Animal Reproduction MCQ Quiz in मल्याळम - Objective Question with Answer for Animal Reproduction - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക

The correct answer is Sporangia.

Key Points

• Sporangia are specialized structures where spores are produced and contained in fungi.
• They can be found at the tips of hyphae and are a critical part of the fungi’s reproductive system.
• Upon maturity, the sporangia release spores into the environment for dispersal.
• Sporangia can vary in shape and size depending on the type of fungus.

Additional Information

• Hyphae: Thread-like structures that make up the mycelium of a fungus.
• Spores: Reproductive cells capable of developing into a new individual without fusion with another cell.
• Mycelium: The vegetative part of a fungus consisting of a network of fine white filaments (hyphae).
• Sporulation: The process of spore formation.
• Fungal Reproduction: Can be sexual or asexual, with sporangia being involved in asexual reproduction through spore production.

The correct answer is Reproduction.

Key Points

• The creation of a DNA copy is a fundamental event in the process of reproduction.
• During reproduction, organisms produce new individuals, and this process involves the replication of DNA to ensure that the offspring receive the correct genetic information.
• The DNA replication process ensures that each new cell or organism has the same genetic information as its parent.
• This process is critical for the continuity of genetic information from one generation to the next.
• Both sexual and asexual reproduction involve the creation of a DNA copy, ensuring genetic material is passed on.

 Additional Information

• Respiration
  • Respiration is the process through which organisms convert oxygen and glucose into energy, carbon dioxide, and water.
  • This process does not involve the creation of DNA copies.
• Excretion
  • Excretion is the process of removing waste products and toxins from the body.
  • This process involves the kidneys, liver, and skin but does not involve the replication of DNA.
• Circulation
  • The circulatory system is responsible for transporting blood, nutrients, gases, and wastes to and from the cells of the body.
  • It does not include the process of creating DNA copies.

The correct answer is Hydra.

Key Points

• Hydra is a genus of small, freshwater organisms known for their remarkable regenerative abilities.
• In Hydra, budding is a form of asexual reproduction where new individuals develop from the body wall of the parent organism.
• The budding process involves regenerative cells that proliferate and differentiate to form a new organism.
• Once the bud matures, it detaches from the parent Hydra and becomes an independent organism.
• This method of reproduction allows Hydra to rapidly increase their population under favorable environmental conditions.

Additional Information

• Regeneration:
  • Regeneration is the process by which some organisms replace or restore lost or amputated body parts.
  • Hydra is one of the simplest organisms with extensive regenerative abilities.
• Asexual Reproduction:
  • Asexual reproduction is a mode of reproduction that does not involve the fusion of gametes.
  • Offspring produced through asexual reproduction are genetically identical to the parent organism.
• Stem Cells:
  • In Hydra, regenerative cells are akin to stem cells in more complex organisms.
  • These cells can differentiate into various cell types necessary for forming new tissues and organs.
• Environmental Factors:
  • The rate of budding in Hydra can be influenced by environmental factors such as water temperature, food availability, and water quality.
  • Optimal conditions can lead to an increased rate of budding and population growth.

The correct answer is Budding.

Key Points

• The given figure is of a hydra.
• Budding is a form of asexual reproduction commonly found in organisms such as yeasts, hydras, and some invertebrates.
• During budding, a new organism develops from an outgrowth or bud due to cell division at one particular site.
• The newly formed bud remains attached to the parent organism and separates only when it is mature, leaving behind scar tissue.
• Budding allows for rapid population growth as it does not require a mate for reproduction.
• The offspring produced by budding are genetically identical to the parent organism, ensuring the continuation of successful genetic traits.

Additional Information

• Binary Fission
  • A form of asexual reproduction where a single organism divides into two parts, each of which becomes a separate organism.
  • Commonly observed in prokaryotic organisms such as bacteria.
• Multiple Fission
  • A type of asexual reproduction in which the parent organism divides into many daughter cells simultaneously.
  • Seen in some protozoans like Plasmodium.
• Sporulation
  • A reproductive process where spores are produced by organisms like fungi, algae, and some bacteria.
  • Spores are resistant to harsh environmental conditions and can develop into a new organism when conditions become favorable.

The Correct answer is Urethra.

Key Points

• The urethra in males serves as a common passage for both urine and sperm.
• It is a tube-like structure that connects the urinary bladder to the external part of the body for the excretion of urine.
• During ejaculation, sperm from the testes passes through the urethra and exits the body.
• The urethra is part of both the urinary system and the reproductive system in males.
• This dual function is facilitated by a special muscular valve called the internal urethral sphincter, which prevents urine from mixing with sperm during ejaculation.
• Located at the tip of the penis, the urethra opens to the outside of the body, allowing for the discharge of fluids.
• It plays a crucial role in maintaining proper functioning of the male reproductive and urinary systems.

 Additional Information

• Vas deferens
  • The vas deferens is a tube that transports sperm from the testes to the urethra.
  • It is part of the male reproductive system but does not serve as a passage for urine.
  • The vas deferens plays a role in storing and carrying sperm during ejaculation.
• Scrotum
  • The scrotum is a pouch-like structure that houses the testes.
  • It maintains the optimal temperature for sperm production but does not function as a passage for urine or sperm.
  • Its primary role is in the reproductive system, ensuring proper functioning of the testes.
• Urinary bladder
  • The urinary bladder is a muscular organ that stores urine until it is excreted through the urethra.
  • It is part of the urinary system and does not play any role in the passage of sperm.
  • The bladder ensures controlled release of urine from the body through the urethra.

The correct answer is Global warming.

Key Points

• Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the release of greenhouse gases.
• It is a significant environmental issue but not directly related to reproductive health or reproduction-related problems.
• Reproduction-related problems include issues like sexually transmitted diseases (STDs), infertility, and complications arising from abortion.
• Global warming impacts ecosystems, weather patterns, and sea levels but does not directly influence human reproductive health.

Additional Information

• Sexually Transmitted Diseases (STDs)
  • Infections that are primarily spread through sexual contact.
  • Common STDs include chlamydia, gonorrhea, syphilis, and HIV/AIDS.
  • STDs can cause serious health problems if left untreated.
• Infertility
  • Defined as the inability to conceive after one year of regular, unprotected intercourse.
  • Causes can be due to issues in men, women, or both partners.
  • Treatments include medication, surgery, and assisted reproductive technologies like IVF.
• Abortion
  • The medical termination of a pregnancy.
  • Can be spontaneous (miscarriage) or induced (medical or surgical).
  • Access to safe abortion services is crucial for women's health and rights.
• Global Warming
  • Caused by the buildup of greenhouse gases like carbon dioxide and methane in the atmosphere.
  • Leads to climate change, affecting weather patterns, sea levels, and ecosystems.
  • Efforts to combat global warming include reducing emissions, increasing renewable energy use, and enhancing energy efficiency.