Animal Reproduction MCQ Quiz - Objective Question with Answer for Animal Reproduction - Download Free PDF

The correct answer is a - 1, b - 2, c - 3, d - 4.

Key Points

• World Environment Protection Day is observed annually on 26th November to raise global awareness about environmental issues and promote sustainable practices.
• National Youth Day is celebrated on 12th January to honor the birth anniversary of Swami Vivekananda, who inspired youth worldwide with his teachings.
• International Youth Day is marked on 12th August to focus on youth-related issues and encourage global youth engagement in social development.
• World Press Freedom Day is observed on 3rd May to emphasize the importance of press freedom and safeguard journalists worldwide.
• The correct matching is a - 1, b - 2, c - 3, d - 4, reflecting accurate associations between the events and their respective dates.

Additional Information

• World Environment Protection Day
  • It aims to address critical environmental issues such as pollution, deforestation, and climate change.
  • The day promotes global cooperation to ensure environmental sustainability and biodiversity conservation.
• National Youth Day
  • The day commemorates Swami Vivekananda’s philosophy and ideals, which continue to inspire the younger generation.
  • The Indian government declared his birthday as National Youth Day in 1984 to motivate youth engagement in nation-building.
• International Youth Day
  • Proclaimed by the United Nations General Assembly in 1999 to promote youth rights and development globally.
  • The theme for International Youth Day changes annually to highlight critical issues concerning young people.
• World Press Freedom Day
  • Proclaimed by the United Nations General Assembly in 1993 following a recommendation by UNESCO.
  • The day highlights the importance of press freedom, safety of journalists, and ethical journalism in democratic societies.

The correct answer is Spores.

Key Points

• Spores are the primary reproductive structures in fungi and are responsible for their propagation and survival under unfavorable conditions.
• Fungal spores can be produced sexually (meiospores) or asexually (mitospores), depending on the mode of reproduction of the fungi.
• Spores are highly resistant to environmental stresses such as drought, heat, and UV radiation, allowing fungi to colonize diverse habitats.
• Examples of spore-producing fungi include mushrooms (basidiospores), molds (conidiospores), and yeasts (ascospores).
• The dispersal of spores occurs via air, water, or through animals, enabling fungi to spread and thrive across vast areas.

Additional Information

• Fungi Kingdom Overview
  • Fungi are eukaryotic organisms distinct from plants and animals, belonging to their own kingdom.
  • They are heterotrophic in nature, obtaining nutrients through absorption rather than photosynthesis.
  • Fungi play crucial ecological roles as decomposers, symbionts, and pathogens.
• Types of Spores in Fungi
  • Sexual Spores: Formed by the fusion of gametes, e.g., zygospores, ascospores, and basidiospores.
  • Asexual Spores: Produced without gamete fusion, e.g., conidiospores, sporangiospores, and chlamydospores.
• Fungal Reproduction
  • Fungi can reproduce sexually, asexually, or through a combination of both methods.
  • Asexual reproduction is faster and more common, enabling fungi to quickly colonize new environments.
• Adaptations of Spores
  • Spores are lightweight and often equipped with structures to aid in dispersal, such as wings or protective coatings.
  • They can remain dormant for extended periods, germinating only under favorable conditions.
• Importance of Fungi
  • Fungi are used in industries for producing antibiotics (e.g., penicillin), enzymes, and food products like bread and beer.
  • They also form symbiotic associations, such as mycorrhizae, which benefit plant growth.

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.

The correct answer is i - d, ii - a, iii - b, iv - c.

Key Points

• Ovary (i) - makes the female gametes (d): The primary function of the ovary is to produce the female gametes, also known as ova or eggs. It also secretes hormones such as estrogen and progesterone.
• Oviduct (ii) - fertilisation (a): The oviduct, also known as the fallopian tube, is the site where fertilisation occurs. The sperm meets the egg in the oviduct to form a zygote.
• Uterus (iii) - implantation (b): The uterus is the organ where the fertilised egg implants and develops into a fetus. It provides a nurturing environment for the developing embryo.
• Placenta (iv) - nourishes the growing embryo (c): The placenta is an organ that develops in the uterus during pregnancy. It provides oxygen and nutrients to the growing baby and removes waste products from the baby's blood.

 Additional Information

• Ovary
  • The ovaries are part of the female reproductive system and are located on each side of the uterus.
  • They are about the size and shape of an almond.
  • The ovaries also play a key role in the menstrual cycle and fertility.
• Oviduct
  • The oviducts are also known as fallopian tubes.
  • Each woman has two oviducts, one on each side of the uterus.
  • The oviducts are approximately 10-12 cm in length.
• Uterus
  • The uterus is also known as the womb.
  • It is a hollow, muscular organ located in the female pelvis between the bladder and rectum.
  • The uterus is about the size and shape of an upside-down pear.
• Placenta
  • The placenta is a temporary organ that develops during pregnancy.
  • It attaches to the wall of the uterus and connects to the baby via the umbilical cord.
  • The placenta is typically 9 inches in diameter and 1 inch thick.

