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Recent questions and answers in Reproduction

Questions >> JEEMAIN and NEET >> Biology >> Reproduction

The second maturation division of the mammalian ovum occurs

answered Mar 30, 2019 by sunitasingh8239281320

1 answer

1. The *** is the male external genitalia 2. It is made up of special tissue that helps in erection of the * 3. Erection of the *** facilitates insemination. Regarding 1,2 and 3 :

answered Jan 11, 2018 by sozonovavalya

2 answers

Identify the procedure showm in the picture:

answered Jan 9, 2017 by suganyadevi.p

1 answer

Identify the structures marked as A, B, C, D in order in the picture; Identify E :

answered Nov 23, 2016 by suganyadevi.p

1 answer

Identify A, B, C and specify what are they? Identify the structures marked as D, E in order in the picture :

answered Nov 23, 2016 by suganyadevi.p

1 answer

To which stages A, B corresponds ? When is B completed? What are the values of x, y, z ?

answered Nov 23, 2016 by suganyadevi.p

1 answer

Identify A, B, C, D, E and F in order in the picture - choose the appropriate option :

answered Nov 23, 2016 by suganyadevi.p

1 answer

Identify the procedure showm in the picture:

answered Nov 21, 2016 by suganyadevi.p

1 answer

Which of the following is incorrect? (1) Human embryos have two pairs of ducts to let gametes out of the body, (2) Wolffian ducts develops in males into the epididymis and vas deferens, (3) Müllerian ducts develops in females into the Fallopian tubes, uterus and ******

answered Nov 21, 2016 by suganyadevi.p

1 answer

To which stages A, B, C, D corresponds ? What are the values of x, y, z (choose the appropriate option)?

answered Nov 8, 2016 by suganyadevi.p

1 answer

Identify the structures marked as A, B, C, D, E in order in the picture :

answered Nov 3, 2016 by suganyadevi.p

1 answer

Identify the wrongly matched pair:

answered Nov 3, 2016 by suganyadevi.p

1 answer

Identify A, B, C and D in order in the picture - choose the appropriate option :

answered Nov 3, 2016 by suganyadevi.p

1 answer

Identify A, B, C and D in order in the picture and identify the type of fruit shown - choose the appropriate option :

answered Nov 1, 2016 by suganyadevi.p

1 answer

Regarding Types of pollination : Match the following and choose the most appropriate option: (each option on 3 columns can be matched to multiple options on the another 2 columns) eg. A-(iv)-3,5; B-(i); C-(iii)-2; D-(ii),(vi),(vii)-1; (iii),(v)-6;

answered Mar 31, 2016 by thakurnavdeep2

1 answer

change in hormonal levels during ovulation.

answered Sep 16, 2015 by yadavpooja0609

1 answer

I want to know what the relation between the two events i,e withdrawing pseudopodia and secreting a three layered thick covering?

asked Sep 4, 2015 by shaikhzoya176

0 answers

random distribution of 23 pairs of chromosomes during miosis could be

asked Jan 31, 2015 by aradhya.dutta200

0 answers

Regarding the figure : 1. It shows asexual reproduction in sponge 2. Reproductive structures are gemmules. 3. The most common of asexual reproductive structures (in living world) is zoospores which are usually microscopic and non-motile.

answered Apr 4, 2014 by pady_1

1 answer

Choose the odd one out : (on the basis of oestrous and menstrual cycle)

asked Apr 4, 2014 by pady_1

1 answer

Parthenogenesis occurs in all except :

answered Apr 4, 2014 by pady_1

1 answer

Regarding asexual reproductive structures : Match the following & choose the most appropriate option:

answered Apr 4, 2014 by pady_1

1 answer

Asexual reproduction : 1. Cell division is itself a mode of reproduction in Protists and Monerans. 2. Many single-celled organisms reproduce by binary fission, where a cell divides into two halves and each rapidly grows into an adult (e.g., Amoeba, Paramecium). 3. In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which, eventually gets separated and mature into new yeast organisms. Regarding 1, 2 and 3 :

asked Apr 4, 2014 by pady_1

1 answer

The gynoecium may consist of a single pistil or may have more than one pistil . When there are more than one, the pistils may be fused together or may be free ___ . Identify A and B:

answered Apr 4, 2014 by pady_1

1 answer

Choose the odd one out : (on the basis of number of ovules)

answered Apr 4, 2014 by pady_1

1 answer

Choose the appropriate option and fill in the blank : A typical angiosperm embryo sac, at maturity, is _________________________ .

