Structural Organisation in Animals - Online Test
Q1. Largest single mass of lymphatic tissue in the body is
Answer : Option D
Explaination / Solution:
Spleen is the largest single mass of lymphatic tissue in body. Blood formation in foetus and newly born child takes place in spleen.
Q2. Both WBC and RBC are formed in the
Answer : Option C
Explaination / Solution:
In adults, both WBC and RBC are formed in the bone marrow that is located in long bones such as thighs.
Q3. Mature erythrocytes cannot utilise glucose because they lack
Answer : Option D
Explaination / Solution:
Mature erythrocytes or red blood corpuscles cannot utilize glucose because these cells lack mitochondria as well as nucleus. Though glycolysis or glucose breakdown occurs in the cytoplasm, the final breakdown of pyruvate takes place inside mitochondria. Also the electron transport chain is located inside mitochondria. Hence presence of mitochondria is essential for a cell to utilize glucose and release energy.
Q4. The matrix of bone and cartilage can be distinguished by the presence of
Answer : Option D
Explaination / Solution:
The matrix of bone and cartilage differ by the presence of haversian canal that makes bone hard and stiff. On the other hand, cartilage are flexible.
Q5. The ciliated columnar epithelium cells in human are known to occurs in
Answer : Option B
Explaination / Solution:
Ciliated columnar epithelium cells in human occur in bronchioles and fallopian tube. They contain small hair like cilia on free surface. This helps to move egg in to fallopian tube. In bronchioles it helps to move mucus or dust particles.
Q6. The mouth part of cockroach which is compared to tongue is
Answer : Option A
Explaination / Solution:
A median flexible lobe called as hypopharynx act as tongue. It lies within the cavity enclosed by the mouth parts.
Q7. How many times do nymphs moult to reach the adult form of cockroach?
Answer : Option D
Explaination / Solution:
When the ootheca hatches, tiny nymph come out. It grows by undergoing moulting about 13 times to reach the adult form.
Q8. Blood consists of
Answer : Option B
Explaination / Solution:
Blood is a fluid connective tissue containing plasma. It contains red blood cells (RBC), white blood cells (WBC) and platelets suspended in the plasma.
Q9. In frog, during aestivation and hibernation gaseous exchange takes place through
Answer : Option C
Explaination / Solution:
As the frog becomes inactive during aestivation and hibernation, gaseous exchange does not take place through lungs. It takes place through skin.
Q10. The lymph in frog lacks
Answer : Option B
Explaination / Solution:
The lymph is different from blood. It is known as tissue fluid. Lymph is yellowish in colour as it lacks RBCs and few proteins.
