Animals which lay eggs are called

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Animals that lay eggs are called oviparous animals. Their eggs develop outside the body and provide protection to the developing embryo. Some common examples of oviparous animals are birds, reptiles, insects, and fish. The following are the features of oviparous animals:

  • Eggs are laid outside the body, usually in a suitable habitat that provides protection and nourishment.
  • Eggs have tough shells to protect the developing embryo.
  • Oviparous animals have specialized structures like ovaries, oviducts, and eggshell glands to lay eggs.
  • Oviparous animals do not provide direct parental care to their offspring.
  • Oviparous animals do not undergo internal fertilization.
  • Oviparous animals can lay large numbers of eggs at a time, increasing the chances of survival.
  • Eggs have a yolk, which provides nourishment to the developing embryo.

Oviparous Animals

Oviparous Animals

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CBSE CLASS XII Related Questions

  • 1.
    In Pisum sativum, the flower colour may be violet (V) or white (v). What proportion of the offspring in a cross of "VV × vv" would be expected to be violet?

      • 25%
      • 50%
      • 75%
      • 100%

    • 2.
      Copper releasing intrauterine devices are very effective and popular contraceptive devices. Name any two copper releasing IUDs. Write two reasons that make them effective contraceptives.


        • 3.

          Assertion (A) : The two chains of DNA have antipolarity.

          Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

            • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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            • Assertion (A) is true, but Reason (R) is false.
            • Assertion (A) is false, but Reason (R) is true.

          • 4.
            Choose a correct option that shows an interaction in which one species benefits while the other is neither harmed nor benefitted.

              • Mycorrhizal associations between fungi and roots of higher plants
              • Sea anemone and clownfish
              • Abingdon tortoises and goats in the Galapagos Island
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            • 5.

              "Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.


                • 6.
                  Assertion (A) : The milk produced by transgenic cow 'Rosie' was nutritionally more balanced product for human babies than natural cow milk.
                  Reason (R) : It was human protein enriched milk containing human alpha lactaglobulin.

                    • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
                    • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
                    • Assertion (A) is true, but Reason (R) is false.
                    • Assertion (A) is false, but Reason (R) is true.
                  CBSE CLASS XII Previous Year Papers

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