MEDIUM

Earn 100

Identify the correctly matched pair/pairs of the germ layers and their derivatives.
A. Ectoderm - Epidermis
B. Endoderm - Dermis
C. Mesoderm - Muscles
D. Mesoderm - Notochord
E. Endoderm - Enamel of teeth

40% studentsanswered this correctly

Important Questions on Human Reproduction

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

The embryo with 8 to 16 blastomeres is called a:

HARD

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

After which month of the embryo development in humans, the growth of the placenta slows down?

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Distinguish between the blastula and gastrula by giving two points.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Explain "Gastrulation".

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Write the differences between blastula and morula.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What is embryogenesis? Mention two important events that occur during embryogenesis.

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What is implantation?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Given below are statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Endometrium is necessary for implantation of blastocyst.

Reason R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.

In the light of the above statements, choose the correct answer from the options given below:

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Explain the term Implantation.

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What is called differentiation?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What will be effect on embryonic development if placenta does not formed after implantation. Explain.

HARD

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

From an early amphibian embryo the cells that would give rise to skin in adults were transplanted into the developing brain region of another embryo. The transplanted cells developed into brain tissue in the recipient embryo. What do you infer from this experiment?

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Explain "Implantation".

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Human embryo is protected by which cavity?

MEDIUM

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

What is quickening? In the human embryonic stage, which organs are formed during the third to sixth week of gestation?

EASY

Biology>Reproduction>Human Reproduction>Pregnancy and Placenta Formation in Humans

Several hormones like hCG, hPL, estrogen, progesterone are produced by