Option D
polymerase chain reaction (PCR) do Makes more copies of a sample of DNA
<u>Explanation:</u>
A procedure to create several portraits of a distinct DNA section is termed as Polymerase chain reaction. In other words, it is a lab routine handled to compose various representations of a portion of DNA. PCR is extremely explicit and can be utilized to increase, or model, a particular DNA destination from a hybrid of DNA particles.
In PCR, the effect is regularly cycled within a range of temperature variations, which deduct countless models of the destination range to be exhibited. PCR intends to obtain sufficient of the objective DNA region that it can be examined or applied in some other way.
<h2>Answer:</h2>
The living cell concentration is hypertonic than outer solution hence the concentration of solutes will be higher than the solvent.
<h3>Explanation:</h3>
- In the question description it is mentioned that cell is present in the hypotonic solution than cell environment will be hypertonic.
- In the cell the solute will present in the concentrated form.
- Hence the water will move from the outer environment into sell through the osmosis.
- Osmosis is the movement of water from higher concentration to low concentration through semi permeable membrane.
- Hence the cell will swell due to water collection in cell.
Gravitropism
Phototropism
Thigmotropism
Answer: Estivation
Explanation:
Non-mammalian animals that cannot maintain their body temperature by its own. They need to adapt certain phenomenon to survive in the existing conditions.
The animals in the desert like snakes, reptiles, North American tortoise, also maintain their body temperature and maintain an adequate amount of water inside the body.
The animals in the desert do not move out during the daytime in order to conserve water and energy.
This phenomenon is season and is known as estivation.
