Biology Chapter on Reproduction and DNA

<p>To ensure that each daughter cell receives a complete set of genetic information. (A)</p> Signup and view all the answers

<p>It ensures the passing of genetic information across generations. (C)</p> Signup and view all the answers

<p>To provide the framework for carrying out life processes. (C)</p> Signup and view all the answers

<p>It would disrupt the proper functioning of the cell's internal structures. (C)</p> Signup and view all the answers

<p>Variations in the physical characteristics of the organism. (A)</p> Signup and view all the answers

<p>Formation of sperm (B)</p> Signup and view all the answers

<p>To add fluid for sperm transport and nutrition (A)</p> Signup and view all the answers

<p>It is expelled as blood and mucous (D)</p> Signup and view all the answers

<p>Oviduct (C)</p> Signup and view all the answers

<p>To transfer nutrients and waste between mother and embryo (C)</p> Signup and view all the answers

<p>Development of secondary sexual characteristics (B)</p> Signup and view all the answers

<p>Creation of a zygote (D)</p> Signup and view all the answers

<p>Facilitate fertilisation (C)</p> Signup and view all the answers

<p>Every month (C)</p> Signup and view all the answers

<p>Prevent sexually transmitted infections (A)</p> Signup and view all the answers

<p>Absence of a fertilised egg (D)</p> Signup and view all the answers

<p>2-8 days (C)</p> Signup and view all the answers

<p>It implants in the uterine lining (B)</p> Signup and view all the answers

<p>Pressure to have children (D)</p> Signup and view all the answers

<p>Prevent ovulation by altering hormonal balance (B)</p> Signup and view all the answers

<p>They are implanted in the uterus to prevent fertilisation (A)</p> Signup and view all the answers

<p>Vasectomy (B)</p> Signup and view all the answers

<p>Hormonal side effects (D)</p> Signup and view all the answers

<p>The egg cannot reach the uterus (C)</p> Signup and view all the answers

<p>Hydra (A)</p> Signup and view all the answers

<p>It is a faster and more efficient way to produce plants. (D)</p> Signup and view all the answers

<p>Female foeticides (A)</p> Signup and view all the answers

<p>Genetic variations among offspring (D)</p> Signup and view all the answers

<p>Spore Formation (A)</p> Signup and view all the answers

<p>Provide nutrients to sperm (C)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>It does not involve the fusion of gametes. (C)</p> Signup and view all the answers

<p>Transfer of pollen to the stigma (A)</p> Signup and view all the answers

<p>Greater difficulty in improving everyone's standard of living (D)</p> Signup and view all the answers

<p>A new individual develops from a specialized cell called a bud. (C)</p> Signup and view all the answers

<p>To eliminate female fetuses based on gender preference (A)</p> Signup and view all the answers

<p>It is the initial step in the development of new plants from individual cells or tissues. (A)</p> Signup and view all the answers

<p>It can occur through mechanisms like fission and budding (D)</p> Signup and view all the answers

<p>It allows for the production of a large number of offspring in a short period of time. (A)</p> Signup and view all the answers

<p>Both B and C (A)</p> Signup and view all the answers

<p>Unfertilised eggs and hormonal changes (C)</p> Signup and view all the answers

<p>Stem Cell (B)</p> Signup and view all the answers

<p>They have specialized cells called buds. (C)</p> Signup and view all the answers

<p>They produce spores that are resistant to harsh environments. (D)</p> Signup and view all the answers

<p>Hydra (C)</p> Signup and view all the answers

<p>It always produces genetically identical offspring. (C)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>It allows for the production of genetically diverse offspring. (D)</p> Signup and view all the answers

<p>To transport the sperm from the pollen grain to the ovule (B)</p> Signup and view all the answers

<p>Plants are not capable of internal fertilization, while humans are. (A)</p> Signup and view all the answers

<p>It protects the developing embryo from environmental factors (C)</p> Signup and view all the answers

<p>Increased height (A)</p> Signup and view all the answers

<p>Because the body needs to focus resources on achieving adult size before specializing in reproduction (B)</p> Signup and view all the answers

<p>To signal sexual maturity to potential mates (B)</p> Signup and view all the answers

<p>To deposit sperm into the female reproductive system (B)</p> Signup and view all the answers

<p>Photosynthesis (B)</p> Signup and view all the answers

<p>It allows plants to continue their life cycle and reproduce (C)</p> Signup and view all the answers

