The structure which provides vascular connection

Correct Answer - Option 2 : Placenta The correct answer is Placenta. Explanation: • The placenta is a structure that connects or joins the developing fetus to the uterine wall to allow different physiological processes like nutrient uptake, waste elimination, and gaseous exchange via the mother’s blood supply i.e it provides a vascular connection between fetus & uterus. • The placenta helps to fight against internal infection and produce hormones to support pregnancy, • It is well developed in Eutheria. In marsupials, the embryo develops incompletely in the uterus. • Based on the distribution of villi, the placenta can be divided into 7 major types • Diffused type placenta • Cotyledonary placenta • Intermediate type placenta • Zonary placenta • Cotyledonary placenta • Discoidal placenta • Metadiscoidal placenta • Corpus luteum: It is a structure formed from the Graffian follicle. After Ovulation, the ruptured Graffian follicle gets transformed into the Corpus luteum. • Leydig cells: The cell that secretes androgen hormones in the human being is the Cells of Leydig. Cells of Leydig are found in testicles (male reproductive organ). • Fimbriae: The infundibulum has several finger-like projections called fimbriae, they move closer to the ovaries during ovulation to collect the released ovum.

Q. Fill in the blanks: (a) Humans reproduce _____________ (asexually/sexually) (b) Humans are _____________ (oviparous, viviparous, ovoviviparous) (c) Fertilisation is _____________ in humans (external/internal) (d) Male and female gametes are _____________ (diploid/haploid) (e) Zygote is _____________ (diploid/haploid) (f) The process of release of ovum from a mature follicle is called _____________ (g) Ovulation is induced by a hormone called _____________ (h) The fusion of male and female gametes is called _____________ (i) Fertilisation takes place in _____________ (j) Zygote divides to form _____________which is implanted in uterus. (k) The structure which provides vascular connection between foetus and uterus is called _____________ Q. (a) Humans reproduce ....... (asexually / sexually) (b) Humans are ......... (oviparous /vivaparous/ovoviviparous) (c) Fertilisation is ..... in humans (external / internal) (d) Male and female gametes are ...... (diploid / haploid) (e) Zygote is ..... (diploid/ haploid ) (f) The process of release of ovum from a mature follicle is called........... (g) Ovulation is induced by a hormone called ...... (h) The fusion of male and female gametes is called ...... (i) Fertilisation takes place in ..... (j) Zygote divides to form........ which is implated in uterus. (k) The structure which provides vascular connection between foetus and uterus is called. Q. Fill in the blanks: (a) Humans reproduce __________. (asexually/sexually) (b) Humans a...

The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over. Your circulatory system is critical to healthy organs, muscles and tissues. Overview What is the circulatory system? Your heart and blood vessels make up the circulatory system. The main function of the circulatory system is to provide oxygen, nutrients and hormones to muscles, tissues and organs throughout your body. Another part of the circulatory system is to remove waste from cells and organs so your body can dispose of it. Your The circulatory system provides blood to all the body's tissues so they can function. Function What does the circulatory system do? The circulatory system’s function is to move blood throughout the body. This blood circulation keeps organs, muscles and tissues healthy and working to keep you alive. The circulatory system also helps your body get rid of waste products. This waste includes: • Carbon dioxide from respiration (breathing). • Other chemical byproducts from your organs. • Waste from things you eat and drink. How does the circulatory system work? Your circulatory system functions with the help of blood vessels that include arteries, veins and capillaries. These • The heart’s bottom right pumping chamber (right ventricle) sends blood that’s low in oxygen (oxygen-poor b...

