Structural organisation in animals practice · Medium

A: Thigh muscles can get tired but not the muscles of ventricle of heart.

R: Muscles of thigh are voluntary whereas that of heart are involuntary muscles.

Select the correct statement w.r.t. Periplaneta americana.

Consider the following 4 statements (i) – (iv) and select the correct option stating which ones are true and which ones are false.

i. Ligaments are rich in protein elastin.

ii. Tendons are a type of dense regular fibrous tissues.

iii. Oesophagus have keratinized squamous epithelium.

iv. Most abundant protein found in human body is collagen.

Urinary bladder is….. in frogs

Consider the following statements about the connective tissue
I. Their special function is linking and supporting the other organs tissue of the body
II. It is the most abundant type of animal tissue
III. Blood is a specialised connective tissue which contains collagen
IV. The cells of connective tissue secretes mucous
Which of the statement given above are incorrect?

Study the following statements.

a. Desmosomes are present in cardiac muscles but absent in epithelial tissues

b. Bronchioles are lined by ciliated columnar epithelium

c. Ligaments are made of dense regular connective tissue but without collagen fibres

d. Pancreatic duct is lined by compound cuboidal epithelium

Which of the above are correct?

Statement I: Glandular epithelium composed of columnar or cuboidal cells that are specialized for secretion.

Statement II: Compound epithelium has limited role in secretion and absorption.

Read the statements and give answer.

Statement I: Tendon is classified as dense regular connective tissue.

Statement II: Fibroblast cells are present between many parallel bundles of collagen fibres.

Choose the incorrect statement about skeletal muscles
I. Tissues are closely attached to bones
II. A sheath of tough connective tissue encloses several bundles of muscles fibres
III. These are involuntary in their action
IV. These are present in the blood vessels

Which of the following statements are incorrect in reference to the blood vascular system of the earthworm?
I. Blood vascular system is of open type
II. Smaller blood vessels supply the gut, nerve cord and the body wall
III. Blood glands are present on 6th 7th and 8th segment
IV. Blood cells are phagocytotic in nature

Consider the following statements I. Cells are compactly packed in the epithelial tissues with little intercellular matrix II. The cells secretes fibres of structural protein in all the connective tissues expect blood III. Neuroglea is made up of more than one half the volume of neural tissue in our body IV. Muscles are made up of fibres Which of the above given is/are true?

Read the following statement. Which amongst them are
correct?

I. The most abundant cells of areolar connective tissue
produce its matrix. <br.
II. All solid connective tissues are vascular except bone.

III. The bone present in the epiphysis of long bones in
mammals has matrix arranged in concentric layers called
lamellae.

IV. Sterocilia is structurally more similar to microvilli than
kinocilia.

Select the incorrect match.

Bidder’s canal is found in

Bone marrow of long bones are the sites of

Assertion : Cartilage (protein matrix) and bone
(calcium matrix) are rigid connective tissue.

Reason : Blood is connective tissue in which
plasma is the matrix.

In the digestive system of cockroach gastric caecae is present at the junction of

Given below the functions of different parts of the alimentary canal of cockroach. Correlate these functions with their respective organs
I. Grinding of food particles
II. Secretion of digestive juices
III. Clearing of haemolymph
The correct set of organs is

Consider the following statements in accordance to the excretory system of the earthworm I. Nephridia is segmentally arranged coiled tubule II. Nephridia regulates the volume and composition of the body fluids III. There are three type of nephridia found in the earthworm IV. Pharyngeal nephridia is present as three paired tufts in the 4th, 5th and 6th segment Which of the above statement is/are correct?

Epithelial cells of the intestine involved in food absorption have on their outer surface

Which cells do not form layer and remain structurally separate?

Which one of the following is the most abundant protein in the animals ?

Read the given statements about blood vascular system of cockroach
I. Circulatory system of cockroach is of closed type
II. It contains no blood vessels except aorta heart
III. Heart is 6 chambered
IV. The haemolymph is composed of colourless plasma and haemocytes
Which of the statements given above is/are incorrect

Which of the cells are least likely to be replaced by new cells?

Which one of the following is correctly matched regarding earthworm?

Which of the following structures in the neural tissue carrying impulse?

Common feature in both dense irregular and regular connective tissue is

In which type of tissue, nucleus is placed towards periphery of the cell due to storage of reserve food?

Which of the following component is not present in fluid connective tissue?

Which of the following statement is/are correct in relation with epithelial tissue?

I. It helps in protection and storage

II. It helps in excretion and reproduction

III. It helps in absorption and secretion

IV. It helps in locomotion