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 Brood parasitism.Key Points

• Brood parasitism:-
  • It is a reproductive strategy in which a parasite lays its eggs in the nest of another individual of the same species or different species, and the host raises the parasite's young.
  • This strategy is often used by birds, such as cuckoos, cowbirds, and honeyguides, but it can also be observed in insects, fish, and mammals.
  • Brood parasites have evolved various adaptations to increase their chances of success, such as mimicking the appearance and behavior of the host's eggs or chicks, laying their eggs at the same time as the host, or removing the host's eggs.
  • Brood parasitism can have both costs and benefits for the host, depending on the degree of similarity between the parasite and the host, the number of parasites in the host's nest, and the availability of alternative nesting sites.

Additional Information

• Sexual parasitism:-
  • It also known as mate parasitism, refers to a reproductive strategy in which a male or female gains access to a mate or a nest by deceiving or coercing the other individual.
• Klepto parasitism, or kleptoparasitism:-
  • It​ refers to a feeding strategy in which a parasite steals food from another individual, often by chasing or harassing it.
• Competitive parasitism, or social parasitism:-
  • It refers to a reproductive strategy in which a parasite takes over the resources and/or reproduction of a host, often by manipulating its behavior or physiology.

The correct answer is Obelia.Key Points

• Metagenesis refers to a type of alternation of generations where the life cycle of an organism involves both sexual and asexual reproduction.
• In this process, the offspring of the sexual phase undergo a phase of asexual reproduction before they mature into the sexual phase.
• Obelia is a genus of colonial hydrozoans that exhibit metagenesis.
• They have a complex life cycle that involves both polyp and medusa stages, and the polyps undergo asexual reproduction to produce medusae.

Additional Information

• Spongilla is a genus of freshwater sponges that do not exhibit metagenesis.
  • They reproduce sexually by releasing sperm and eggs into the water, which then develop into larvae that settle and grow into adult sponges.
• Sycon is a genus of calcareous sponges that do not exhibit metagenesis.
  • They reproduce sexually by releasing sperm and eggs into the water, which then develop into free-swimming larvae that settle and grow into adult sponges.
• Euspongia is a genus of marine sponges that do not exhibit metagenesis.
  • They reproduce sexually by releasing sperm and eggs into the water, which then develop into free-swimming larvae that settle and grow into adult sponges.

The correct answer is Amoeba exhibit regeneration..

Key Points

• Regeneration is a process whereby some organisms can regrow lost or damaged parts of their body.
• Specialised cells are responsible for regeneration and they multiply rapidly to form new tissues.
• Organisms such as Hydra and Planaria are known for their remarkable regenerative capabilities.
• Amoeba, being a unicellular organism, does not exhibit regeneration as it reproduces by binary fission.

Additional Information

• Binary Fission:
  • A type of asexual reproduction where a single organism divides into two equal parts, each becoming a new organism.
  • Amoeba reproduces through binary fission.
• Hydra:
  • A small, freshwater organism known for its ability to regenerate entire bodies from small pieces.
  • Regeneration occurs through the proliferation of specialized cells called interstitial cells.
• Planaria:
  • A type of flatworm capable of regenerating any part of its body.
  • Planaria utilize pluripotent stem cells known as neoblasts for regeneration.
• Specialised Cells:
  • These cells have the ability to divide and differentiate to form various types of tissues and organs.
  • They play a crucial role in the regeneration process.

The correct answer is Both I and II.

Key Points

• Both Hydra and Planaria are capable of regeneration, a biological process where organisms replace or restore lost or amputated body parts.
• Hydra can be cut into any number of pieces, and each piece can grow into a complete organism.
• Planaria, a type of flatworm, also has remarkable regenerative abilities. Even small fragments can regenerate into a whole new organism.
• These abilities are primarily due to the presence of stem cells, which can differentiate into various cell types required to form a complete organism.

Additional Information

• Regeneration: The process by which organisms replace or restore body parts that have been lost or damaged.
• Stem Cells: Undifferentiated cells that have the ability to differentiate into various specialized cells and regenerate tissues.
• Hydra: A small, freshwater organism known for its regenerative abilities, belonging to the phylum Cnidaria.
• Planaria: Flatworms belonging to the class Turbellaria, known for their regenerative capabilities, especially studied in laboratory settings.
• Biological Research: Both Hydra and Planaria are extensively used in biological research to understand regeneration and stem cell biology.

The correct answer is i - d, ii - a, iii - b, iv - c.

Key Points

• Ovary (i) - makes the female gametes (d): The primary function of the ovary is to produce the female gametes, also known as ova or eggs. It also secretes hormones such as estrogen and progesterone.
• Oviduct (ii) - fertilisation (a): The oviduct, also known as the fallopian tube, is the site where fertilisation occurs. The sperm meets the egg in the oviduct to form a zygote.
• Uterus (iii) - implantation (b): The uterus is the organ where the fertilised egg implants and develops into a fetus. It provides a nurturing environment for the developing embryo.
• Placenta (iv) - nourishes the growing embryo (c): The placenta is an organ that develops in the uterus during pregnancy. It provides oxygen and nutrients to the growing baby and removes waste products from the baby's blood.

