Q. No.
A batch of students are taught about fertilisation and implantation. They have to answer the following questions by referring to the diagram.
In the ‘a’ structure, the cells which are arranged like sun’s rays are a part of which layer?
(1) Zona pellucida
(2) Corona radiata
(3) Vitelline membrane
(4) Perivitelline space
A batch of students are taught about fertilisation and implantation. They have to answer the following questions by referring to the diagram.
As shown in the diagram, the egg fertilization occurs at B. Instead of implanting at H it gets implanted at D. Which type of pregnancy would this be?
(1) Ectopic pregnancy
(2) Intrauterine pregnancy
(3) Fimbrial pregnancy
(4) Cervical pregnancy
All of the following cells are diploid in human body, except
1. Primary spermatocyte
2. Primary oocyte
3. First polar body
4. Zygote
| 1. | Cleavage divisions in early embryonic stages are mitotic divisions. |
| 2. | Embryo with 4-8 cells is called as morula. |
| 3. | Implantation occurs at the stage of blastocyst. |
| 4. | Placenta acts as an endocrine tissue and produces some hormones. |
1. Spermatogonium
2. Primary spermatocyte
3. Secondary spermatocyte
4. Spermatid
1. Testis
2. Seminal vesicle
3. Prostate
4. Bulbo-urethral gland
1. Oestrogen
2. Progesterone
3. LH
4. FSH
| 1. | About 200 seminiferous tubules are present in testis lobule |
| 2. | Epididymis is located along the anterior surface of each testis |
| 3. | Vas deferens ascends to the abdomen and loops over the bladder |
| 4. | Ducts of seminal vesicles open at the urethral meatus |
| 1. | Secondary follicle | 2. | Tertiary follicle |
| 3. | Morula | 4. | Blastocyst |
The hormone, essential for maintaining pregnancy, secreted in large amounts by the corpus luteum is:
| 1. | Estrogen |
| 2. | Progesterone |
| 3. | LH |
| 4. | FSH |
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