Reproduction PYQs

What are the potential drawbacks in adoption of the IVF method? A. High fatality risk to mother B. Expensive instruments and reagents C. Husband/wife necessary for being donors D. Less adoption of orphans E. Not available in India F. Possibility that the early embryo does not survive Choose the correct answer from the options given below:

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both wind and water pollinated flowers are not very colourful and do not produce nectar. Reason (R) : The flowers produce enormous amount of pollen grains in wind and water pollinated flowers. In the light of the above statements, choose the correct answer from the options given below :

Find the correct statements : A. In human pregnancy, the major organ systems are formed at the end of 12 weeks. B. In human pregnancy the major organ systems are formed at the end of 8 weeks. C. In human pregnancy heart is formed after the end of gestation. D. In human pregnancy, limbs and digits develop by the end of second month. E. In human pregnancy the appearance of hair is usually observed in the fifth month. Choose the correct answer from the options given below :

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled. Reason (R) : The egg apparatus has 2 polar nuclei. In the light of the above statements, choose the correct answer from the options given below :

Consider the following : A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis. B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females. C. The first polar body is associated with the formation of the primary oocyte. D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding. Choose the correct answer from the options given below :

The first menstruation is called :

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus. Reason (R) : Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells. In light of the above statements, choose the most appropriate answer from the options given below :

How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

Which of the following is an example of a zygomorphic flower?

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to ovary from the given figures (a) and (b)

Identify the set of correct statements: A. The flowers of Vallisneria are colourful and produce nectar. B. The flowers of waterlily are not pollinated by water. C. In most of water-pollinated species, the pollen grains are protected from wetting. D. Pollen grains of some hydrophytes are long and ribbon like. E. In some hydrophytes, the pollen grains are carried passively inside water. Choose the correct answer from the options below:

Given below are two statements: Statement I : Chromosomes become gradually visible under light microscope during leptotene stage. Statement II : The beginning of diplotene stage is recognized by dissolution of synaptonemal complex. In the light of the above statements, choose the correct option from the options below:

Identify the part of the seed from the given figure which is destined to form root when the seed germinates.

Match List I with List II Choose the correct answer from the options given below:

Identify the correct description about the given figure:

Which of the following is not a component of Fallopian tube?

Which of the following is not a natural/traditional contraceptive method?

Given below are two statements : Statement I : The presence or absence of hymen is not a reliable indicator of virginity. Statement II : The hymen is torn during the first coitus only. In the light of the above statements, choose the correct answer from the options given below :

Match List I with List II : Choose the correct answer from the options given below :

In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :

Large, colourful, fragrant flowers with nectar are seen in :

What is the function of tassels in the corn cob?

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : A flower is defined as modified shoot wherein the shoot apical meristem changes to floral meristem. Reason R : Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents. Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. In the light of the above statements, choose the correct answer from the options given below :

Match List I with List II. Choose the correct answer from the options below:

Given below are two statements: Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct. Statement II: The cavity of the cervix is called cervical canal which along with vagina forms birth canal. In the light of the above statements, choose the correct answer from the options given below:

Which of the following statements are correct regarding female reproductive cycle? A. In non-primate mammals cyclical changes during reproduction are called oestrus cycle. B. First menstrual cycle begins at puberty and is called menopause. C. Lack of menstruation may be indicative of pregnancy. D. Cyclic menstruation extends between the menarche and menopause. Choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme. Reason R: Ban on amniocentesis checks increasing menace of female foeticide. In the light of the above statements, choose the correct answer from the options given below:

Identify the incorrect statement related to Pollination:

Given below are two statements: Statement I: Cleistogamous flowers are invariably autogamous. Statement II: Cleistogamy is disadvantageous as there is no chance for cross pollination. In the light of the above statements, choose the correct answer from the options given below:

Which part of the fruit, labelled in the given figure, makes it a false fruit?

Lippe's loop is a type of contraceptive used as:

At which stage of life is the oogenesis process initiated?

Which of the following statements are true for spermatogenesis but do not hold true for oogenesis? (a) It results in the formation of haploid gametes (b) Differentiation of gamete occurs after the completion of meiosis (c) Meiosis occurs continuously in a mitotically dividing stem cell population (d) It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary (e) It is initiated at puberty Choose the most appropriate answer from the options given below:

Given below are two statements: Statement I: The release of sperms into the seminiferous tubules is called spermiation. Statement II: Spermiogenesis is the process of formation of sperms from spermatogonia. In the light of the above statements, choose the most appropriate answer from the options given below:

Match List-I with List-II with respect to methods of contraception and their respective actions. Choose the correct answer from the options given below

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is:

A typical angiosperm embryo sac at maturity is:

Receptors for sperm binding in mammals are present on:

Venereal diseases can spread through:(a) Using sterile needles (b) Transfusion of blood from infected person (c) Infected mother to foetus (d) Kissing (e) Inheritance Choose the correct answer.

