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Subjects

Science

Reproduction

In this Class 10 Science topic from the “World of Living” chapter, students explore how organisms produce new individuals and why reproduction is essential for the continuation of life. They compare asexual and sexual reproduction, study reproductive processes in plants and humans, and understand puberty, the human reproductive system, fertilisation, menstruation, and basic reproductive health. The topic also introduces contraception and the role of responsible choices in preventing unwanted pregnancy and sexually transmitted infections.

Medium · Level 2 · 25 questions

TOPIC PRACTICE

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25 questions

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  1. A zygote is the first cell formed by fertilisation, and an embryo develops through its divisions
  2. A zygote is always a fruit and an embryo is a seed
  3. A zygote is the male part of a flower
  4. An embryo is only a pollen grain
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  1. To receive support and nourishment for development
  2. For pollination
  3. To produce sperm
  4. To produce spores
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  1. It helps exchange nutrients, oxygen and wastes between the mother and embryo
  2. It produces sperm
  3. It produces pollen grains
  4. It produces seeds
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  1. The prepared inner lining of the uterus breaks down and leaves the body with blood
  2. Sperm production in the testes stops
  3. Pollen grains land on the stigma
  4. The ovule becomes a seed
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  1. They influence the maturation of reproductive organs and the development of secondary sexual characteristics
  2. They only make food sweet
  3. They produce spores
  4. They bring about pollination
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  1. Infancy
  2. Adolescence
  3. Adulthood
  4. Seed germination
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  1. It helps prevent pregnancy and reduce the risk of some sexually transmitted infections
  2. It performs both digestion and respiration
  3. It produces both seeds and fruits
  4. It produces both blood and bile
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  1. It releases copper ions that reduce sperm motility and their ability to fertilise an egg
  2. It produces sperm in the testes
  3. It changes the ovary into a seed
  4. It produces pollen grains
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  1. They alter hormone levels and can prevent ovulation
  2. They change food into seeds
  3. They produce oxygen in the lungs
  4. They change the uterus into the heart
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  1. It involves surgically cutting or blocking reproductive ducts
  2. It involves only flowers falling
  3. It stops digestion through saliva
  4. It causes the lungs to shrink
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  1. Some STIs can spread through unprotected sexual contact
  2. STIs spread only through the air
  3. STIs occur only through leaves
  4. STIs have no connection with reproductive health
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  1. They can help reduce infection risks and support informed decisions
  2. They produce spores in the body
  3. They increase pollination
  4. They completely stop digestion
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  1. So that fertilisation restores the usual chromosome number
  2. So that the offspring has no chromosomes
  3. So that the chromosome number doubles in every generation
  4. So that reproduction stops
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  1. Repeated cell division
  2. Transpiration
  3. Pollination
  4. Urine formation
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  1. The pollen tube provides a route from the stigma, through the style, to the ovule in the ovary
  2. The male gamete swims through blood
  3. The ovule is outside the flower
  4. Pollen grains always form in the root
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  1. A male (staminate) flower
  2. A female (pistillate) flower
  3. A bisexual flower
  4. A fruit
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  1. A male flower
  2. A female flower
  3. A bisexual flower
  4. A spore
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  1. They help carry pollen grains from the anther to the stigma
  2. They change seeds into blood
  3. They change the ovary into testes
  4. They produce oxygen in the uterus
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  1. It can protect seeds and help disperse them
  2. It produces sperm
  3. It exchanges gases in the lungs
  4. It filters urine
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  1. Because it usually produces little genetic variation
  2. Because it produces no offspring
  3. Because it always involves two parents
  4. Because an egg and sperm always fuse
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  1. Because it can produce genetic variation
  2. Because it produces no offspring
  3. Because it produces food
  4. Because it stops respiration
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  1. Release of an egg cell from an ovary
  2. Release of sperm from the testes
  3. Transfer of pollen to a stigma
  4. Germination of a seed
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  1. To provide a place for the embryo to implant and develop
  2. To produce sperm
  3. To produce pollen grains
  4. To digest fats
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  1. It supports informed choices about safe behaviour, family planning, and preventing infections
  2. It stops pollination
  3. It makes food in leaves
  4. It changes testes into ovaries
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  1. Reproduction is only the process of making an individual organism larger
  2. Reproduction produces offspring and helps maintain a species; sexual reproduction can increase variation
  3. Reproduction occurs only in plants
  4. Genetic information is never passed on during reproduction

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