Each artery and vein consists of three layers: an inner lining of ______(i)________ endothelium, the tunica intima, a middle layer of __________(ii)__________ and _________(iii)_______ fibres, the tunica madia, and an external layer of _________(iv)__________ tissue with __________(v)__________ fibres, the tunica externa.

Fill the blanks in the given statements and select the correct option A. The developmetnal stage of an animal passed in the mother's womb is called (i).____ (ii). The outer layer of blastula is called (ii). _____. It does nt take part in the formation of (iii). ______ C. (iv)._____ is the first germ layer formed from the inner cell mass by differentiation.

Fill the blanks in the given statements and select the correct option A. The developmetnal stage of an animal passed in the mother's womb is called (i).____ (ii). The outer layer of blastula is called (ii). _____. It does nt take part in the formation of (iii). ______ C. (iv)._____ is the first germ layer formed from the inner cell mass by differentiation.

Which of the following statements is/are not correct regarding connective tissues ? (i) They are most abundant and widely distributed in the body of complex animals (ii) They connect and support other tissues (iii) They include diverse tissues such as bones, cartilage, tendons, adipose and other loose connective tissues. (iv) They form the internal and external lining of many organs (v) In all connective tissues except blood, the cells secrete fibres of structural proteins like collagen and elastin.

Which of the following statements is/are not correct regarding connective tissues ? (i) They are most abundant and widely distributed in the body of complex animals (ii) They connect and support other tissues (iii) They include diverse tissues such as bones, cartilage, tendons, adipose and other loose connective tissues. (iv) They form the internal and external lining of many organs (v) In all connective tissues except blood, the cells secrete fibres of structural proteins like collagen and elastin.

Two conducting layers of length L each specific resistivites rho_(1) and rho_(2) and cross-sectional areas A_(1) and A_(2) respectively are connected to a voltage source V such that current flow lines do not cross from one layer to the other. (i). Find the total current in the system and describe how it is divided between the 2 layers (ii). Find the total current when a third layer of cross-sectional area A_(1)+A_(2) , length L and specific resistivity rho_(3) is attached at one of the ends of the given system.

During gastrulation, the embryo develops three germ layers (endoderm, mesoderm, and ectoderm) The structures derived from ectoderm are (i) pituitary gland (ii) cornea (iii) kidneys (iv) notochord

Note the relationship between the first two words and suggest a suitable word for the fourth place : (i) Distributing vessels : arteries : collecting vessels ___ (ii) Contraction of heart : systole : relaxation of heart ____ (iii) Pulmonary artery : deoxygenated blood : pulmonary vein ____ (iv) Red fluid tissue : blood : colourless fluid tissue_____ (v) Hepatic portal system : liver : renal portal system ____

A student was given a sample of tissue. He observes and concludes the following characters. (i) The following The cells are composed of a single layer of tall and slender cells. (ii) Their nuclei are located at the base. (iii) Free surface may have microvilli . (iv) It is found in the lining of stomach and intestines (v) It help in secretion and absorption. Based on the above features identify the epithelium.

A student was given a sample of tissue. He observes and concludes the following characters. (i) The following The cells are composed of a single layer of tall and slender cells. (ii) Their nuclei are located at the base. (iii) Free surface may have microvilli . (iv) It is found in the lining of stomach and intestines (v) It help in secretion and absorption. Based on the above features identify the epithelium.

Select correct statements related to the human female reproductive system i. The wall of the uterus has three layers of tissue i.e., mesometrium, ii. The endometrium is the inner glandular layers that lines the uterine cavity. iii. Myometrium is the middle thick layer of smooth muscle which exhibits strong contraction during delivery of the baby. iv. The endometrium undergoes cyclical changes during the menstrual cycle. (a) i and iv (b) ii and iv (c) ii, iii and iv (d) i,ii,iii and iv