The process which is essential for continuing and survival of species is:
Reproduction is essential for the continuation and survival of species as it ensures the production of offspring.
The type of reproduction which is necessary for evolution is:
Sexual reproduction is necessary for evolution as it introduces genetic variation through the combination of genetic material from two parents.
The unicellular structure, responsible for asexual reproduction without fusion is:
Spores are unicellular structures responsible for asexual reproduction without the fusion of gametes.
The example of a stem that runs horizontally on the surface of the soil to produce vegetatively:
Ginger is an example of a stem that runs horizontally on the surface of the soil to produce vegetatively.
Plant stem that arises from buds on the base of parent plants are:
Suckers are plant stems that arise from buds on the base of parent plants.
The type of seed production without fusion of male and female gametes is:
Apomixis is the type of seed production without the fusion of male and female gametes.
The female gametophyte of angiospermic plant is:
The female gametophyte of an angiospermic plant is the embryo sac.
The 3N zygote in angiosperm develops into:
The 3N zygote in angiosperms develops into the endosperm, which provides nourishment to the developing embryo.
The male gonads in rabbit are:
The male gonads in rabbits are the testes, which produce sperm and male hormones.
The female gametes are fertilized in the rear end of:
Female gametes are typically fertilized in the fallopian tube, which is also known as the oviduct.
What is the main purpose of reproduction in living organisms?
The main purpose of reproduction in living organisms is to produce offspring of their own kind, ensuring the continuation of the species.
Which of the following does not involve gamete fusion?
Asexual reproduction does not involve the fusion of gametes, unlike sexual reproduction, fertilization, and pollination.
What type of reproduction involves genetic recombination?
Sexual reproduction involves genetic recombination through the fusion of gametes from two parents.
Which of the following is not an artificial method of vegetative propagation?
Spore formation is a natural method of reproduction and not an artificial method of vegetative propagation.
Where is the male gametophyte developed in plants?
The male gametophyte in plants is developed in the pollen tube.
What is the function of the carpel in flowers?
The carpel in flowers contains the ovule in the ovary, which is essential for reproduction.
What is pollination?
Pollination is the process of transferring pollen grains from the anther to the stigma of a flower.
In double fertilization, the second male gamete fuses with:
In double fertilization, the second male gamete fuses with the secondary nucleus (2N) to form the endosperm.
After fertilization, the ovule becomes:
After fertilization, the ovule develops into a seed.
The process of breaking seed dormancy is called:
The process of breaking seed dormancy is called germination, which allows the seed to grow into a new plant.
Which of the following is an asexual reproduction method in animals?
Fragmentation is a method of asexual reproduction in animals where an organism splits into fragments, each growing into a new individual.
What is the process of sperm formation called?
The process of sperm formation is called spermatogenesis, which occurs in the testes.
Which male gland contributes fluid to semen?
The prostate gland contributes fluid to semen, aiding in the nourishment and transport of sperm.
What is the role of gonads in reproduction?
Gonads are responsible for producing gametes (sperm and eggs), which are essential for sexual reproduction.
Which of the following is a sexually transmitted disease?
Syphilis is a sexually transmitted disease caused by the bacterium Treponema pallidum.
Which type of reproduction involves only one parent and no fusion of gametes?
Asexual reproduction involves only one parent and does not involve the fusion of gametes.
In asexual reproduction, offspring are:
In asexual reproduction, offspring are genetically identical to the parent because they are produced from a single parent without the fusion of gametes.
Which of the following is a method of asexual reproduction in bacteria?
Binary fission is a common method of asexual reproduction in bacteria, where a single cell divides into two identical daughter cells.
Binary fission typically occurs in:
Binary fission typically occurs in bacteria as a method of asexual reproduction.
Budding is a form of asexual reproduction found in:
Budding is a form of asexual reproduction commonly found in yeast.
Which structure in fungi and algae helps in asexual reproduction?
The sporangium is a structure in fungi and algae that helps in asexual reproduction by producing spores.
What allows spores to survive unfavorable conditions?
Spores can survive unfavorable conditions due to their thick resistant walls, which protect them from environmental stresses.
Vegetative propagation involves which parts of the plant?
Vegetative propagation involves the use of roots, stems, and leaves to produce new plants.
Which of these is NOT a natural method of vegetative propagation?
Grafting is not a natural method of vegetative propagation; it is an artificial method.
Bryophyllum reproduces asexually through:
Bryophyllum reproduces asexually through its leaves, which can produce new plantlets.
In artificial propagation, which of these methods is used?
Cutting is a method used in artificial propagation where a part of a plant is cut and planted to grow a new plant.
In grafting, the branch taken from the desired plant is called:
In grafting, the branch taken from the desired plant is called the scion.
What is tissue culture also known as?
Tissue culture is also known as cloning, as it involves growing cells or tissues in a controlled environment to produce identical organisms.
