define reproduction class 10

Asexual Reproduction is a kind of reproduction where offspring's arise from a single parent. (ii) implantation of the fertilised egg occurs. Answer: After implantation, a disc-like special tissue develops between the uterus wall and the embryo called placenta.

The sperms formed in the testis are delivered through the vas deferens to urethra. Process is Regeneration. The oral pills contain hormones which stop the ovaries from releasing ovum into fallopian tube.

The daughter nuclei; in turn; grow into new individuals. How does their use have a direct effect on the health and prosperity of the family?

→ Sexual maturation: The period of life when production of germ cells i.e. Two simple organisms having the ability of regeneration are Planaria and Hydra.

When spores mature; the sporangium bursts open to release them. (iii) State the importance of part ‘C’. Class 10 Chemistry Chapter 8 Important Questions with Answers How do Organisms Reproduce. Answer: The flowers which contain only one sex organ, either stamen or carpel are called unisexual flowers. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. So a small family is a happy family.

Answer: This has enabled farmers and horticulturists to grow many plants in shorter duration and has helped them to earn more profit. Before every ovulation,inner lining of uterus become thick and soft with lot of blood vessels in it. Question 6. It takes place during normal life conditions. (ii) How does ‘A’ reach part ‘B7

To secrete the male sex hormone called testosterone which is responsible for secondary sexual changes in males. The bud may be unicellular or multicellular formed by mitotic division of its cells. Class 10 Biology How Do Organisms Reproduce: Vegetative Propagation Vegetative Propagation. This process is known as fertilization. (iii) where zygote is implanted – Uterus It helps in providing stability in the ecosystem by producing new individuals, thereby, balancing the one’s that are perished. After implantation, a disc like special tissue develops between the uterus wall and the embryo called placenta. Tuber of Potato: The potato tuber is a modified stem. Many notches can be seen on the surface of potato. The AIDS disease also spreads through the transfusion of blood contaminated with AIDS virus. Class 10 science Types of Reproduction, Advantages of Asexual Reproduction. It produces female hormones called estrogen. It contains ovules and each ovule has an egg cell/female gamete. Answer: Thus, the parent hydra produces a new hydra. Two functions of testes are: Question 4. Thus many daughter cells develop which on liberation grow into adult organisms. How does it occur in an organism? Question 7. The cells then become specialised to form different types of tissues which again form various organs and body parts. The ovule develops a tough coat around it and is gradually converted into a seed (containing the baby plant along with food).

Scientists consider spores are precursors of seeds.

Fertilisation occurs in plants as well as in animals. It is the main feature of life on earth. Answer:

The parent organism splits to form two new organisms. Class 10 Science How Do Organisms Reproduce Mind Map. (2014 OD) Describe its structure. Reproduction is a biological process in which an organism gives rise to young ones similar to themselves. The organism does not have to depend on another organism for carrying out reproduction; because a single parent is needed.

(2011 OD) Three different methods of contraception: Fertilization can be external or internal. Question 15. C – Female gamete (ovum). In asexual reproduction, the offsprings are almost identical to their parent because they have the same genes as their parent, so much genetic variation is not possible in asexual reproduction. (iv) Fallopian tube: This is the site of fertilisation of the egg with sperm (male gamete).

Filed Under: Class 10, How do organism Reproduce Tagged With: menstrual cycle, menstrual flow, mensuration, ovulation About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Answer: Explain how the transmission of such diseases be prevented? (2012 D) Fission (binary & multiple) with examples, Budding, fragmentation, regeneration & spores, Level up on the above skills and collect up to 400 Mastery points, Why sexual reproduction (Faster variation), Germ cells, gametes & sexual reproduction, Flower sexual parts (unisexual & bisexual), Fertilisation, zygote, embryo, germination, Level up on the above skills and collect up to 200 Mastery points, Female reproductive sys, menstruation & fertilisation, Contraceptives (mechanical barriers, hormonal, surgical). Fertilization of gametes leads to zygote formation. On maturing follicle bursts and egg shoot out of ovary.The release of egg from an ovary is called ovulation.It place on 14 day of beginning of menstrual cycle. Meiosis happens during gamete formation; which is an important step of sexual reproduction.

It is a disc like structure embedded in the uterine wall connected to the embryo.

Chemical methods – Oral and vaginal pills used by females. Some examples of vegetative propagation are given below. With the help of suitable diagrams, describe the mode of reproduction in Amoeba. (2011 D)

(ii) Pollen grains, i.e., ‘A’ reach part ‘B’, i.e., stigma of the carpel by the process of pollination. (a) After fertilisation, zygote is formed which develops into an embryo. It is the mode of asexual reproduction in plants. → Prenatal sex determination is a legal offence in our country so as to maintain a balanced sex ratio. → Skin becomes oily, may result in pimples.

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