How do Organisms Reproduce?
CBSE Class 10 Science · every board question from this chapter, 2022–2026
- Choose the correct statements with reference to chromosomes: (i) carry hereditary information from parents to next generation.…2026
- Yeast multiplies by which of the following methods?2026
- Identify the type of reproduction shown in the diagram given below:2026
- If the part 'P' of the flower is removed, which of the following processes will not take place?2026
- Spirogyra, despite being a multi-cellular organism, still shows a simple reproductive method. Select the correct option with…2026
- Identify the correct statement for spirogyra, leishmania and hydra:2026
- A farmer wants to grow banana plants genetically similar to the plants already available in the fields. Which of the following…2026
- In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?2026
- From the given situations, identify 'Chemotropic' and 'Geotropic' movements in parts of plants, respectively: (i) Growth of…2026
- When a human egg is fertilized by a sperm having 'Y' chromosome, the zygote has the following combination of chromosomes:2026
- Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst…2026
- Which of the following represents the correct sequence of events of sexual reproduction in a flower?2026
- The number of chromosomes in parents and offspring of a particular species undergoing sexual reproduction remains constant due to:2026
- The sexually transmitted disease caused by bacteria is:2026
- Assertion: Variations are not often seen in off-springs produced by asexual reproduction. Reason (R): DNA molecule generated by…2026
- Assertion: Reproduction, like any other life process, is essential to maintain the life of an individual organism. Reason (R):…2026
- Assertion: Bacteria produced as a result of asexual reproduction would be similar. Reason (R): There would be only minor…2026
- "Variation is useful for the survival of species over time." Explain this statement with the help of an example.2026
- A squirrel in a scary situation requires its body to prepare for either 'fight or flight' to save itself. State the immediate…2026
- Draw a neat diagram to show germination of pollen on the female reproductive part of the flower. Name and label only the…2026
- Attempt either or: Observe the given diagram and answer the questions that follow: (i) Give the name of the structure and type of…2026
- Given below are certain situations. Analyse each and describe its possible impact: (i) A population of bacteria living in…2026
- Attempt either or: (i) Name an organ that helps in the formation of male germ cells in humans and also mention the condition that…2026
- (i) In an angiospermic flower, fertilization is said to take place when male gametes carried in the pollen tube fuse with the…2026
- Match Column-I with Column-II and select the correct option from the choices provided.2025
- Plants like rose and banana have lost the capacity to produce:2025
- Which one of the following has half the number of chromosomes and half the amount of DNA as compared to the non-reproductive body…2025
- In a bisexual flower the male gametes are present in the:2025
- Select a pair of bisexual flowers from the following:2025
- Which one of the following statements is not correct for the plants raised by vegetative propagation?2025
- Bryophyllum produces new plant through:2025
- Which of the following is the correct sequence of parts of female reproductive system of flowering plants in terms of their…2025
- Select the option having correct matching of the organism given in Column I with the mode of reproduction in Column II:2025
- When a seed germinates the root grows downwards and a small shoot grows upward. This shoot is known as2025
- The correct/true statement(s) for a bisexual flower is/are: (i) They possess both stamen and pistil. (ii) They possess either…2025
- The modes of reproduction in Spirogyra and Planaria respectively are2025
- The number of chromosomes in a cell division is halved. This kind of cell division is observed in:2025
- Assertion: The embryo gets nutrition from the mother's blood with the help of a special tissue called placenta. Reason (R):…2025
- Draw labelled diagrams to show different stages of budding in Hydra.2025
- Give reasons: The male reproductive organ responsible for formation of germ cells is located outside the abdominal cavity. The…2025
- Write one function each of the following, in a seed: (i) Seed coat (ii) Cotyledon (iii) Radicle (iv) Plumule OR Write the main…2025
- Differentiate between self-pollination and cross pollination. Which one of the two is better for the survival of species? Give…2025
- Define fertilisation. What happens to Zygote, Ovule, Ovary and Stamens after fertilisation in a flowering plant?2025
- Differentiate between a gamete and a zygote. State their significance in sexual reproduction.2025
- (i) What is regeneration? Give one example of an organism that shows this process and one organism that does not. Why does…2025
- (i) Write the functions of the following parts of human female reproductive system: (I) Ovary (II) Fallopian tube (III) Uterus…2025
- (i) Identify the parts 'X' and 'Y' in the figure given below: (ii) Name the yellowish coloured structures produced by the part…2025
- Define Puberty. List any two changes seen in boys at the time of puberty. Why are testes in human males located outside the…2025
- Name the parts marked as 'A' and 'B' in the given diagram. Write in detail the changes that take place in a flower when the…2025
- Name the method by which Amoeba and Leishmania reproduce. Write a major difference in the way they divide to produce new…2025
- When a girl is born, the ovaries already contain thousands of immature eggs. On reaching puberty, some of these start maturing.…2025
- The plants that can be raised by the method of vegetative propagation are:2024
- The part of the flower which attracts insects for pollination is/are:2024
- The part of seed which is a source of food during germination of seed is:2024
- Part(s) of a flower which attracts insects for pollination is (are)2024
- The incorrect statement about placenta is:2024
- A zygote is formed by the fusion of a male gamete and a female gamete. The number of chromosomes in the zygote of a human is:2024
- Select from the following the conditions responsible for the rapid spread of bread mould on a slice of bread: (i) Formation of…2024
- Offsprings formed as a result of sexual reproduction produce more variations because2024
- Identify the mode of asexual reproduction in the following organism:2024
- Which one of the following organ is NOT a part of human female reproductive system?2024
- In which of the following organisms, multiple fission is a means of asexual reproduction?2024
- Assertion: Offsprings produced by asexual reproduction are genetically similar to the parents. Reason (R): Asexual reproduction…2024