Apomixis is a type of:
Apomixis is a type of asexual reproduction where seeds are formed without fertilization.
In apomixis, seeds are produced:
In apomixis, seeds are produced without fertilization, making it a form of asexual reproduction.
Which group of plants reproduce through flowers?
Angiosperms are the group of plants that reproduce through flowers.
The male part of a flower is known as:
The male part of a flower is known as the stamen, which produces pollen.
The female gametophyte (embryo sac) in angiosperms has how many cells?
The female gametophyte, or embryo sac, in angiosperms typically has 7 cells.
Pollination is the process of transferring pollen grains from:
Pollination is the process of transferring pollen grains from the anther to the stigma of a flower.
Which type of pollination occurs within the same flower or plant?
Self pollination occurs within the same flower or plant, where pollen is transferred to the stigma of the same flower.
Cross pollination occurs between flowers of:
Cross pollination occurs between flowers of different plants of the same species.
In double fertilization, one male gamete fuses with ovum to form:
In double fertilization, one male gamete fuses with the ovum to form the zygote, which develops into the embryo.
Which of the following is the main function of endosperm?
The main function of the endosperm is to provide nourishment to the developing embryo in the seed.
Which part of the ovule becomes the seed coat?
The integument of the ovule becomes the seed coat, which protects the seed.
Formation of fruit without fertilization is called:
Parthenocarpy is the formation of fruit without fertilization, resulting in seedless fruits.
Which one of these is an example of seedless fruit due to parthenocarpy?
Banana is an example of a seedless fruit due to parthenocarpy, where the fruit forms without fertilization.
Which part of the seed protects the embryo?
The seed coat protects the embryo within the seed from physical damage and dehydration.
In dicot seeds, food is mainly stored in the:
In dicot seeds, food is mainly stored in the cotyledons, which provide nourishment to the developing seedling.
The point through which water enters the seed is called:
The micropyle is the point through which water enters the seed, facilitating germination.
What breaks seed dormancy to allow germination?
Water is essential for breaking seed dormancy, as it activates the metabolic processes necessary for germination.
In epigeal germination, the cotyledons:
In epigeal germination, the cotyledons come above the soil and often become photosynthetic.
Which germination type keeps cotyledons below the soil?
Hypogeal germination is characterized by cotyledons remaining below the soil surface.
Which of the following is a type of asexual reproduction in animals?
Fragmentation is a type of asexual reproduction in animals where an organism splits into fragments, each capable of growing into a new individual.
In binary fission, how many daughter organisms are produced?
In binary fission, two daughter organisms are produced from a single parent organism.
Which organism commonly reproduces by binary fission?
Protozoa commonly reproduce by binary fission, a method of asexual reproduction.
Which method of asexual reproduction is seen in Hydra?
Budding is a method of asexual reproduction seen in Hydra, where a new organism grows out of the body of the parent.
In which method do fragments grow into complete organisms?
Fragmentation is the method where fragments of an organism grow into complete organisms.
Plasmodium reproduces by which method?
Plasmodium reproduces by multiple fission, where the nucleus divides multiple times before the cell divides.
What is the result of the fusion of two gametes in sexual reproduction?
The fusion of two gametes in sexual reproduction results in the formation of a zygote.
What is the process of gamete formation in gonads called?
The process of gamete formation in gonads is called gametogenesis.
What type of cell division occurs during gametogenesis?
Meiosis is the type of cell division that occurs during gametogenesis, reducing the chromosome number by half to produce gametes.
Where does spermatogenesis occur in rabbits?
Spermatogenesis, the process of sperm formation, occurs in the testes of male rabbits.
What is the primary function of the ovaries in female rabbits?
The primary function of the ovaries in female rabbits is to produce ova (egg cells).
Which organ collects sperm from seminiferous tubules in male rabbits?
The epididymis is the organ that collects and stores sperm from the seminiferous tubules in male rabbits.
Which of the following is typically characterized by external fertilization?
External fertilization typically occurs in fishes and amphibians, where eggs are fertilized outside the body.
What are sexually transmitted diseases (STDs)?
Sexually transmitted diseases (STDs) are diseases transmitted through genital organs and fluids during sexual contact.
Which of the following is not a sexually transmitted disease?
Tuberculosis is not a sexually transmitted disease; it is primarily an airborne bacterial infection.
How can herpes also be transmitted, apart from sexual contact?
Herpes can also be transmitted through skin-to-skin contact, not just sexual contact.
What does AIDS stand for?
AIDS stands for Acquired Immuno Deficiency Syndrome, a chronic, potentially life-threatening condition caused by the HIV virus.
Which virus causes AIDS?
The virus that causes AIDS is the Human Immunodeficiency Virus (HIV).
Which of the following is not a way HIV can be transmitted?
HIV cannot be transmitted through casual contact such as shaking hands.