Self Studies
Self Studies
Self Studies
Self Studies

Reproduction in Organisms Test - 52

Result Self Studies

Reproduction in Organisms Test - 52
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Isogamy is found in
    Solution
    The fusion of similar motile gametes is known as isogamous. Monocystis is an endoparasite in the seminal vesicle and coelom of earthworms. Fusing gametes do not differ morphologically but may be different physiologically. The isogamous gametes fuses to form zygote which develops into sporoblast, sporocyst, trophozoite and finally, to young trophozoite.
    So, the correct answer is option B.
  • Question 2
    1 / -0
    Hydra reproduces by budding. This is an example of:
    Solution
    • Budding is a type of asexual reproduction which does not involve the fusion of gametes. 
    • A new organism develops from an outgrowth or bud due to cell division at one particular site. 
    • The bud remains attached to the parent plant and separates after it gets mature and grows into a new individual. Budding is seen in Hydra, yeast.
    • Thus, correct answer is option A. 
  • Question 3
    1 / -0
    The term parthenogenesis was coined by
    Solution
    The term parthenogenesis was coined by Richard Owen in 1849. He defined it as a method of creating individual by single ovum. It is the development of an embryo from an unfertilised egg or if a spermatozoa does penetrate the egg, there is no union of male and female pronuclei. It is a mode of asexual reproduction. On the basis of division, it is of two types apomictic parthenogenesis and automictic parthenogenesis.
    So, the correct answer is option D.
  • Question 4
    1 / -0
    Identify the wrong statement.
    Solution
    Vegetatively propagated plants are the clone of their own parents because the fusion of gametes does not take place in vegetative propagation so there is no chance of recombination and variation.The parent cell divides to form daughter cell by mitosis due to which the offspring is genetically identical to the parent. The statement is true.
    Organisms exhibiting external fertilization release a large number of gametes to increase the chance of fertilization and increase the rate of survival of the gametes which are affected by the unfavorable condition in the environment. The statement is true.
    Parthenogenesis is the development of an embryo from an unfertilized egg or if a spermatozoa does penetrate the egg, there is no union of male and female pronuclei. It is a mode of asexual reproduction. The statement is false.
    Alternaria solani is a deuteromycete with a polycyclic life cycle. Alternaria solani reproduces aesexually by means of conidia. The statement is true.
    So, the correct answer is option C.
  • Question 5
    1 / -0
    Parthenogenesis is
    Solution

    Correct Option: A

    Explanation:

    • Parthenogenesis is the development of an egg or ovum into a spring without fertilization.

    Hence, parthenogenesis is formation of egg without fertilization.

  • Question 6
    1 / -0
    Identify from the following group of animals which exhibit oestrus cycle
    Solution
    Estrous cycle is a reproductive cycle of females of non-primate vertebrates. The gap between two estrus periods is known as estrous cycle. The females are highly receptive during estrus period. It is an indication of breeding period because one or more periods of estrus may occur during the breeding season of a species. Some animals like dogs are monoestrous as they have only one estrous phase in their breeding cycle. Males can recognize a female in heat by smell of pheromones. Lion, deer, dog and cow are non primates which exhibit estrus cycle.
    So, the correct answer is option A.
  • Question 7
    1 / -0
    The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called
    Solution
    The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called zoospores. It is a asexual motile spore. It uses flagella for locomotion. The zoospores are liberated either by the disintegration of the zoosporangial wall or by the formation of an apical pore on the zoosporangium. After liberation the zoospores swim for a while, then with­draw their flagella, encyst and ulti­mately germinate into new plants.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    In oogamy, fertilization occurs between
    Solution
    Oogamy is a form of sexual reproduction. It is a form of anisogamy (heterogamy) in which the female gamete is significantly larger than the male gamete and is non-motile.The male gametes are  smaller in size and motile 
    So, the correct option is 'Large non-motile female gamete and small motile male gamete'.
  • Question 9
    1 / -0
    Fusion of a male gamete with egg in embryo sac is
    Solution
    Syngamy and triple fusion are two events of sexual reproduction in plants. Syngamy is the fusion of one of the male gamete with the egg cell to produce a zygote while In triple fusion, second male gamete fuses with two polar nuclei to produce primary endosperm nucleus.
    Since two types of fusions, syngamy and triple fusion take place in an embryo sac the phenomenon is termed double Fertilisation.
    So, the correct answer is 'Syngamy'.
  • Question 10
    1 / -0
    Foetus developing in the genital track without getting nourishment from the mother is a case of
    Solution
    Ovipary is the development of foetus outside the mother's womb. Example, egg-laying birds.
    Vivipary is the development of foetus inside the mother's womb along with nourishment from the mother with the help of placenta. Example, humans.
    Ovo-vivipary is the development of foetus inside the mother's womb but without nourishment from the mother with the placenta. Example, certain sharks and fishes.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Selfstudy
Selfstudy
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now