During fertilization in flowering plants‚ one sperm cell fuses with an egg cell to form a zygote and a second sperm fuses with two polar nuclei to form _____________. Correct B ) endosperm he process by which one of the two sperm nuclei fuses with the egg nucleus to produce a diploid zygote and the other fuses with the polar nuclei to produce a triploid endosperm the transfer of pollen grains from an anther to the stigma of the same flower or to the stigma of another flower on the same plant
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the naturalist‚ that he could fly because of his being an eagle‚ and so he flew superbly high in the sky. Sometimes‚ people are like that of the eagle in the parable. Scientifically‚ we are born champion because out of the million sperms cells from our father‚ only one sperm cell was able to meet the egg cell of our mother and fertilization occurred. After nine months each of us was born…a champion was born. Biblically speaking‚ we were made in the image of God. We have that capacity‚ capability and
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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
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Table of Contents Topic: | Page number: | Authors note and Introduction | 1 | Fertilization | 2 | Conception | 3 | What not to do when pregnant | 4 | Preparation before baby | 5 | Pregnancy stages | 6 | Going into labor and giving birth | 7 | How to deal with a newborn | 8 | Expenses towards newborn babies | 9 | Parenting styles | 10 | Types of families | 11 | What’s next | 12 | Authors note and Introduction Everybody asks about babies‚ and there is so many things
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Reproduction in humans Reproduction Reproduction is a characteristic of all living organisms. It is the process that makes more of the same kind of organism. Reproduction is essential in all species to ensure that the species does not extinct. There are two types of reproduction‚ Asexual and sexual reproduction. Asexual Reproduction: Asexual means not sexual. This means that this kind of reproduction does not involve sex. Asexual reproduction is the production of genetically identical offspring from
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Discuss the differences between‚ and the advantages and disadvantages of sexual and asexual reproduction : SEXUAL REPRODUCTION Sexual Reproduction is the formation of a new organism from two parents usually‚ and involves the joining of gametes [ e.g. sperm‚ pollen‚ egg] to form a single cell called a zygote [ or fertilised egg ]. The offspring are similar‚ but not identical to the parents. Sexually Reproductive organisms include mammals‚ most reptiles‚ and flowering plants. ADVANTAGES There is greater
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bulbourethral glands and the ejaculatory ducts. B) The body absorbs the sperm C) Prior to ovulation‚ the female body begins to prepare for the introduction of sperm by maintaining a lower body temperature and producing an alkaline cervical mucus. In this sperm friendly environment‚ sperm may live between 3 and 5 days; however‚ when this fertile mucus is not present or basal body temperature has risen after ovulation‚ sperm may only live between 24 and 48 hours. D) In the ovaries E) It can cause
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involves the fusion of two gametes‚ sperm (male gamete) and egg (female gamete). In human these gametes are produced in different sexes‚ the male and female. Reproduction in humans is performed by reproductive systems‚ the male and female reproductive systems. The main organs of male reproductive system are testis and gonads and of female reproductive system are vagina‚ ovaries‚ and uterus. Main events in sexual reproduction of humans are production of sperms and egg‚ copulation‚ and fertilization
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2003. “Economic Losses from Heat Stress by US Livestock Industries.” J. Dairy Sci. 86: (E. Suppl.): E52–E77. Stone‚ B. A. 1982. “Heat induced infertility of boars: the inter-relationship between depressed sperm output and fertility and an estimation of the critical temperature above which sperm output is impaired.” Animal Reproduction Sci. 4: 283-299. Thompkins‚ E. C.‚ C. J. Heidenreich‚ and M. Stob. 1967. “Effect of post-breeding thermal stress on embryonic mortality in swine.” J. Animal Sci. 26:
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contributions of many parts. The sperm itself is manufactured in the seminifurous tubules before they head to the epidiymus to be stored and to mature. When a male is ready to ejaculate‚ the sperm continues onto the vas deferens through involuntary contraction to end up in the urethral bulb. This is where all the other secretions that make up semen collect. The prostate gland secretes 30% of the seminal fluid by volume‚ a milky substance that activates the sperm and balance the pH of the acidic vagina
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