Morphological Characters of Flowers
sidraThe highly specialized shoot which is responsible for the production of fruits and seeds is called flower. Flowers are concerned with the sexual reproduction. Flower has following pans. 1.Sepals: Sepals…
OBJECTIVES OF REPRODUCTION IN CELL
rubabMultiple Choice Questions (MCQs) Phragmoplast is formed from: (a) Ribosome (b) ER (c) Golgi body (d) None Chromosomes start condensing in: (a) Leptotene (b) Zygotene (c) Pachytene (d) Diplotene The…
SUBJECTIVE & SHORT QUESTIONS OF REPRODUCTION IN CELL
SUBJECTIVE QUESTIONS 1- What is mitosis? Describe its different stages. Compare the mitosis in plants and animals. Give significance of mitosis. Describe process of meiosis. Give importance of mitosis. Give…
DEFINITIONS AND KEY POINTS OF REPRODUCTION IN CELL
TERMS DEFINITIONS Phragmoplast Membranous vesicles are collected in the centre. Membrane structure phragtnoplast is formed from vesicles. Meiosis The special type of cell division in which…
Sybmiotic Lifestyles in Protozoans
saadiaSYMBIOTIC LIFESTYLES Many protozoa have symbiotic lifestyles. Symbiosis is an intimate association between two organisms. There are following types of symbiosis in protozoans: 1. Parasitism: An association in which one…
THE CELL CYCLE
The period from the time a cell is produced until it completes mitosis is called cell cycle. Cell division occurs during growth and repair processes. Cell cycle has following basic…
MEIOSIS
The special type of cell division in which the numbers of chromosomes in 'tighter cells are reduced to one half, as compared to the p. rent cells is called meiosis.…
CHROMOSOMES AND GENE LINKAG
abidaEUKARYOTIC CHROMOSOMES The chromosome is composed of DNA and histone protein. DNA is the genetic material. It exists with protein in the fix form. The chromosome shows following phases: Chromatin…
MITOSIS
The type of cell division in which number of chromosomes remains constant in the daughter cells as in the parent cells is called mitosis. Mitosis can take place in haploid…
LIFE WITHIN A SINGLE PLASMA MEMBRANE
LIFE WITHIN A SINGLE PLASMA MEMBRANE Protozoa have unicellular (cytoplasmic) organization. But they are not simple organisms. Often, they are more complex than any particular cell in higher organisms. Some…