<p>Pollination, Fertilization, Germination, Seed Development (A)</p> Signup and view all the answers

<p>To ensure that the seeds are properly hydrated (D)</p> Signup and view all the answers

<p>Wind (A)</p> Signup and view all the answers

<p>Ovule (A)</p> Signup and view all the answers

<p>To disperse the seeds (C)</p> Signup and view all the answers

<p>It allows individuals to reproduce and create offspring (B)</p> Signup and view all the answers

<p>DNA copying is a chemical reaction which is inherently prone to some level of variation. (B)</p> Signup and view all the answers

<p>It allows for the preservation of the species' genetic code across generations. (C)</p> Signup and view all the answers

<p>It increases the genetic diversity within a species, making it more adaptable to environmental changes. (B)</p> Signup and view all the answers

<p>The cell will simply die. (C)</p> Signup and view all the answers

<p>They contribute to the overall diversity of the species, enhancing its ability to adapt. (D)</p> Signup and view all the answers

<p>It conserves half of the original DNA molecule in each new copy. (A)</p> Signup and view all the answers

<p>Introduction of a new predator species into an ecosystem. (D)</p> Signup and view all the answers

<p>A single-celled organism splitting into two identical daughter cells. (B)</p> Signup and view all the answers

<p>The specific role and position of a species in an ecosystem. (D)</p> Signup and view all the answers

<p>It provides a basis for natural selection to act upon, leading to the evolution of new traits. (A)</p> Signup and view all the answers

<p>A process in which a single-celled organism divides into two identical daughter cells. (B)</p> Signup and view all the answers

<p>Binary fission produces two daughter cells, while multiple fission produces many daughter cells. (A)</p> Signup and view all the answers

<p>Spirogyra splitting into smaller pieces that develop into new individuals. (C)</p> Signup and view all the answers

<p>Budding (C)</p> Signup and view all the answers

<p>It suggests that Spirogyra are multicellular organisms with specialized structures. (A)</p> Signup and view all the answers

<p>They are more complex organisms with specialized cells and tissues. (C)</p> Signup and view all the answers

<p>It introduces genetic diversity into offspring, increasing the chances of adaptation to changing conditions. (A)</p> Signup and view all the answers

<p>Sexual reproduction results in the duplication of DNA in each generation, potentially overwhelming the cell's control mechanisms. (C)</p> Signup and view all the answers

<p>Variations arise due to random mutations that occur during DNA replication. (D)</p> Signup and view all the answers

<p>Meiosis reduces the number of chromosomes in germ cells by half, preventing the doubling of DNA in the offspring. (C)</p> Signup and view all the answers

<p>Variations increase the likelihood that some individuals will possess traits advantageous for adaptation to changing environments. (B)</p> Signup and view all the answers

<p>It enables the combination of genetic material during fertilization, leading to genetic diversity. (C)</p> Signup and view all the answers

<p>Asexual reproduction produces offspring with identical genetic makeup, reducing the ability to adapt to environmental changes. (C)</p> Signup and view all the answers

<p>The pollen grain contains the male gamete that fertilizes the egg cell in the ovule. (B)</p> Signup and view all the answers

<p>DNA copying provides the blueprint for the development and functioning of the new organism. (B)</p> Signup and view all the answers

<p>Petals attract pollinators, while sepals protect the flower bud during development. (B)</p> Signup and view all the answers

<p>Self-pollination produces seeds with the same genetic makeup as the parent plant, while cross-pollination introduces variations. (D)</p> Signup and view all the answers

<p>It results in the formation of a seed, which contains the embryo and food reserves. (B)</p> Signup and view all the answers

<p>It allows for the rapid production of offspring with identical genetic makeup, preserving desirable traits. (D)</p> Signup and view all the answers

<p>Regeneration in complex organisms is limited to repairing damaged tissue, not creating new individuals. (C)</p> Signup and view all the answers

<p>Variations increase the likelihood that some individuals will possess traits advantageous for adaptation to changing environments. (D)</p> Signup and view all the answers

<p>A tube grows out of the pollen grain, traveling through the style to reach the ovary. (C)</p> Signup and view all the answers

<p>To facilitate the internal transfer of germ cells from one individual to another. (D)</p> Signup and view all the answers

<p>The changes involve the development of new organs and specialized tissues for sexual maturation. (D)</p> Signup and view all the answers

<p>The changes happen gradually over time and vary in their onset and progression. (C)</p> Signup and view all the answers

