Self Studies
Self Studies
Self Studies
Self Studies

How do Organisms Reproduce Test - 23

Result Self Studies

How do Organisms Reproduce Test - 23
  • 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
    Once a girl starts menstruating, her body needs more:
    Solution
    • Once a girl starts menstruation, her body needs more iron to make up for the amount of iron that is lost in their menstrual cycle. 
    • During menstruation, blood flows out from the body after a fixed interval. 
    • As we know haemoglobin is composed of a protein called globulin, four heme groups, each associated with an iron atom. 
    • In the absence of iron, the person becomes anaemic. So, to avoid this condition in females, it is necessary to take more iron.
  • Question 2
    1 / -0
    ______ causes pimples in both boys and girls at puberty.
    Solution
    In girls and boys, various changes take place during puberty. One of them is the effect of increased amounts of androgen. The androgen causes an increased secretion of oil or sebum from the skin and the resultant oil causes variable amounts of acne. Also, rising levels of androgens can change the fatty acid composition of perspiration, resulting in a more 'adult' body odor.
    Thus, the correct answer is option A.
  • Question 3
    1 / -0
    Rhizopus reproduces by the method of:
    Solution
    Rhizopus is a genus of common saprophytic fungi. Rhizopus reproduce by forming asexual and sexual spores. In asexual reproduction, spores are produced inside a spherical structure, the sporangium. These spores are released out by the bursting of the sporangium. In getting a suitable substratum, the spores germinate and form new individuals. In sexual reproduction, a dark zygospore is produced at the point where two compatible mycelia fuse.
    Thus, the correct answer is option B, 'Spore formation'.
  • Question 4
    1 / -0
    Generally, girls have ______ voice whereas the voice in boys is _________.
    Solution
    • The human voice has many components and the pitch is an integral part of the human voice. The pitch of the voice is defined as the 'rate of vibration of the vocal folds'. 
    • The sound of the voice changes as the rate of vibrations varies. As the number of vibrations per second increases, so does the pitch, meaning the voice would sound higher. 
    • Faster rates from higher voices or higher pitches while slower rate elicits deeper voices or lower pitches. The vibrations and the speed at which they vibrate are dependent on the length and thickness of vocal cords. 
    • Women tend to have higher voices or higher pitches than men do because they have shorter vocal cords.
    So, the correct answer is option A.
  • Question 5
    1 / -0
    The new individual grows out of the parent's body in:
    Solution
    • Hydra is an aquatic animal that reproduces both sexually and asexually.  When plenty of food is available Hydra undergoes an asexual mode of reproduction by producing a small outgrowth called 'bud' on its body. This type of asexual reproduction is called budding. The bud stays attached to the parent body and keeps growing. Once this bud matures, it breaks off from the parent body and grows individually as a new individual.
    • Amoeba and Paramecium undergo fission, where the parent cell splits into two daughter cells.
    • Plasmodium exhibits multiple fission, where many daughter cells are produced.

      • So, the correct answer is option A.

  • Question 6
    1 / -0
    The reproductive cycle in primate females is called:
    Solution
    The reproductive cycle in primate females is the menstrual cycle which is hormonal and reproductive tissue changes that occur in adult female mammals during their reproductive years and it is repeated at an average interval of about 28/29 days. It is an essential part of making sexual reproduction possible because it is necessary for the production of eggs.
    So, the correct answer is option A.
  • Question 7
    1 / -0
    Binary fission in some organisms occurs in definite orientation in relation to the cell structures. One such organism is:
    Solution
    • Binary fission is a type of asexual reproduction in which a single organism becomes two independent organisms.
    • In some organisms like an amoeba, during cell division, the cell splits into two in any plane.
    • In some other organisms, binary fission occurs in a definite plane. For e.g. Leishmania 
    • So, the correct answer is 'Leishmania'.
  • Question 8
    1 / -0
    The third floral whorl of a flower comprises of:
    Solution

    • The first and second whorl of a flower consists of sepals and petals, respectively.
    • The androecium is the third whorl of a flower. Each unit is called stamen. It is the male reproductive organ of the flower. A stamen is made up of a stalk called the filament and an anther. 
    • The fourth whorl, however, is comprised of the female reproductive structure called gynoecium. Each unit is called carpel/pistil.

    So the correct answer is C 'Stamens' 
  • Question 9
    1 / -0
    The second floral whorl of a flower is formed of:
    Solution
    The second whorl is comprised of petals, which are usually brightly coloured;  collectively they form the corolla.
    Option "B" is correct.

  • Question 10
    1 / -0
    Which of the following reproduces by budding?
    Solution
    Budding is the main method of reproduction in yeast. 
    During favourable conditions, yeast reproduces by budding in which a small outgrowth called bud forms on parent cell. 
    After this nucleus of parent cell divides and migrates into the bud. This bud increases in size and finally breaks off from the parent cell to grow individually.
    Thus, the correct answer is option A.

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
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