answered Apr 4, 2014 by pady_1

1 answer

Artificial hybridisation : 1. Removal of anthers from the flower bud before the anthers dehisces using a pair of forceps is emasculation. 2. Emasculated flowers are covered with a bag of suitable size, generally made up of butter paper; and the process is called bagging.

answered Apr 4, 2014 by pady_1

1 answer

Apomixis is

answered Apr 4, 2014 by pady_1

1 answer

Fruits: 1. There are a few species in which fruits develop without fertilisation. 2. Fruits developing without fertilisation are called parthenocarpic fruits. 3. Parthenocarpy can be induced through application of growth hormones 4. Parthenocarpic fruits are usually seeded. Regarding 1, 2, 3 and 4 :

answered Apr 4, 2014 by pady_1

1 answer

The testes in humans are situated outside the abdominal cavity inside a pouch called *******. The purpose served is for

answered Apr 4, 2014 by pady_1

1 answer

Which of the following is a mode of reproduction in animals in which embryos develop inside eggs that are retained within the mother's body until they are ready to hatch?

answered Apr 4, 2014 by pady_1

1 answer

Bartholin glands or greater vestibular glands in adult females is homologous to what in adult males?

asked Apr 4, 2014 by pady_1

1 answer

The primitive gut that forms during which stage in the developing embryo is known as the archenteron?

answered Apr 4, 2014 by pady_1

1 answer

Where in the human body are the Sertoli cells located?

asked Apr 4, 2014 by pady_1

1 answer

Which one of the following statements about human sperm is correct?

answered Apr 4, 2014 by pady_1

1 answer

Where are the Bartholin's glands situated ?

asked Apr 4, 2014 by pady_1

1 answer

Which of the following hormones is not a secretion product of human placenta ?

answered Apr 4, 2014 by pady_1

1 answer

Ovulation in the human female normally takes place midway during the menstrual cycle in which of the following phases?

answered Apr 4, 2014 by pady_1

1 answer

LACTATION : 1. The mammary glands of the female undergo differentiation during pregnancy and starts producing milk towards the end of pregnancy by the process called lactation. 2. The milk produced during the initial few days of lactation is called colostrum which should be discarded. Regarding 1 and 2 :

answered Apr 3, 2014 by pady_1

1 answer

Regarding inner cell mass - choose the correct option :

answered Apr 3, 2014 by pady_1

1 answer

Regarding hormonal changes essential for supporting the fetal growth, metabolic changes in the mother and maintenance of pregnancy - choose the incorrect option :

answered Apr 3, 2014 by pady_1

1 answer

1. After implantation, finger-like projections appear on the trophoblast called chorionic villi which are surrounded by the uterine tissue and maternal blood. 2. The chorionic villi and uterine tissue become interdigitated with each other and jointly form a structural and functional unit between developing embryo (foetus) and maternal body called placenta. Regarding 1 and 2 :

answered Apr 3, 2014 by pady_1

1 answer

Choose the incorrect statement:

answered Apr 3, 2014 by pady_1

1 answer

Assertion (A): Only one sperm can fertilise an ovum. Reason (R): During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms. Regarding (A) and (R):

answered Apr 3, 2014 by pady_1

1 answer

1. The process of fusion of a sperm with an ovum is called fertilisation. 2. During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane. Regarding 1 and 2 :

answered Apr 3, 2014 by pady_1

1 answer

Assertion (A): All copulations lead to fertilisation and pregnancy. Reason (R): Fertilisation can occur if the ovum and sperms are transported simultaneously to the ampullary-isthmic junction. Regarding (A) and (R):

answered Apr 3, 2014 by pady_1

1 answer

Assertion (A): In the absence of fertilisation menstruation occurs. Reason (R): The corpus luteum degenerates. This causes disintegration of the endometrium leading to menstruation. Regarding (A) and (R):

answered Apr 3, 2014 by pady_1

1 answer

1. During pregnancy some events of the menstrual cycle continue to occur. 2. But there is no menstruation. Regarding 1 and 2 :

answered Apr 3, 2014 by pady_1

1 answer

Assertion (A): Ovulation occurs during early menstrual cycle. Reason (R): Rapid secretion of LH leading to its maximum level called LH surge induces rupture of Graafian follicle and thereby the release of ovum. Regarding (A) and (R):

answered Apr 3, 2014 by pady_1

1 answer

In the middle of the menstrual cycle :

answered Apr 3, 2014 by pady_1

1 answer

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