<p>The changes allow individuals to recognize and mate with other members of the same species. (A)</p> Signup and view all the answers

<p>Seeds provide a means of dispersing the plant's offspring to new locations. (D)</p> Signup and view all the answers

<p>The ovary provides support and protection for the developing seed. (A)</p> Signup and view all the answers

<p>An increase in the rate of overall body growth. (A)</p> Signup and view all the answers

<p>Regeneration only occurs when the organism is injured, while reproduction occurs naturally for the continuation of the species. (A)</p> Signup and view all the answers

<p>It helps to increase the resistance of plants to diseases and pests. (A), It enables the cultivation of plants that have lost the ability to produce seeds. (B), It allows for the rapid propagation of plants that are genetically identical to the parent plant. (C)</p> Signup and view all the answers

<p>Spores are produced by specialized cells called sporangia, which are released from the parent organism and germinate into new individuals. (C), Spores are capable of surviving harsh environmental conditions for extended periods, facilitating dispersal and the establishment of new colonies. (D)</p> Signup and view all the answers

<p>Specialized cells are necessary for all forms of reproduction, whether it's sexual or asexual. (B)</p> Signup and view all the answers

<p>Regeneration involves the formation of a new individual from a piece of the parent organism, while budding occurs when an outgrowth develops on the parent organism. (C)</p> Signup and view all the answers

<p>Animal offspring must be genetically diverse for survival, while vegetative propagation produces genetically identical copies, making them susceptible to disease. (D)</p> Signup and view all the answers

<p>Regeneration only involves the replacement of lost or damaged tissues, while reproduction creates new individuals. (D)</p> Signup and view all the answers

<p>It allows for the rapid production of a large number of genetically identical plants, ensuring the preservation of desirable traits. (A)</p> Signup and view all the answers

<p>Specialized cells can differentiate into various cell types, allowing for the formation of tissues, organs, and the development of complete organisms. (C)</p> Signup and view all the answers

<p>Sexual reproduction allows for greater genetic diversity, increasing the chances that some offspring will survive in changing environmental conditions. (A)</p> Signup and view all the answers

<p>Meiosis creates haploid gametes, which have half the number of chromosomes, correcting the potential doubling of DNA that would occur if normal cell division were used in reproduction. (D)</p> Signup and view all the answers

<p>While DNA copying is usually accurate, errors can occur, resulting in variations in the offspring's DNA. These variations can be beneficial or harmful, leading to diversity in the population. (B)</p> Signup and view all the answers

<p>As organisms become more complex, the need for specific nutrients and energy stores in the developing offspring necessitates a specialized germ cell (egg) to provide these resources. (A)</p> Signup and view all the answers

<p>Cross-pollination allows for the exchange of genetic material between different plants, increasing the genetic variation among offspring. (D)</p> Signup and view all the answers

<p>Self-pollination involves the transfer of pollen from the anther of one flower to the stigma of the same flower, leading to fertilization by the same plant. (D)</p> Signup and view all the answers

<p>Asexual reproduction leads to a decrease in genetic diversity, making the population more susceptible to environmental changes and diseases. (A)</p> Signup and view all the answers

<p>Vegetative propagation produces plants that are genetically identical to the parent plant, allowing for the preservation of desirable traits. (A)</p> Signup and view all the answers

<p>Regeneration is a mechanism for repairing damaged tissues, not creating new individuals. Complex organisms use sexual reproduction to create offspring. (B)</p> Signup and view all the answers

<p>DNA copying ensures that the genetic information from the parent is passed on to the offspring, ensuring the continuity of life. (A)</p> Signup and view all the answers

<p>Pushing out one copy would disrupt the cellular structure and lead to an unstable, non-functional organism. (C)</p> Signup and view all the answers

<p>Variations are the result of changes in the blueprints themselves, leading to new features and traits. (B)</p> Signup and view all the answers

<p>A changed DNA information leads to the production of different proteins, which can potentially alter body design and function. (D)</p> Signup and view all the answers

<p>Reproduction requires a significant amount of energy, which could otherwise be used for activities like hunting or foraging. (D)</p> Signup and view all the answers

<p>Reproduction ensures the survival of the species by creating new individuals to replace those that die. (A)</p> Signup and view all the answers

<p>A single individual lacks the potential to create a noticeable population, making it less likely to be observed. (D)</p> Signup and view all the answers

<p>Because some variations might be beneficial and allow the organism to adapt to changing environmental conditions. (D)</p> Signup and view all the answers