function of four structures for reproduction found in angiosperms

Angiosperms - Angiosperms represent the most advanced group of vascular plants. They are commonly called 'Flowering plants'. They exceed all other major groups of living plants in number and diversity. Angiosperms grow in almost every kind of habitat. They occur in ver..

. In racemose type, there is an axis which keeps growing. It does not end in a flower. Flowers are found in acropetal succession. Cymose inflorescence has an axis which does not grow infinitely. It ends usually in a flower. Flowers are produced in basipetal succession. The racemose and cymose inflo..

. On the chromosomes are present the genes that give the chromosomes a beaded appearance. The chromosomes are present in pairs. If one chromosome is taken from each pair it forms a haploid set. The full complement of chromosomes is called a diploid set. All the genes together have all the informati..

. On the chromosomes are present the genes that give the chromosomes a beaded appearance. The chromosomes are present in pairs. If one chromosome is taken from each pair it forms a haploid set. The full complement of chromosomes is called a diploid set. All the genes together have all the informati..

. However, it is also seen in lower organisms like the bacteria, Spirogyra (an alga) and Paramoecium (a protozoan). Bacteria show a primitive type of sexual reproduction called genetic recombination. Sexual reproduction involves the fusion of male gamete with the female gamete i..

The human heart is a muscular, cone-shaped, hollow organ about the size of a fist (about 12cm in length and 9cm in breadth). The heart is situated behind the sternum, between the lungs in the thoracic cavity. The heart is tilted slightly such that its apex is towards the left side. The major p..

> hybrid carbon of an aromatic ring. The bond angle This is due to partial double bond character on account of the conjugation of unshared electron pair of oxygen with the aromatic ri..

Reproductive health refers to health issues connected with reproduction. The health of mother during pregnancy (also called pre - natal) and after child birth (also called antenatal) and health of child are included in reproductive health. The growth of human embryo in..

The nephron or uriniferous tubule is the functional unit of the kidney. A nephron consists of a twisted tubule closed at one end, open at the other with a network of associated blood vessels. Each kidney of man is formed of about one million nephrons. Each nephron has a length of about 3 ..

. Hence, such secondary constrictions are called as nucleolar organizers. fig. 19.3 Structure of Chromosomes The terminal end of a chromosome is called as telomere. It is functionally different from the rest of the chromosome. A chromatid may breakup into pieces and the pieces m..