Match List-I with List-II. Choose the correct answer from the options given below.

Which one of the following is an example of Hormone releasing IUD?

Which of these is not an important component of initiation of parturition in humans?

Which of the following is not a step in Multiple Ovulation Embryo Transfer Technology (MOET)?

Which of the following secretes the hormone relaxin, during the later phase of pregnancy?

The plant parts which consist of two generations - one within the other are (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovuleThe plant parts which consist of two generations - one within the other are (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule

Meiotic division of the secondary oocyte is completed: (a) In Ur

In water hyacinth and water lily, pollination takes place by:

Match the following columns and select the correct option.

The body of the ovule is fused within the funicle at

Which is the most common type of embryo sac in angiosperms?

What type of pollination takes place in Vallisneria?

In which one of the following, both autogamy and geitonogamy are prevented?

Select the incorrect statement regarding inbreeding.

Select the correct sequence of events.

Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex?

No new follicles develop in the luteal phase of the menstrual cycle because:

Which of the following is a correct statement?

Which of the following sexually transmitted diseases do not specifically affect reproductive organs?

Select the correct route for the passage of sperms in male frogs:

Match the following sexually transmitted diseases (Column-I) with their causative agent (Column-II) and select the correct option.

Double fertilization is exhibited by

Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by

Attractants and rewards are required for

In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?

Functional megaspore in an angiosperm develops into

A dioecious flowering plant prevents both:

Capacitation occurs in

The function of copper ions in copper releasing IUD's is

Which one of the following statements is not correct?

Which one of the following generates new genetic combinations leading to variation?

Match Column-I with Column-II and select the correct option using the codes given below.

In majority of angiosperms

Pollination in water hyacinth and water lily is brought about by the agency of

The ovule of an angiosperm is technically equivalent to

Which of the following is hormone releasing IUD?

Which of the following is incorrect regarding vasectomy?

Embryo with more than 16 blastomeres formed due to in-vitro fertilization is transferred into

Which of the following depicts the correct pathway of transport of sperms?

Match Column-I with Column-II and select the correct option using the codes given below:

Several hormones like hCG, hPL, estrogen, progesterone are produced by

Ectopic pregnancies are referred to as:

Male gametophyte in angiosperms produces:

Coconut water from a tender coconut is:

Metagenesis refers to:

Filiform apparatus is characteristic feature of:

Which of the following events is not associated with ovulation in human female?

A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is:

In human females, meiosis-II is not completed until:

Which of the following layers in an antral follicle is acellular?

Which one of the following fruits is parthenocarpic?

In angiosperms, microsporogenesis and megasporogenesis:

Flowers are unisexual in:

Which of the following pairs is not correctly matched?

Geitonogamy involves:

Male gametophyte with least number of cells is present in:

An aggregate fruit is one which develops from:

Function of filiform apparatus is to:

Assisted reproductive technology, IVF involves transfer of:

Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of :

In human female the blastocyst :

In which one of the following male and female gametophytes do not have free living independent existence?

Endosperm is consumed by the developing embryo in the seed of

Given below are four methods (A-D) and their modes of action (a-d) in achieving contraception. Select their correct matching from the four options that follow.

In humans, at the end of the first meiotic division, the male germ cells differentiate into

Which one of the following is resistant to enzyme action?

Which one of the following pairs of plant structures has haploid number of chromosomes?

What does the filiform apparatus do at the entrance into ovule?

Unisexuality of flowers prevents

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

Consider the statements given below regarding contraception and answer as directed thereafter: (a) Medical Termination of Pregnancy (MTP) during first trimester is generally safe (b) Generally chances of conception are nil until mother breast-feeds the infant up to two years (c) Intrauterine devices like Copper-T are effective contraceptives (d) Contraception pills may be taken up to one week after coitus to prevent conception Which two of the above statements are correct?

Grey crescent is the area:

In which one pair both the plants can be vegetatively propagated by leaf pieces?

Which of the following represents the edible part of the fruit of litchi?

In a type of apomixis known as adventive embryony, embryos develop directly from the:

Through which cell of the embryo sac does the pollen tube enter the embryo sac?

Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other?

If mammalian ovum fails to get fertilized, which one of the following is unlikely?

Why is vivipary an undesirable character for annual crop plants?