Question

Write the function of placenta in human females.

ii. List four ways of preventing pregnancy. State two

advantages of using such preventive methods.​

Answer 1

Answer:

Placenta provides nutrition to the developing zygote.

through placentian tubes it takes respiration, excretion,nutrution and all life processes.

Ways for preventing pregnant ===

1. Vasectomy (for males)
2. tubectomy (for females)
3. Using contraceptives
4. chemical METhods

3.contraceptives are the barrier Mathods like copper t etc which prevents fusion of the gametes

4. taking chemical pills can prevent formation of ovule which can have side effects and even infertility.

hope it helps

mark brainliest

Answer 2

Placenta serves as nutritive, respiratory and excretory organ of the foetus.

Four ways of preventing pregnancy-

1) Mechanical barriers+ using condoms in males

2) Chemical methods - using oral pills

3) IUCD's- using copper-t

4) Surgical method

Advantages of using such methods-

1) Less number of sexually transmitted diseases.

2) more family planning