31. The curved turbinates, present on the sides of the nose is called __
[A] Sinuses
[B] Septum
[C] Cartilage
[D] Turbinates
Show Answer
Correct Answer: D [Turbinates]
Notes:
Turbinates are curved turbinates on each side of the nose, and the bony ridges are lined with mucous membranes.
32. Which of the following is included in the axial skeleton?
[A] Skull
[B] Vertebral Column
[C] Ribs and Sternum
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Skeletal elements that are present along the longitudinal axis of the body. The axial skeleton consists of 80 bones, including the skull, vertebral column, ribs, and sternum.
33. Granulocytes and agranulocytes are a classification of which of the following?
[A] White blood cells
[B] Red blood cells
[C] Platelets
[D] Homeostasis
Show Answer
Correct Answer: A [White blood cells]
Notes:
Granulocytes and agranulocytes are a classification of White blood cells. Granulocytes are leukocytes, with the presence of granules in their cytoplasm while Agranulocytes are leukocytes, with the absence of granules in their cytoplasm.
34. Through which place do microorganisms enter our body?
[A] Respiratory tract
[B] Urogenital tract
[C] Gastrointestinal tract
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Microorganisms enter our body from various places:
1. the respiratory system
2. urogenital tract
3. gastrointestinal tract
4. skin surface
35. The part of brain which controls emotional reactions in our body is ____:
[A] Hypothalamus
[B] Meninges
[C] Cerebrum
[D] Thalamus
Show Answer
Correct Answer: A [Hypothalamus]
Notes:
The brain’s limbic system controls emotional expression through the hypothalamus, which has control over the body’s emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
36. Which one of the following is commonly known as Pond Silk?
[A] Yeast
[B] Rhizopus
[C] Ulothrix
[D] Spirogyra
Show Answer
Correct Answer: D [Spirogyra]
Notes:
Pond silk is the common name of Spirogyra (algae) because it is very slimy in shape. It is also known as pond silk, water silk, pond scum or mermaid’s trees because of its bright green silky appearance. Its filaments shine like silk due to the presence of mucilage and spiral shaped chloroplast.
37. When we touch leaves of “Touch me not plant”, they close, these movements are called ____:
[A] Seismonastic movements
[B] Photonastic movements
[C] Nyctinastic movements
[D] Chemonastic movements
Show Answer
Correct Answer: A [Seismonastic movements]
Notes:
These types of mechanism have been termed seismonastic movements. The movement occurs when specific regions of cells lose turgor pressure, which is the force that is applied onto the cell wall by water within the cell vacuoles and other cell contents.
38. Which of the following cell organelle contains DNA apart from nucleus?
[A] Golgi Apparatus
[B] Mitochondria
[C] Cytoplasm
[D] Ribosome
Show Answer
Correct Answer: B [Mitochondria]
Notes:
The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Mitochondria are unlike most organelles (with an exception of plant chloroplasts) in that they have their own set of DNA and genes that encode proteins. They are specialized structures unique to the cells of animals, plants and fungi.
39. Animals with Chitinous exoskeleton are ____:
[A] Sea-Urchin
[B] Insects
[C] Sponges
[D] Snails
Show Answer
Correct Answer: B [Insects]
Notes:
Chitin is the main component of the cell walls of fungi, the exoskeletons of arthropods such as crustaceans (e.g., crabs, lobsters and shrimps) and insects, the radulas of molluscs, and the beaks and internal shells of cephalopods, including squid and octopuses. Combined with calcium carbonate, as in the shells of Crustacean and molluscs, chitin produces a much stronger composite for protection.
40. Which cell disorder in our body is responsible for colour blindness?
[A] Cone cell
[B] Red Cell
[C] Neuron
[D] WBC
Show Answer
Correct Answer: A [Cone cell]
Notes:
Colour blindness is a sex-linked recessive disorder that causes failure in a person to differentiate and distinguish different colours such as red and green. Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cells are one of three types of photoreceptor cells in the retina of the human eye that are responsible for colour vision and function best in relatively bright light. Colour blindness can occur when one or more of the colour cone cells are absent, nonfunctioning, or detect a different colour than normal.