Answer:
It triggers seed germination by activating hormone.
Explanation:
Karrikins has a great effect on seed germination in the plants as well as the obligate parasitic weed plants because it trigger the germination of seed by signaling of hormone known as strigolactone which is responsible for the germination of see. Karrikins are the group of plant growth regulators which is present in the smoke of burning plant.
Answer:
b. brings the postsynaptic cell to the chloride equilibrium potential
Explanation:
Gamma-aminobutyric acid (GABA) is one of the most important neurotransmitters, chemicals that brain cells use to communicate with each other. In fact, it is the most frequent inhibitory neurotransmitter. Inhibiting neurotransmitters decrease the chances that a nerve impulse will be triggered.
The main function of GABA as an inhibitory neurotransmitter is to slow down brain activity. It is also involved in vision, sleep, muscle tone and motor control.
It is widely distributed both inside and outside the central nervous system. It is found in the intestines, stomach, bladder, lungs, liver, skin, spleen, muscles, kidneys, pancreas and reproductive organs.
In vertebrates, GABA leads the postsynaptic cell to the chloride equilibrium potential. Through it, chloride ions flow out of the cell to achieve equilibrium.
Answer:
46 chromosomes
Explanation:
There are 46 chromosomes in a typical human body cell. (23 pairs of chromosomes)
