the cells of an organism. Hence, it is commonly called as somatic cell division. In mitosis, the resulting daughter cells will have the same number of chromosomes and contain the same amount of DNA, as that of the parent cell. Hence,..
Mitosis - It is a common type of cell division that occurs in all the cells of an organism. Hence, it is commonly called as somatic cell division. In mitosis, the resulting daughter cells will have the same number of chromosomes and contain the same amount of DNA, as that of the parent cell. Hence,..Growth of the Pollen Tube
The pollen grains which reach the sticky stigma, absorb these secretions, swells up and ruptures at one of the germ pores. The thin intine emerges out in the form of a pollen tube which continues to grow and penetrates deep into the styl..
The pollen grains which reach the sticky stigma, absorb these secretions, swells up and ruptures at one of the germ pores. The thin intine emerges out in the form of a pollen tube which continues to grow and penetrates deep into the styl..Spermatogenesis
The process of spermatogenesis occurs in the seminiferous tubules of the testes. The whole developmental process of proliferation of spermatogonia or the sperm mother cells to mature spermatozoa or sperm is called as spermatogenesis. The functional spermatozoa or sperms have haploid number of chrom..
The process of spermatogenesis occurs in the seminiferous tubules of the testes. The whole developmental process of proliferation of spermatogonia or the sperm mother cells to mature spermatozoa or sperm is called as spermatogenesis. The functional spermatozoa or sperms have haploid number of chrom..Mound Layering
In this process, the lower stem branch of a plant is defoliated partially. It is then, bent close to the ground, pegged and covered with moist soil in such a way that its growing tip remains above the soil surface. After a few days, the covered portion on the stem branch develops the adventitious r..
In this process, the lower stem branch of a plant is defoliated partially. It is then, bent close to the ground, pegged and covered with moist soil in such a way that its growing tip remains above the soil surface. After a few days, the covered portion on the stem branch develops the adventitious r..Fertilisation
On reaching the stigma, the pollen grains put out a tube. This is called germination of the pollen grain. The tip of the tube contains the male nuclei. The tube grows and enters the ovule where it bursts at the tip releasing the male gametes. One of the male gametes fuses with the egg, the fem..
On reaching the stigma, the pollen grains put out a tube. This is called germination of the pollen grain. The tip of the tube contains the male nuclei. The tube grows and enters the ovule where it bursts at the tip releasing the male gametes. One of the male gametes fuses with the egg, the fem..Fertilisation
Fertilisation - Fertilisation can be defined as the fusion of the sperm nucleus with the egg nucleus to form a diploid cell known as zygote. The fertilisation is internal in the human reproductive system. It is achieved by the insertion of the male organ, penis into the vagina of the fema..
Fertilisation - Fertilisation can be defined as the fusion of the sperm nucleus with the egg nucleus to form a diploid cell known as zygote. The fertilisation is internal in the human reproductive system. It is achieved by the insertion of the male organ, penis into the vagina of the fema..Sporozoans
These are protozoans which occur as endoparasites in different groups of animals. They lack locomotor structures. The body has a tough covering called cuticle and a single nucleus. Asexual reproduction occurs by multiple fission. Sexual reproduction involves anisogamy. Life cycl..
These are protozoans which occur as endoparasites in different groups of animals. They lack locomotor structures. The body has a tough covering called cuticle and a single nucleus. Asexual reproduction occurs by multiple fission. Sexual reproduction involves anisogamy. Life cycl..See what our Users say :
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