 Additional Information

• Ovary
  • The ovaries are part of the female reproductive system and are located on each side of the uterus.
  • They are about the size and shape of an almond.
  • The ovaries also play a key role in the menstrual cycle and fertility.
• Oviduct
  • The oviducts are also known as fallopian tubes.
  • Each woman has two oviducts, one on each side of the uterus.
  • The oviducts are approximately 10-12 cm in length.
• Uterus
  • The uterus is also known as the womb.
  • It is a hollow, muscular organ located in the female pelvis between the bladder and rectum.
  • The uterus is about the size and shape of an upside-down pear.
• Placenta
  • The placenta is a temporary organ that develops during pregnancy.
  • It attaches to the wall of the uterus and connects to the baby via the umbilical cord.
  • The placenta is typically 9 inches in diameter and 1 inch thick.

The Correct answer is Condom — Mechanical barrier.

Key Points

• Condoms act as a mechanical barrier by physically preventing the sperm from reaching the egg, thereby avoiding fertilization.
• They are made of materials such as latex, polyurethane, or lambskin, which provide an effective barrier to sperm and sexually transmitted infections (STIs).
• Condoms are one of the most widely used contraceptive methods and are effective in preventing unintended pregnancies and reducing the risk of HIV/AIDS and other STIs.
• They are easy to use, widely available, and do not require a prescription, making them a popular choice worldwide.
• Both male and female condoms are available, but male condoms are more commonly used.
• Condoms do not involve hormones, which makes them suitable for individuals who cannot or do not want to use hormonal contraceptives.

 Additional Information

• Contraceptive pills — Uterine device
  • This is incorrect because contraceptive pills do not act as uterine devices. Instead, they contain hormones (estrogen and progestin) that prevent ovulation, thicken cervical mucus, and thin the uterine lining to avoid pregnancy.
  • Contraceptive pills are an example of hormonal contraception, not a physical device.
• Copper T — Hormonal imbalance
  • This is incorrect because Copper T is a type of intrauterine device (IUD) that works by releasing copper ions, which are toxic to sperm. It does not cause hormonal imbalance.
  • Copper IUDs are non-hormonal and function as a long-term reversible contraceptive method.
• Tubectomy — Chemical barrier
  • This is incorrect because tubectomy is a form of permanent surgical sterilization in females. It involves blocking or cutting the fallopian tubes to prevent the egg from reaching the uterus.
  • It is not a chemical barrier but a surgical procedure.

The correct answer is a - 1, b - 2, c - 3, d - 4.

Key Points

• World Environment Protection Day is observed annually on 26th November to raise global awareness about environmental issues and promote sustainable practices.
• National Youth Day is celebrated on 12th January to honor the birth anniversary of Swami Vivekananda, who inspired youth worldwide with his teachings.
• International Youth Day is marked on 12th August to focus on youth-related issues and encourage global youth engagement in social development.
• World Press Freedom Day is observed on 3rd May to emphasize the importance of press freedom and safeguard journalists worldwide.
• The correct matching is a - 1, b - 2, c - 3, d - 4, reflecting accurate associations between the events and their respective dates.

Additional Information

• World Environment Protection Day
  • It aims to address critical environmental issues such as pollution, deforestation, and climate change.
  • The day promotes global cooperation to ensure environmental sustainability and biodiversity conservation.
• National Youth Day
  • The day commemorates Swami Vivekananda’s philosophy and ideals, which continue to inspire the younger generation.
  • The Indian government declared his birthday as National Youth Day in 1984 to motivate youth engagement in nation-building.
• International Youth Day
  • Proclaimed by the United Nations General Assembly in 1999 to promote youth rights and development globally.
  • The theme for International Youth Day changes annually to highlight critical issues concerning young people.
• World Press Freedom Day
  • Proclaimed by the United Nations General Assembly in 1993 following a recommendation by UNESCO.
  • The day highlights the importance of press freedom, safety of journalists, and ethical journalism in democratic societies.

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 Brood parasitism.Key Points

• Brood parasitism:-
  • It is a reproductive strategy in which a parasite lays its eggs in the nest of another individual of the same species or different species, and the host raises the parasite's young.
  • This strategy is often used by birds, such as cuckoos, cowbirds, and honeyguides, but it can also be observed in insects, fish, and mammals.
  • Brood parasites have evolved various adaptations to increase their chances of success, such as mimicking the appearance and behavior of the host's eggs or chicks, laying their eggs at the same time as the host, or removing the host's eggs.
  • Brood parasitism can have both costs and benefits for the host, depending on the degree of similarity between the parasite and the host, the number of parasites in the host's nest, and the availability of alternative nesting sites.

Additional Information

• Sexual parasitism:-
  • It also known as mate parasitism, refers to a reproductive strategy in which a male or female gains access to a mate or a nest by deceiving or coercing the other individual.
• Klepto parasitism, or kleptoparasitism:-
  • It​ refers to a feeding strategy in which a parasite steals food from another individual, often by chasing or harassing it.
• Competitive parasitism, or social parasitism:-
  • It refers to a reproductive strategy in which a parasite takes over the resources and/or reproduction of a host, often by manipulating its behavior or physiology.