class 9th please give me answer fast
Answers
1. a epithelial tissue
b glandular epithelial tissue
c muscle tissues e.g areolar tissue
d nerve cells
2. a sperm ducts
b nose tip
c iris of the eye
3 a) cartilage is a connective tissue which has widely spaced out cells it is not very hard as bone and it is pretty elastic it is mainly found in in the the ending of the long bones and nose tip or the outer side of ear
b) bone is a very hard tissue whose matrix is very rich with magnesium calcium phosphate and carbonate the minerals are responsible for hardening of the bones the bone cells are also known as osteocytes the bones are filled with a fluid which is known as bone marrow which is responsible for the formation of blood.
c) striated muscles have light and dark coloured bands on them they are also known as involuntary muscles because they worked on the wish of of a person they are also responsible for the locomotion of the movement the contract and relax to produce the motion in the body these are mainly found in Limbs bodies face net upper part of oesophagus.
d) cardiac muscles are both smooth and straight cardiac muscles are composed of branch network they are light ball like structure around the heart they rapidly contract and relax throughout the lifetime without any stoppage the main function is to pump and distribute the blood to the various parts of the body.
4) 1. true
2. false
3. false
4.false
5. false
6. false
7. true