Green algae have many similarities to land plants. It has many variety body types and the multicellular forms do not have cells separated into tissues‚ which is what divides green algae from land plants. Green algae are a very diverse group of freshwater algae. Many green algae form long filaments. The cells stay attached after they divide. Spirogyra can become so numerous they form dense mats of growth in surfaces of ponds‚ which is called pond scum. This pond scum is interesting to see through
Premium Gamete Eukaryote Plant
containing half the complement of chromosomes found in somatic cells‚ fuse to produce a single cell called a _______. 2. _______ is a process of nuclear division in which the number of chromosomes in certain cells is halved during gamete formation. 3. ______ cells such as gametes contain one set of chromosomes. 4. Organisms that undertake sexual reproduction alternate between ______ and fertilization. 5. The two homologous chromosomes pair along their length early in the first nuclear division
Premium Meiosis Gamete Chromosome
1 Class X: Biology Chapter 8: How Do Organisms Reproduce? Key Learnings 1) Reproduction is the biological process by which new individuals of the same kind are produced. 2) Reproduction is not essential for the survival of an organism‚ but is vital for the survival of a species. 3) Reproduction produces identical copies of the body design. 4) DNA is the informational macromolecule of our body. It provides information for protein synthesis. 5) During cellular reproduction‚ DNA duplication occurs
Premium Reproductive system Reproduction Gamete
among flowering plants and mammals‚ it is brought by the following requirements. Firstly is the transfer of gametes. Sexual reproduction is only made successful when the gametes of the male and female from a pair of parents of different sexes are transferred to meet each other. In mammals‚ the male gamete is transferred to the female body by copulation to meet with the female gamete in the oviduct for successful fertilization. However‚ the ovum is only present right after ovulation occur‚ and
Premium Gamete Flower Pollination
daughter cells‚ each having a diploid number of chromosomes. 5. Sexually reproducing organisms have a way of reducing the number of chromosomes in the nucleus to half the body cells or 1 n chromosomes.This process is called meiosis and results in gametes‚ sperm and egg‚ that‚ when united‚ form an organism with the diploid number of chromosomes. 6. In meiosis‚ first similar or homologous chromosomes are separated. This is the first separation in meiosis I‚ and results in 2 haploid or 1n cells. Then
Premium Mitosis Meiosis Chromosome
Oogenesis ultimately gives rise to (one ovum‚ four ova) with the (haploid‚ diploid) number of chromosomes. 8. A spermatazoan is a (gamete‚ zygote)‚ and is (haploid‚ diploid). 9. An ovum is a (gamete‚ zygote)‚ and is (haploid‚ diploid). 10. When a spermatozoan and an ovum merge‚ they undergo the process of __fertilization____‚ and give rise to a (gamete‚ zygote)‚ which is (haploid‚ diploid). Questions 11-16. A hypothetical organism has 10 chromosomes for each of its body cells
Free Meiosis Chromosome Gamete
the chromosome theory of inheritance as it was firmly established that a particular trait followed a particular chromosome. An additional proof for chromosomes being the only link between one generation and the other is the fact the gametes‚ at least the male gamete consists of mainly the nucleus and very little amount of cytoplasm. With all these overwhelming evidences in favor of nuclear inheritance it was but natural for geneticists to believe that nucleus is the only seat where all the genetic
Free Cell Eukaryote DNA
consequences of meiotic divisions are very different from those of mitotic divisions. While mitotic division may occur in almost any living cell of an organism‚ meiosis occurs only in special cells. In animals‚ meiosis is restricted to cells that form gametes (eggs and sperm). Each species has a characteristic number of chromosomes per somatic cell. Fruit flies have 8; normal humans have 46. They exist as homologous pairs (partners) that are similar in size and shape and carry the same kinds of genes.
Premium Chromosome Mitosis Meiosis
portion of the parental body by a sexual or asexual process and its subsequent growth and differentiation into a new individual”‚ as stated by the Merriam- Webster English Dictionary. Sexual reproduction is a process whereby the female gamete fuses with the male gamete to form a zygote‚ which potentially develops into genetically different offspring. Essentially this means‚ we combine the genetic information from two individuals of different types or sexes in order to produce a new individual. Asexual
Premium Genetics DNA Reproduction
information in four bases‚ adenine‚ guanine‚ cytosine and thymine. DNA is located in the cell nucleus and is found in all multi- cell organisms. To begin with‚ how did the DNA become and get in our bodies. It all starts with the sperm and the egg‚ gametes. A gamete is a reproductive cell for a male or female.
Premium Chromosome DNA Cell cycle