Explanation:
Root hair cells
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Answer: Option E.
Explanation:
Antibiotics are defined as the medicines that helps to stop the infections caused by bacteria.
Inhibition of cell wall synthesis of bacteria is one of the mechanism used by antibiotics to stop the infection.
In the presence of antibiotic, When a bacterial cell starts replicating, the peptidoglycan layer becomes weaker and weaker, and the cell got bursts when it become difficult to withstand the internal osmotic pressure that results in inhibition of bacteria.
Hence the correct option is E.
Answer:
The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.
The correct answer is (a) driving.
The pressence of undesirable substances in air is called as air pollution. There are many human activities that contribute to air pollution. The biggest contributor is driving. The pollutants that comes out of the car are carbon dioxide, carbon monoxide. They also release hydrocarbon and nitrogen oxides which when combines in sunlight becomes ozone. Air pollutants emitted by cars and other automobiles increases the level of harmful gases which to severe health problems such as heart disease, asthma, irritation in eyes.
