EASY
Earn 100

What is elastic cartilage?

Important Questions on Structural Organisation in Animals

MEDIUM

Match the type of cells in Column I with the organs they are part of, listed in Column II:

  Column I   Column II
P. Chondroblast i. Bone
Q. Osteoclast ii. Brain
R. Microglia iii. Cartilage
S. Pneumocyte iv. Lung

Choose the CORRECT combination.

EASY
Microscopic examination of a blood smear reveals an abnormal increase in the number of granular cells with multiple nuclear lobes. Which one of the following cell types has increased in number?
MEDIUM

Study the following statements and identify the correct statements-
I) Microglial cells keep the cerebrospinal fluid in the ventricles of brain in constant circulation
II) Arrector pili muscles are unstriated muscles
III) Basophils remove antigen-antibody complexes from the blood
IV) Perichondrium is absent in fibrous cartilage

EASY
Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?

(i) They do not need to reproduce

(ii) They are somatic cells

(iii) They do not metabolize

(iv) All their internal space is available for oxygen transport
HARD
If a clean dry bone is kept in dil. HCl for about 3 days, then what happens?
EASY

Choose the correct answer from the options.

Elastin protein is produced from _____ tissue. (connective / muscular)

EASY
The decreasing percentage of proportions of leucocytes in human blood is:
MEDIUM
The major constituent of connective tissue is a fibrous protein named _____.
EASY

Choose the right option from the bracket.

White fibre is produced by _____ protein. (elastin / collagen)

EASY

Choose the correct answer from the option.

Osteocyte cell is found in _____ tissue. (muscular / osseous)

MEDIUM

Fill in the blank with the correct option given in the bracket.

The protein found in cartilage is _____. (ossein/chondrin)

EASY
Connective tissue is produced from the _____ cell layer of the embryo.
EASY

Choose the correct option from the bracket:

The smallest blood cell is _____. (erythrocytes / thrombocytes)