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Reproduction in Organisms Test - 34

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Reproduction in Organisms Test - 34
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  • Question 1
    1 / -0
    Egg-producing animals such as birds are called:
    Solution
    Unisexual is where the organism is either male or female.
    Oviparous animals are those that lay eggs, with little or no other embryonic development within the mother.
    Viviparous are animals that give birth to young ones.
    Hermaphrodite is the one which has both male and female reproductive organs.
    So, the correct answer is option B.
  • Question 2
    1 / -0
    Purpose of tubectomy is to prevent
    Solution
    Tubectomy is a surgical procedure for sterilization in which a woman's fallopian tubes are clamped and blocked, or severed and sealed, which prevents eggs from reaching the uterus for implantation, thereby no fertilization can takes place. It is considered the permanent method of birth control. 
  • Question 3
    1 / -0
    Animals which give birth to young ones are called as
    Solution
    Amphibious are the animals that can live on water as well as on land.
    Oviparous are the animals that lay eggs.
    Triploblastic describes the animal having a body composed of three embryonic cell layers as the ectoderm, mesoderm, and endoderm.
    Viviparous are animals that give birth to live young one that has developed inside the body of the parent.
    So, the correct answer is option D.
  • Question 4
    1 / -0
    Which one of the following is the incorrect matching of the events occuring during menstrual cycle?
    Solution
    In secretory phase, Corpus luteum is developed from the remaining parts of Graafian follicle. Corpus luteum secretes large amounts of progesterone which is essential for maintenance of endometrium which is thickened by estrogen. In this phase, the endometrium further thickens due to estrogen hormone. LH hormone stimulates the corpus luteum to secrete estrogen and progesterone which inhibit the release of FSH and LH. This phase lasts for 14 days. So, secretion of FSH is decreased during this phase. Due to decreased secretion of FSH, development of new follicles during the secretory phase is prevented.
  • Question 5
    1 / -0
    The transfer of pollen grains from anther to stigma is termed as 
    Solution
    Pollination is the process by which pollen is transferred from the anther or the male part to the stigma or the female part of the plant thereby enabling fertilization and reproduction.
    Thus, the correct answer is option (C), Pollination'.
  • Question 6
    1 / -0
    Which type of reproduction of Hydra is most common?
    Solution
    Budding is a form of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at particular site. Hydra reproduces through budding.
    Thus, the correct answer is option (A), 'Budding'.
  • Question 7
    1 / -0
    Egg-laying animals are known as:
    Solution
    • Oviparous animals lay eggs and the offspring development takes place outside the animal's body. (Example: Birds).
    • Viviparous animals are those that give birth to young ones. (Example: Human beings).
    • Sterile organisms are those which are not able to reproduce. (Example: Mule).
    • Hermaphrodite is an organism that has reproductive organs of both sexes. (Example: Earthworm).
    So, the correct answer is option B.
  • Question 8
    1 / -0
    The mode of reproduction in which an individual produces offspring without the help of another individual is called
    Solution
    • In asexual reproduction, a single individual is capable of producing offsprings.
    • These organisms are identical copies of each other as well as their parent.
    • While sexual reproduction involves, the involvement of another organism to produce offspring.
    So, the correct option is 'Asexual reproduction'.
  • Question 9
    1 / -0

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    Which of the following organism affects liver of cattle?
  • Question 10
    1 / -0
    Hydra reproduce by
    Solution
    Organisms such as Hydra use regenerative cells for reproduction in the process of budding. In Hydra, a bud develops as an outgrowth due to repeated cell division at one specific site.
    Thus, the correct answer is option (D), 'Budding'.
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