HUMAN REPRODUCTION

• A

• B

• C

• D

Sexual reproduction is vital to the propagation of the Human race. Which of the following sequences represents the correct order of events in the formation of a human fetus?

• Zygote → Blastocyst → Embryo → Fertilization

• Fertilization → Zygote → Blastocyst → Embryo

• Blastocyst → Embryo → Differentiation → Zygote

• Fertilization → Growth → Differentiation → Zygote

The main function of the placenta is to :

• allow direct exchange of blood between the mother and fetus for nutrition.

• facilitate gas and nutrient exchange between the fetus and mother.

• support the weight of the developing fetus in the uterus.

• store gases and nutrients for later delivery to the fetus.

The diagram below represents some stages of early embryonic development. Which process is represented by the arrows in the diagram?

• meiosis

• Mitosis

• Fertilization

• Evolution

The diagram shows the 28 days of the menstrual cycle. When does the lining of the uterus break down?

• A
• B
• C
• D

The diagram shows a fetus developing in a uterus. Which structures remove excretory products from the fetus?

• P and Q
• Q and R
• R and S
• S and P

FERTILIZED ZYGOTE IS IMPLANTED IN THE ENDOMETRIUM AS

• MORULLA

• BLASTOCYST

• GASTRULLA

• BLASTOMERE

Name the hormone A and B mentioned in the diagram showing Menstrual Cycle.

• LH, FSH

• Estrogen,Progesterone

• LH,Estrogen

• FSH, Progesterone

IDENTIFY THE PICTURE

• T.S OF OVARY

• T.S OF TESTIS

• T.S OF UTERUS

• SECTIONAL VIEW OF SEMINIFEROUS TUBULES

Sperm A and B touch which part of the ovum respectively?

• Corona Radiata ,Zona Pellucida

• Zona Pellucida,Corona Radiata

• Perivitelline membrane, Nucleus

• None of these