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This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
1. |
Heart is derived from ______ |
A. | Mesoderm |
B. | Endoderm |
C. | Ectoderm |
D. | Mesenchyme |
Answer» B. Endoderm | |
2. |
The cells within the inner cell mass that possess the ability to give rise to the entire organism are called _______ |
A. | placental cells |
B. | stem cells |
C. | mother cells |
D. | zygote |
Answer» C. mother cells | |
3. |
The ability of a cell to differentiate is called ______ |
A. | potential |
B. | potency |
C. | stemness |
D. | development |
Answer» C. stemness | |
4. |
What layer separates ectoderm from the endoderm in the developing fetus? |
A. | Mesenchyme |
B. | Mesendoderm |
C. | Mesoderm |
D. | Placenta |
Answer» D. Placenta | |
5. |
Implantation is followed by the differentiation of inner cell mass into outer _______ and inner ______ |
A. | ectoderm, endoderm |
B. | ectoderm, mesoderm |
C. | ectoderm, mesendoderm |
D. | mesoderm, endoderm |
Answer» B. ectoderm, mesoderm | |
6. |
Which of these is not an associated function of the increased maternal hormones estrogen, progesterone, prolactin, and cortisol? |
A. | Development of fetus |
B. | Metabolic changes in the mother |
C. | Maintenance of pregnancy |
D. | Lactation |
Answer» E. | |
7. |
Fetal movements can be observed during ____________ |
A. | first month of pregnancy |
B. | first trimester |
C. | second trimester |
D. | third trimester |
Answer» D. third trimester | |
8. |
External genital organs are developed during _________ |
A. | first month of pregnancy |
B. | first trimester |
C. | second trimester |
D. | third trimester |
Answer» C. second trimester | |
9. |
Which organ is the first to form in the developing human fetus, formed after just 1 month of pregnancy? |
A. | Heart |
B. | Brain |
C. | Kidney |
D. | Liver |
Answer» B. Brain | |