The advantage is that the animals with bilateral symmetry can find food and mates and also avoid predators because they have sensory organs and good muscle control. An example of such animals would be human beings. Additionally, bilaterally symmetric animals have sensory organs focused at the head which interacts with the environment before the rest of the body does, which allows quick reaction and ability to be motile.
Answer:
A low secretion of luteinizing hormone(LH) in the normal male adult would cause B. decreased testosterone secretion.
Explanation:
For males the normal range is 1.24 -7.8 IU/L. If LH levels are below the normal range it may indicate a pituitary gland problem. Their pituitary gland may not be making enough LH which may lead to low testosterone.
Hypogonadism is a testicular disorder associated with low testosterone. Low testosterone levels can cause a variety of problems including diminished muscle mass & decreased sex drive as well as decrease in the physical as well as mental energy.
Answer: Lymphatic capillaries are dead-end tubes.
Explanation: Lymphatic capillaries are closed tubes with flap-like valves that open to take in tissue fluid. Blood capillaries are part of a continuous system of blood vessels; arterioles supply blood to the capillary bed, and venules drain them.
Resistant insects would reproduce and pass on the tolerance making the pesticide obsolete.<span />