A leech is an example of a parasite
Answer:
These are Cowpers's gland.(Bulbo Urethral Gland)
Explanation:
These are small pea-sized glands at the base of the penis which connect each with the urethra through a short duct. It is thorough this ducts that secretion from each gland gets to the urethra.
They secretes thick alkaline fluids for lubrication of urethral and tip of the penis, for expulsion of left over urine, dead cells, mucous from the urethra for clean sperm passage.
The serrations also neutralise the acidity of the urethral
Answer:
There are 4 condition:
1. Heredity
2. Reproduction
3,. Fitness or organism
4. Variation in individual characters among population
For factors of effects- all of these