Gynaecomastia condition can develop due to

Describe the location and function of the Bulbourethral gland and Corpus luteum.

In mammals,the egg is microlecithal and alecithal because they are.....

Given below are two statements:
Statement $I:$ Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct.
Statement $II:$ The cavity of the cervix is called cervical canal which along with vagina forms birth canal.
In the light of the above statements,choose the correct answer from the options given below:

If the number of chromosomes in most body cells of a mammal is $40$,the cells in the seminiferous tubule will have

For what primary purpose is the call of the cuckoo heard during the rainy season?