NEET WEEKLY TEST BIOLOGY (23.08.2025)

IMPORTANT INSTRUCTIONS

1. The test is of 90 minutes duration and Test Booklet contains 90 questions. Each question carried 4 marks for each correct response, the candidate will get 4 marks. For each incorrect response, one mark will be deducted from the total scores.
2. Use of Cell phone/Electronics gadgets/Calculator etc. are not allowed.

BIOLOGY

1. The hormone responsible for the release of ovum from the mature follicle is:

2. Assertion (A): LH surge induces ovulation.
    Reason (R): LH induces rupture of Graafian follicle.

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true, but R is false.
4. A is false, but R is true.Deselect Answer

3. Which of the following layers in a graafian follicle is acellular?

1. Zona pellucida
2. Theca interna
3. Granulosa
4. Theca externaDeselect Answer

4. Which of the following is not a function of placenta?

1. Secretion of oxytocin during parturition
2. Supply of oxygen and nutrients to embryo
3. Removal of CO₂ and excretory waste materials from embryo
4. Production of hormones like hCG, hPL, estrogens, and progesteroneDeselect Answer

5. The correct sequence of the various phases in menstrual cycle is:

1. Menstrual – Follicular – Secretory – Ovulatory
2. Ovulatory – Follicular – Secretory – Menstrual
3. Menstrual – Follicular – Ovulatory – Secretory
4. Menstrual – Secretory – Follicular – OvulatoryDeselect Answer

6. Follicular atresia is:

1. Formation of corpus luteum
2. Increase in number of follicles
3. Formation of graafian follicles
4. Degeneration of folliclesDeselect Answer

7. Select the correct match from the events of menstrual cycle:

1. Ovulation – LH and FSH attain peak level and a sharp fall in the secretion of progesterone
2. Proliferative phase – Rapid regeneration of myometrium and maturation of graafian follicles
3. Development of corpus luteum – Secretory phase and increased secretion of progesterone
4. Menstruation – Breakdown of myometrium and ovum not getting fertilizedDeselect Answer

8. A change in ovum after penetration of sperm is

1. Formation of first polar body
2. Formation of second polar body
3. First meiosis completes
4. Second meiosis startsDeselect Answer

9. How many X chromosomes are present in first polar body?

1. 0
2. 1
3. 2
4. 23Deselect Answer

10. Which of the following is responsible for formation of axial filament in sperms?

1. Ring centriole
2. Nebenkern
3. Distal centriole
4. Naked filamentDeselect Answer

11. The blastocyst in human females

1. Gets implanted in endometrium by trophoblast cells
2. Forms placenta before implantation
3. Gets implanted into uterus 3 days after ovulation
4. Gets nutrition from uterine endometrial secretion only after implantationDeselect Answer

12. 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
Considering the above statements, choose the correct answer from the options given below:

1. A is false but R is true
2. Both A and R are true and R is the correct explanation of A
3. Both A and R are true but R is not the correct explanation of A
4. A is true but R is falseDeselect Answer

13. Recognize the given figure and find the correct matching


1. A-cells of corona radiata, B-perivitelline space, C-zona pellucida
2. C-zona pellucida, A-cells of corona radiata, B-perivitelline space
3. B-cells of corona radiata, A-zona pellucida, C-perivitelline space
4. B-perivitelline space, C-zona pellucida, A-cells of corona radiataDeselect Answer

14. Which of the following is correctly matched in a normal menstrual cycle?

1. Endometrium regenerates – 5^th to 10^th days
2. Release of egg – 5^th day
3. Endometrium secretes nutrients for implantation – 11^th to 18^th days
4. Rise in progesterone level – 1^st to 15^th dayDeselect Answer

15. First resting phase in oogenesis occurs in

1. Prophase
2. Metaphase
3. Anaphase
4. TelophaseDeselect Answer

16. Assertion (A): Myometrium is important component of uterus
      Reason (R): Myometrium produces strong contractions during parturition

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not the correct explanation of A
3. A is true but R is false
4. A is false but R is trueDeselect Answer

17. In human adult females, oxytocin:

1. Is secreted by anterior pituitary.
2. Stimulates growth of mammary glands.
3. Relaxes the cervix during parturition
4. Causes strong uterine contractions during parturition.Deselect Answer

18. Which of the following undergoes the meiosis -I division?

1. Secondary spermatocytes
2. Primary spermatocytes
3. Spermatids
4. SpermatogoniaDeselect Answer