Menstruation occurs
Weekly
Fortnightly
Once is 30-38 days
Once in 28-30 days
Match the following.
1. Pouched mammals - A- Whale & Bear2. Placental mammals - B- Echidna and platypus3. Egg laying mammals - C- Tasmanian wolf and Kangaroo
Which is not true for a human sperm
Motile gamete
Micro gamete
Live for 2-3 days inside the female body cavity
Stores its own food