- Assertion: Offsprings produced by asexual reproduction are genetically similar to the parents. Reason (R): Asexual reproduction…2024
- "Stability of DNA in a species is ensured during sexual reproduction." Justify the statement.2024
- Name two types of germ cells present in human beings. List two structural differences between the two.2024
- Some unicellular organisms such as Plasmodium and Leishmania differ in the manner in which they reproduce. Name and explain the…2024
- Identify the organ in the human female reproductive system where the sperm encounters the egg cell. What will happen if it is…2024
- The survival of a species is promoted through creation of variations. Illustrate with an example.2024
- In angiosperms why fertilisation cannot take place in flowers if pollination does not take place? Where is zygote located in a…2024
- List any two contraceptive methods practised only by women. Mention how these methods work. Write the two roles performed by…2024
- Explain with the help of a labelled diagram, the process of reproduction in Hydra by budding. Name the cells used for…2024
- Explain the events that take place once a sperm reaches the oviduct till it becomes a foetus. Write the role of placenta in…2024
- (i) Name three techniques/devices used by human females to avoid pregnancy. Mention the side effects caused by each. (ii) What…2024
- (i) What are spores? On which structures are they formed? How do they overcome unfavourable conditions? Name the organism which…2024
- What is puberty? Write any two changes that occur in boys during early teenage years. List two functions performed by testis in…2024
- Asexual reproduction involves a single parent to produce offsprings without the formation of gametes. It occurs by the following…2024
- Pollination is an important process in sexual reproduction of plants. It is an essential process that facilitates fertilisation…2024
- Asexual reproduction involves a single parent to produce offsprings without the formation of gametes. It occurs by the following…2024
- During adolescence, reproductive phase starts and:2023
- Plants which bear unisexual flowers are:2023
- Choose the correct order of the stages of binary fission in Leishmania.2023
- The thread like structures that develop on a moist slice of bread in Rhizopus are2023
- Select the INCORRECT match (between the plant and its vegetative part) from the following:2023
- When an 'X' bearing sperm fertilises the egg, the resulting zygote has the following combination of chromosomes:2023
- The number of chromosomes in parents and offsprings of a particular species undergoing sexual reproduction remain constant due to:2023
- Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit?2023
- Assertion: When a bacterium divides into two, and the resultant two bacteria divide again, the four bacteria produced would be…2023
- Assertion: Testes in human males are located outside the abdominal cavity in scrotum. Reason (R): Scrotum provides a lower…2023
- Mention the role of the following organs of human male reproductive system: (i) Testis (ii) Scrotum (iii) Vas-deferens (iv)…2023
- (i) Where are testes located in the human males and why? State two function of the testes. (ii) In the human female, one of the…2023
- Name the two types of pollination and differentiate between them. Explain the post fertilization changes that occur in the ovary…2023
- Give reason for the following: During reproduction inheritance of different proteins will lead to altered body designs.…2023
- (i) Name and explain the two modes of asexual reproduction observed in hydra. (ii) What is vegetative propagation? List two…2023
- What happens when the egg is not fertilised? How is sperm genetically different from a human egg / ova? List any three…2023
- Name the parts of a bisexual flower that are not directly involved in reproduction. Differentiate between self pollination and…2023
- Give reason for the following: During reproduction inheritance of different proteins will lead to altered body designs.…2023
- All the reproductive methods of living organisms are broadly categorized into two types: 1. Asexual reproduction, and 2. Sexual…2023
- Name the part/organ of the human male reproductive system which is a common passage for both sperms as well as urine. where…2022
- Differentiate between the process of binary fission and multiple fission giving an example of each.2022
- Give reasons: (i) Placenta is extremely essential for foetal development. (ii) Uterine lining becomes thick and spongy after…2022
- Which of the following flowers will have higher possibility of self-pollination? Mustard, Papaya, Watermelon, Hibiscus List the…2022
- Which one of the two multicellular organisms - Spirogyra and Planaria reproduces by regeneration and why? Give an example of any…2022
- Mention the functions of Placenta Fallopian tubes Uterus and Ovary in the human female reproductive system.2022
- Name the reproductive and non-reproductive parts of bread mould (Rhizopus). List any two advantages of vegetative propagation.2022
- What happens when in a human female the egg released by the ovary is not fertilised? Name one bacterial and one viral infection…2022
- State one drawback of each of the following: 1/2 × 4=2 (i) Oral contraceptive pills (ii) Copper-T Under which category of…2022
- In the following figure showing a germinating gram seed, name the parts labelled as A, B and C: Why is part ' B ' considered to…2022
- Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.…2022
- In the given diagram, name the parts where (i) pollen grains are produced, and (ii) pollen grains are transferred. What happens…2022
- What is Regeneration? Explain the process of regeneration in Planaria.2022
- Suggest any two contraceptive methods to control the size of human population and explain them.2022
- Name the part/organ of the human female reproductive system where contraceptive devices such as loop or copper-T are placed to…2022
- In flowering plants, the pollen grains are transferred to stigma by pollination but the female germ cells are present in the…2022
- Mention one function each of the following organs in human male reproductive system: (i) Testis (ii) Scrotum (iii) Vas deferens…2022
- Name the two types of gametes produced by men. 1/2+1/2 Does a male child inherit X chromosome from his father? Justify. 1/2+1 How…2022
- The modes by which various organisms reproduce depend on the body design of the organisms. In asexual reproduction, a single…2022
- The modes by which various organisms reproduce depend on the body design of the organisms. In asexual reproduction, a single…2022
- The modes by which various organisms reproduce depend on the body design of the organisms. In asexual reproduction, a single…2022
Answers come from CBSE’s own marking schemes. How we source them.