Answer: three types of neuron are ;sensory,interneuron and motor neurons
Explanation:
The three types of neurons are
Motor neurons
Interneurons
Sensory neurons
Sensory neurons- it receives impulses and carry them from the sense organs to the spinal cord or brain
Interneurons-it connects sensory
Motor neurons-it interprets the impulse only in the brain and spinal cord
populations were prevented from interbreeding by geographic isolation
Answer: C. Clotting enzyme
Explanation:
Semen is the fluid that is discharged by the male reproductive organs. It is composed of sperms and viscous fluid to facilitate the flow of sperms to the female genital tract. It consists of fluids secreted from various glands. The seminal vesicles secrete about 70% of the semen. It consists of fructose. The prostrate gland secrete about 20% volume of the semen. The fluid consists of acid phosphatase, and proteolytic enzymes. The bulbourethral gland secretes about 5% of the total volume of semen. It consists of mucoproteins.
The clotting factors or enzymes are absent in semen as these are produced by the blood platelets at the site of injury.
Answer:
D.Polygenenic
Explanation:
A polygenic trait is a phenotype that is influenced by more than one gene. Examples are height or skin color.
Answer:
Male - Sperm Cell
Female-Egg Cell
The egg Cell made, matures and develop in the ovary
while sperm cells developed and made in the testicles.
