1. The correct answer is A. Semi-permeable membrane is not a factor that affects diffusion. Diffusion is the movement of particles from an area of high concentration to an area of low concentration. Factors like the size of molecules, temperature, and concentration gradient can influence the rate of diffusion, but the presence of a semi-permeable membrane does not directly impact this process.
2. The process whereby living organisms make or obtain their own food is called Nutrition. This involves the intake of nutrients necessary for growth, maintenance, and energy production. Excretion is the process of removing waste products, digestion is the breakdown of food into nutrients, and egestion is the elimination of indigestible materials.
3. The process whereby an organism feeds on dead organisms is called Saprophytism. Saprophytes are organisms that obtain nutrients by decomposing dead organic matter. Parasitism involves one organism living on or in another organism, and epiphytism refers to plants that grow on other plants for support.
4. The type of reproduction which involves the fusion/joining of male and female sex cells/gametes is called Sexual reproduction. Asexual reproduction does not involve the fusion of gametes and includes methods like binary fission and budding.
5. The permanent increase in size of an organism is called Growth. Growth involves the increase in the number and size of cells, resulting in an overall increase in body size. Movement refers to change in position or location, reproduction is the production of offspring, and normal increase is not a biological term related to growth.
6. The correct answer is C. Feelings is not an example of stimuli. Stimuli are external factors that can provoke a response in an organism's sensory receptors. Light, sound, and temperature are examples of stimuli that can trigger specific reactions or behaviors.
7. Any feature which helps a living organism to live successfully in a particular environment is called Adaptation. Adaptations can be physical, behavioral, or physiological characteristics that enhance an organism's survival and reproduction in its habitat. Irritability is the ability to respond to stimuli, evolution is the process of change in populations over time, and natural selection is a mechanism of evolution.
8. The average body temperature of a human being is 37°C. This temperature is considered the normal range for maintaining bodily functions and metabolic processes. Options A, B, and C are not within the typical average body temperature range for humans.
