<h3>Explanation:</h3>
Mitosis actually happens in four phases. The first phase of mitosis through which chromatin condenses into chromosomes, the nuclear case breaks down, centrioles divide, and a spindle begins to form. Microtubule fibres that enable the division of sister chromatids during mitosis and meiosis.
The Native Species. (i think)
Answer: a. action potential frequency is high enough that no relaxation of muscle fibers occurs.
Explanation:
A tetanic contraction occurs due to repeated stimuli at short intervals. In this situation, the muscle fiber does nor relax and contracts again. It is a process of sustained contraction of muscles, which evoke when the motor nerve innervates a skeletal muscle and emits the action potential at high rate. The muscles become hyperactive in this condition.
Answer: Dermal tissues help plants on a hot day because It has a waxy material that prevents the loss of water to the environment.
Explanation:
Dermal tissues is made-up of epidermal cells which are packed closely and secrete wax curticle which prevent water loss to the environment in the hot day. They deter excess water and entering of microorganisms and insects. It covers the plant and control gas exchange and water loss.
