<h2>Answer:
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Option A) Active transport.
<h2>Explanation:
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- Active transport - Movement of molecules or ions from a lower concentration to a region of higher concentration(against a concentration gradient), by the use of enzymes and consuming energy(ATP), hence the substances move across plasma membrane against a concentration gradient.
- Osmosis is the process in which molecules of the solvent passes through a semipermeable membrane(plasma membrane in case of cell) from a less concentrated solution to more concentrated one along the concentrated gradient.
Energy is not required in this process and hence it is passive process.
- Diffusion is the movement of the molecules of a material from higher concentration to lower concentration.
- Facilitated diffusion is similar to diffusion, it the transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by the help of a carrier molecule.
Result: Active transport happens against a concentration gradient.
Answer: Option C
Explanation:
Amphibians are the animals that live on land and spend some part of their life cycle. These organism live on land and partially live inside water during the time of reproduction.
Amphibians lay eggs in water as their eggs are not hard shelled eggs. The females lay eggs in water known as larvae.
They are also known as tade pole that live in water and respire through gills but as they grow old they develop lungs to respire on land.
Hence, the correct answer is Option C
Lactase helps digest lactose which is a sugar found in milk and other dairy products.
Answer:
Poultry farming is the form of animal husbandry which raises domesticated birds such as chickens, ducks, turkeys and geese to produce meat or eggs for food. It has originated from the agricultural era. Poultry – mostly chickens – are farmed in great numbers.