Practice Physiology question set 4 - general science mcq Online Quiz (set-1) For All Competitive Exams

Q-1)   Which element is required in comparatively least quantity for the growth of plant?

(a)

(b)

(c)

(d)

Q-2)   Total number of ATP consume during Kreb’s cycle is

(a)

(b)

(c)

(d)

Q-3)   Which one of the following organs in the human body is most affected due to shortage of oxygen?

(a)

(b)

(c)

(d)

Explanation:

Brain is the most vital organ. It stops functioning in the absence of O2 .

Q-4)   Consider the following statements :
  1. Aerenchyma tissue are found in hydrophytes.
  2. Number of stomata is less and sunken in xerophyte.
  3. Velamen tissue in orchids are found in root.
Which of the statement(s) given above is/are correct?

(a)

(b)

(c)

(d)

Explanation:

Hydrophyts contain aerenchyma that helps them stay afloat on water, xerophytes contain less and sunken stomata to prevent excessive water loss due to transpiration at high temperature, velamen tissues in orchids are found in roots for efficient uptake of water and minerals

Q-5)   In expiration, diaphragm becomes

(a)

(b)

(c)

(d)

Q-6)   Consider the following statements:
  1. Chlorella is component of sewage oxidation tank.
  2. Chlorella produces food rich in vitamins, proteins, etc.
  3. Chlorella uses prolonged space flight for food O2 disposed of CO2 .
  4. Chlorella yields antibiotic chlorellin.
Which of the statements given above are correct about Chlorella?

(a)

(b)

(c)

(d)

Q-7)   Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

(a)

(b)

(c)

(d)

Q-8)   Which of the following commonly called emergency gland of body?

(a)

(b)

(c)

(d)

Explanation:

Adrenal or suprarenal glands are called the emergency glands of the body. The medullary portion of these glands secretes hormones adrenaline and noradrenaline. Their secretion is stimulated by the sympathetic nervous system.

These hormones are secreted in emergency conditions like anger, injury, cold, emotional stress, fear etc, hence also called hormones for fight or flight.

Q-9)   Which of the following statements are wrong?
  1. Leucocytes disintegrate in the spleen and liver.
  2. RBC, WBC and blood platelets are produced in bone marrow.
  3. Neutrophils bring about destruction and detoxification of toxins of protein origin.
  4. The important function of lymphocytes is to produce antibodies.

(a)

(b)

(c)

(d)

Explanation:

Leucocytes are removed from the circulation by macrophages located in the liver and spleen.

They may die and disintegrate in the connective tissue with remnants being phagocytized by histiocytes. Neutrophils are phagocytic cells which destroy foreign organisms entering the body.

Q-10)   Match List-I with List-II and select the correct answer using the code given below the lists.
List-I (Biological Institutes) List-II (Places)
A. National Botanical 1. Shimla (H.P.) Research Institute (NBRI)
B. Central Potato 2. Lucknow (U.P.) Research Institute (CPRI)
C. Central Rice Research 3. Cuttack (Odhisha) Institute (CRRI)
D. Central Forest Research 4. Dehradun (Uttarakhand) Institute (CFRI)
Select the correct answer using the codes given below the lists: A B C D

(a)

(b)

(c)

(d)

Explanation: