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English Medium कक्षा १० - CBSE Question Bank Solutions for Science

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Answer the following question.
List two agents of pollination?

[7] How do Organisms Reproduce?
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The flower of the Hibiscus plant is ______ 

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The seed that contains the future plant is called the ______ 

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The process of release of eggs from the ovary is called ______ 

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In human beings, fertilization occurs in the ______

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Pollen grains are produced by ______ 

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Variations occur as a result of ______ 

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Length of pollen tube depends on the distance between ______ 

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Which out of the following processes does not lead to the formation of clones.

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Which among the following statements are true for unisexual flowers?

  1.  They possess both stamen and pistil
  2. They possess either stamen or pistil
  3. They exhibit cross pollination
  4. Unisexual flowers possessing only stamens cannot produce fruits
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Which among the following statements are true for sexual reproduction in flowering plants?

  1. It requires two types of gametes
  2. Fertilisation is a compulsory event
  3. It always results in formation of zygote
  4. Offspring formed are clones
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In a bisexual flower inspite of the young stamens being removed artificially, the flower produces fruit. Provide a suitable explanation for the above situation.

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Give reason for the following:

Fertilization cannot take place in flowers if pollination does not occur.

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Is the chromosome number of zygote, embryonal cells and adult of a particular organism always constant? How is the constancy maintained in these three stages?

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Where is the zygote located in the flower after fertilization?

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Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the flower.

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Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.

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State the number of sets of chromosomes present in a zygote.

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Sexual maturation of reproductive tissues and organs are necessary link for reproduction. Elucidate.

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Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.

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