Answer:
D)nuts and tough fruits
Explanation:
Bird beaks are developed to perform their functions, they are true tools that help birds survive in their habitat.
This type of beak is seen from birds called granivores. This short beak is strong and skilled, the granivore beak has the strength to break down hard seeds, nuts and hard fruits. In addition, this type of beak has the delicacy to separate the discarded bark from the nutritious part that feeds the bird.
embryonic stem cells could serve as a model to evaluate the physiological effects of environmental pollutants efficiently and cost-effectively.
Radial symmetry
Bilateral symmetry
Asymmetry
Answer:B
Explanation:
The Answer is radial symmetry
Repolarization
Reaching the threshold
Depolarization
Answer:
Option B - Repolarization
Explanation:
The change in the membrane potential to a negative value just after action potential is known as repolarization phase.
In cell, the depolarization event allows sodium channel to open. The cell after a short period of time allows the event of repolarization. The repolarizationevent occurs due to outflow of K+ ions. Thus, a damaged neuron will prevent the repolarization event.
G1 phase - period of growth and activity. Also, the time where the cell performs its function (ex. liver cells producing insulin)
S phase- synthesis - stage where DNA replication occurs
G2 phase - continued growth, building of spindle fibres and centrioles, both structures needed for Mitosis phase.