The correct answer is Placenta. Key Points Explanation: • The placentais a structure that connects or joins the developing fetus to the uterine wall to allow different physiological processes like nutrient uptake, waste elimination, and gaseous exchange via the mother’s blood supply i.e itprovides a vascular connection between fetus & uterus. • The placenta helps to fight against internal infection and produce hormones to support pregnancy, • It is well developed in Eutheria. In marsupials,the embryo develops incompletely in the uterus. • Based on the distribution of villi, the placenta can be divided into 7 major types • Diffused type placenta • Cotyledonary placenta • Intermediate type placenta • Zonary placenta • Cotyledonary placenta • Discoidal placenta • Metadiscoidal placenta Additional Information • Corpus luteum:It is a structure formed from the Graffian follicle.After Ovulation, the ruptured Graffian folliclegets transformed into the Corpus luteum. • Leydig cells:The cell that secretes androgen hormones in the human being is the Cells of Leydig. Cells of Leydigare found intesticles(male reproductive organ). • Fimbriae:The infundibulum has several finger-like projections called fimbriae, they move closer to the ovaries during ovulation to collect the released ovum.

The correct answer is Placenta. Key Points Explanation: • The placentais a structure that connects or joins the developing fetus to the uterine wall to allow different physiological processes like nutrient uptake, waste elimination, and gaseous exchange via the mother’s blood supply i.e itprovides a vascular connection between fetus & uterus. • The placenta helps to fight against internal infection and produce hormones to support pregnancy, • It is well developed in Eutheria. In marsupials,the embryo develops incompletely in the uterus. • Based on the distribution of villi, the placenta can be divided into 7 major types • Diffused type placenta • Cotyledonary placenta • Intermediate type placenta • Zonary placenta • Cotyledonary placenta • Discoidal placenta • Metadiscoidal placenta Additional Information • Corpus luteum:It is a structure formed from the Graffian follicle.After Ovulation, the ruptured Graffian folliclegets transformed into the Corpus luteum. • Leydig cells:The cell that secretes androgen hormones in the human being is the Cells of Leydig. Cells of Leydigare found intesticles(male reproductive organ). • Fimbriae:The infundibulum has several finger-like projections called fimbriae, they move closer to the ovaries during ovulation to collect the released ovum.

Q. Fill in the blanks: (a) Humans reproduce _____________ (asexually/sexually) (b) Humans are _____________ (oviparous, viviparous, ovoviviparous) (c) Fertilisation is _____________ in humans (external/internal) (d) Male and female gametes are _____________ (diploid/haploid) (e) Zygote is _____________ (diploid/haploid) (f) The process of release of ovum from a mature follicle is called _____________ (g) Ovulation is induced by a hormone called _____________ (h) The fusion of male and female gametes is called _____________ (i) Fertilisation takes place in _____________ (j) Zygote divides to form _____________which is implanted in uterus. (k) The structure which provides vascular connection between foetus and uterus is called _____________ Q. (a) Humans reproduce ....... (asexually / sexually) (b) Humans are ......... (oviparous /vivaparous/ovoviviparous) (c) Fertilisation is ..... in humans (external / internal) (d) Male and female gametes are ...... (diploid / haploid) (e) Zygote is ..... (diploid/ haploid ) (f) The process of release of ovum from a mature follicle is called........... (g) Ovulation is induced by a hormone called ...... (h) The fusion of male and female gametes is called ...... (i) Fertilisation takes place in ..... (j) Zygote divides to form........ which is implated in uterus. (k) The structure which provides vascular connection between foetus and uterus is called. Q. Fill in the blanks: (a) Humans reproduce __________. (asexually/sexually) (b) Humans a...

Correct Answer - Option 2 : Placenta The correct answer is Placenta. Explanation: • The placenta is a structure that connects or joins the developing fetus to the uterine wall to allow different physiological processes like nutrient uptake, waste elimination, and gaseous exchange via the mother’s blood supply i.e it provides a vascular connection between fetus & uterus. • The placenta helps to fight against internal infection and produce hormones to support pregnancy, • It is well developed in Eutheria. In marsupials, the embryo develops incompletely in the uterus. • Based on the distribution of villi, the placenta can be divided into 7 major types • Diffused type placenta • Cotyledonary placenta • Intermediate type placenta • Zonary placenta • Cotyledonary placenta • Discoidal placenta • Metadiscoidal placenta • Corpus luteum: It is a structure formed from the Graffian follicle. After Ovulation, the ruptured Graffian follicle gets transformed into the Corpus luteum. • Leydig cells: The cell that secretes androgen hormones in the human being is the Cells of Leydig. Cells of Leydig are found in testicles (male reproductive organ). • Fimbriae: The infundibulum has several finger-like projections called fimbriae, they move closer to the ovaries during ovulation to collect the released ovum.

The circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. The heart then sends oxygenated blood through arteries to the rest of the body. The veins carry oxygen-poor blood back to the heart to start the circulation process over. Your circulatory system is critical to healthy organs, muscles and tissues. Overview What is the circulatory system? Your heart and blood vessels make up the circulatory system. The main function of the circulatory system is to provide oxygen, nutrients and hormones to muscles, tissues and organs throughout your body. Another part of the circulatory system is to remove waste from cells and organs so your body can dispose of it. Your The circulatory system provides blood to all the body's tissues so they can function. Function What does the circulatory system do? The circulatory system’s function is to move blood throughout the body. This blood circulation keeps organs, muscles and tissues healthy and working to keep you alive. The circulatory system also helps your body get rid of waste products. This waste includes: • Carbon dioxide from respiration (breathing). • Other chemical byproducts from your organs. • Waste from things you eat and drink. How does the circulatory system work? Your circulatory system functions with the help of blood vessels that include arteries, veins and capillaries. These • The heart’s bottom right pumping chamber (right ventricle) sends blood that’s low in oxygen (oxygen-poor b...

Views: 5,865 6.6 Genetrc Cone puring replication and transcription a nucletc acld was copled to form inother nucletc acid. Hence. these processes are easy to conceptualise on the basis of complementarity. The process of translation requires a polymer of amino acids. Neither does a any complementarity exist between nucleotides and amino acids, nor could any be drawn theoretically. There existed ample evidences, though, to support the notion that change in nucleic acids (genetic material) were responsible for change in amino acids in proteins. This led to the proposition of a genetic code that could direct the sequence of amino acids during synthesis of proteins. If determining the biochemical nature of genetic material and the structure of DNA was very exciting, the proposition and deciphering of genetic code were most challenging. In a very true sense, it required involvement of scientists from several disciplines - physicists, organic chemists, biochemists and geneticists. It was George Gamow, a physicist. who argued that since there are only 4 bases and if they have to code for 20 amino acids, the code should constitute a combination of bases. He suggested that in order to code for all the 20 amino acids, the code should be made up of three nucleotides. This was a very bold proposition, because a permutation combination of 4 3 ( 4 × 4 × 4 ) would generate 64 codons; generating many more codons than required. Providing proof that the codon was a triplet, was a more daunti...

Q. Fill in the blanks: (a) Humans reproduce _____________ (asexually/sexually) (b) Humans are _____________ (oviparous, viviparous, ovoviviparous) (c) Fertilisation is _____________ in humans (external/internal) (d) Male and female gametes are _____________ (diploid/haploid) (e) Zygote is _____________ (diploid/haploid) (f) The process of release of ovum from a mature follicle is called _____________ (g) Ovulation is induced by a hormone called _____________ (h) The fusion of male and female gametes is called _____________ (i) Fertilisation takes place in _____________ (j) Zygote divides to form _____________which is implanted in uterus. (k) The structure which provides vascular connection between foetus and uterus is called _____________ Q. (a) Humans reproduce ....... (asexually / sexually) (b) Humans are ......... (oviparous /vivaparous/ovoviviparous) (c) Fertilisation is ..... in humans (external / internal) (d) Male and female gametes are ...... (diploid / haploid) (e) Zygote is ..... (diploid/ haploid ) (f) The process of release of ovum from a mature follicle is called........... (g) Ovulation is induced by a hormone called ...... (h) The fusion of male and female gametes is called ...... (i) Fertilisation takes place in ..... (j) Zygote divides to form........ which is implated in uterus. (k) The structure which provides vascular connection between foetus and uterus is called. Q. Fill in the blanks: (a) Humans reproduce __________. (asexually/sexually) (b) Humans a...