NEET Zoology Human Reproduction Class 12 Questions

Incorrect statement w.r.t human reproduction is (1) Capacitation occurs in female reproductive tract. (2) Fertilization is feasible if both sperm and ovum are transported simultaneously to the ampullary region of fallopian tube. (3) Circulating levels of estrogen and progesterone in females regulates the changes in GnRH pulse frequency. (4) In females, meiosis-I completes at the time of birth.

If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from

In the given diagram, label the parts A, B, C, D, E.

Match the following and choose the correct options:

Select the characteristics required in flowers for wind pollination and choose the correct option.

Match the Column-I with Column-II and choose the correct option.

In spermatogenesis, reduction division of chromosomes occurs during conversion of

Assertion: The presence or absence of hymen is not a reliable indicator of virginity or sexual experience. Reason: It can also be broken by a sudden fall or jolt, insertion of a vaginal tampon, active participation in some sports like horseback riding, cycling, etc., or in some women the hymen persists even after coitus.

Select the incorrectly matched pair regarding placentation and the examples.

At the time of fertilization

The first movement of foetus and hairs on the head appears after

Endosperm is completely consumed by developing embryo in

The first movement of foetus can be observed during which month of pregnancy?

Read carefully and find out the correct statement from the given (a) Twin characteristics of reproduction are increase in mass and number of individual (b) A multicellular organism grows by cell division (c) Cell division occurs in all tissues to replace lost cells (d) Taxonomical groups are morphological aggregates

Vegetative reproduction in mosses takes place by fragmentation and budding in the

Assertion (A): Zygote is considered as the vital link.

Reason (R): Zygote ensures continuity of species between organisms of one generation and the next. In the light of above statements, choose the correct answer from the options given below.

The figure given below represents human foetus within the uterus. Identify A, B, C and D. Choose the correct option.

In which group of plants both male and female gametophytes do not have an independent free living existence?

Sertoli cells are found in

How many spermatids are produced by 120 secondary spermatocytes?

Read the following statements (A⁻E) and answer the question which follows them (A) In liverworts, mosses, and ferns gametophytes are free-living. (B) Gymnosperms and some ferns are heterosporous. (C) Sexual reproduction in Fucus, Volvox and Albugo is oogamous. (D) The sporophyte in liverworts is more elaborate than that in mosses. (E) Both, Pinus and Marchantia are dioecious. How many of the above statements are CORRECT?

Hormone releasing IUD among the following is

How many statements are true for reproduction in Periplaneta americana? (i) Anterior part of female genital pouch contains female gonopore, spermathecal pores and collateral glands. (ii) In males, genital pouch or chamber lies at the hind end of abdomen bounded dorsally by $9^{th}$ and $10^{th}$ terga and ventrally by the $9^{th}$ sternum. (iii) Males, genital pouch contains dorsal anus, ventral male genital pore and gonapophysis. (iv) Males bear a pair of short, thread like anal styles which are absent in females. (v) In both sexes, the $10^{th}$ segment bears a pair of jointed filamentous structures called anal cerci.

Innermost anther wall layer having dense cytoplasm, generally more than one nucleus and role in nourishment is

Find the incorrectly matched pair.

Read the following five statements (A - D) and answer as asked next to them. (A) In Equisetum the female gametophyte is retained on the parent sporophyte (B) In Ginkgo male gametophyte is not independent (C) The sporophyte in Riccia is more developed than that in Polytrichum (D) Sexual reproduction in volvox is isogamous

Given below are assertion and reason mark the correct choice from given options. Assertion: The oviducts, uterus and vagina are female accessory ducts. Reason: The mammary glands are one of the female secondary sexual characteristics.

What is the name of the structure that forms around the secondary oocyte after it differentiates from the tertiary follicle?

What is the function of fimbriae in the female reproductive system?

What is the main function of the acrosome in a sperm cell?

What is the function of the fimbriae in the female reproductive system?

What is the primary function of the alveoli in the mammary glands?

What is the phase of the menstrual cycle during which menstruation occurs?

The process of release of ovum from a mature follicle is called _____________.

What is the function of the trophoblast layer in the blastocyst during pregnancy?

What is the function of Sertoli cells in the male reproductive system?

What is the role of the corpus luteum during the menstrual cycle?

What is the primary function of Sertoli cells in the male reproductive system?

What is the primary hormone secreted by the corpus luteum during the luteal phase of the menstrual cycle?

What structure surrounds the secondary oocyte during its maturation in the ovary?

What is the primary function of Leydig cells in the male reproductive system?

Which of the following statements about human reproductive events is correct?

Which combination of statements about human reproduction is correct?

Which of the following combinations are correct regarding the menstrual cycle and ovum development?

Which of the following statements about the female reproductive system and its components are correct?

Which of the following combinations correctly describe aspects of the male reproductive system?

Which of the following combinations accurately describes the events following fertilization in human reproduction?

Which of the following statements about the male and female reproductive systems is correct?

Which of the following statements about the menstrual cycle are correct?

Which of the following combinations correctly describe the roles of hormones during the menstrual cycle?