12th biology chapter 3 objective questions in english

1. Graafian follice occur : 

(A) In humanithyroid

(B) In human female’s ovary

(C) In frog’s ovary

(D) In Rabbits testis

2. Progesterone hormone is formed by : 

(A) Corpus calosum

(B) Corpus uterai

(C) Corpus luteum

(D) Corpus albicans

3. What is fertilisation ? 

(A) Fusion of egg with male nucleus

(B) Fusion of egg with secondary nucleus

(C) Fusion of egg with synergid

(D) None of these.

4. Secondary sexual characters in females develop in response to hormone

(A) Relaxin 

(B) Progesterone

(C) Estrogen 

(D) Gonadotropin

5. The total number of eggs produced by a healthy human female during life time : 

(A) 4000 

(B) 400

(C) 40 

(D) 365

6. Sertoli cells are found in : 

(A) Testis 

(B) Uterus

(C) Ovary 

(D) Liver

7. First Menstrual cycle at the time of puberty is called : 

(A) Ovum

(B) Sperm

(C) Menses

(D) Menarche

8. Blood and circulatory systems originate from which germinal layer ? 

(A) Ectoderm 

(B) Mesoderm

(C) Endoderm 

(D) None of these

9. The vas deferens receives duct from the seminal vesicle and opens into urethra as :

(A) epididymis 

(B) ejaculatory duct

(C) efferent ductule

(D) ureter

10. Urethral meatus refers to the : 

(A) urinogenital duct

(B) opening of vas deferens into urethra

(C) external opening of the urinogenital duct 

(D) muscles surrounding the urinogenial duct

11. Morula is a developmental stage: 

(A) between the zygote and blastocyst

(B) between the blastocyst and gastrula

(C) after the implantation

(D) between implantation and parturition

12. The membranous cover of the ovum at ovulation is : 

(A) corona radiata 

(B) zona radiata 

(C) zona pellucida

(D) chorion

13. Process of fusion of haploid cells is 

(A) Cell cycle E

(B) Meiosis

(C) Mitosis 

(D) Syngamy

14. Which of the following technique is not included in IVF ? 

(A) Intracellular sperm insemination

(B) Intrauterine insemination

(C) Embryo transfer

(D) Intrauterine device

15. Semen is frozen in : 

(A) liquid nitrogen 

(B) refrigerator 

(C) ice 

(D) all of these

16. The sperm penetrates through zona pellucida with the help of: 

(A) Secretion from acrosome

(B) Hydrolytic enzymes

(C) Neck with centroids

(D) Both (A) and (B)

17. Middle piece of mammalian sperm contains :

(A) nucleus 

(B) vacuole

(C) mitochondria 

(D) centriole

18. The process of formation of gametes is called : 

(A) Gametogenesis

(B) Cytokinesis

(C) Sporogenesis 

(D) Meiocytes

19. Which one of the following is not a male accessory gland ? 

(A) Seminal vesicle

(B) Ampulla

(C) Prostate 

(D) Bulbourethral gland

20. Which among the following has 23 chromosomes ? 

(A) Spermatogonia 

(B) Zygote

(C) Secondary oocyte

(D) Oogonia

21. Which of the following hormones is not secreted by human placenta ?

(A) hCG 

(B) Estrogens

(C) Progesterone 

(D) LH

22. Male hormone is produced from : 

(A) Ovary

(B) Sperm 

(C) Testis 

(D) Kidney

23. Uterus. is related to : 

(A) Male Reproductive system

(B) Female Reproductive system

(C) Plant Reproductive system

(D) All of these

24. The anterior portion of sperm is covered by a cap like structure known as: 

(A) Acrosome 

(B) Mesosome

(C) Episome 

(D) Spherosome

25. Sertoli cells are found in : 

(A) Testis 

(B) Uterus

(C) Ovary 

(D) Liver

26.  Acrosome is a part of: 

(A) Head of human sperm

(B) Middle part of human sperm

(C) Primary oocyte 

(D) Blastocyst

27. What is the number of chromosomes present in human gametes? 

(A) 21 

(B) 23 

(C) 44 

(D) 46

28. Diploid is : 

(A) Ovum 

(B) Pollen 

(C) both ‘A’ and ‘B’

(D) Zygote