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رد: studying biology with الهوجاس خاص لـ nurses
Reproduction
1- Sexual reproduction includes:
a- Meiosis
b- Gamete formation
c- Fertilization
d- All of the above #
2- All of the following are diploid cells except:
a- Oogonia
b- Muscle cells
c- Primary oocytes
d- Secondary oocytes #
3- By the end of ………, three germ layers are formed
a- Fertilization
b- Gastrulation #
c- Cleavage
d- Organogenesis
4- The process by which zygote is divided into smaller cells is called
a- Gastrulation
b- organogenesis
c- cleavage #
d- meiosis
5- The site in which sperms become mature is
a- seminal vesicle
b- testis
c- prostate gland
d- epididymis #
31- The …………….are sites [مكان] where sperms are produced:
a- seminiferous tubules #
b- fallopian tubes
c- vas deferens
d- epididymis
32- Sperms mature in the …………...
a- seminiferous tubules
b- fallopian tubes
c- vas deferens
d- epididymis #
33- A large part of semen is secreted by the …….
a- seminal vesicles #
b- testis
c- bulbourethral glands
d- epididymis
34- When the three germ layers are formed, the embryo is termed:
a- blastula
b- zygote
c- gastrula #
d- all of the above are correct
35- Which of the following is the correct sequence for embryonic development?
a- gastrula - zygote- blastula - organ formation
b- zygote – blastula – gastrula – organ formation #
c- blastula –zygote- gastrula - organ formation
d- zygote- blastula – organ formation - gastrula
36-Skin and nervous system are formed from:
a- endoderm
b- ectoderm #
c- mesoderm
d- non of the above
37- A………..is formed at the end of …………….
a- blastula – cleavage #
b- zygote – oogenesis
c- blastula – gastrulation
d- zygote – spermatogenesis
13. Which germ layer gives rise to the nervous system ?
a. endoderm.
b. ectoderm.
c. mesoderm.
d. none of the above.
14. A solid ball of cells produced at the end of the cleavage is called a:
a. gastrula.
b. morula.
c. blastula.
d. zygote.
15. Embryonic cells are arranged in three distinct ( متميزة ) germ layers during:
a. organogenesis.
b. cleavage.
c. gastrulation.
d. fertilization.
16. All of the following are haploid cells except:
a. first polar body.
b. second polar body.
c. secondary spermatocyte.
d. primary oocyte.
e.
77- T Cleavage is a series of mitotic divisions.
1- T* F Each polar body contains (n) number of chromosomes
3- T F* Embryo is normally implanted in the cervix of human female reproductive system
4- T F Oogonia divide mitotically to give primary oocytes
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