NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 8 of 112)
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- India is the lone producer of
- tussar silk
- muga silk
- eri silk
- mulberry silk
- The sting of honey bee is considered to be of therapeutic value in
- goitre and dermatitis
- bradycardiac encephalitis
- some forms of arthritis
- spondylitis deformans
- Which one of the following statements is correct? In pigeons
- both inspiration and expiration are caused by the movement of pectoral muscles during flight
- both inspiration and expiration are caused by the movement of pectoral muscles at the time of rest
- inspiration is caused by the movement of abdominal
- muscles and expiration by intercostal muscles at the time of rest inspiration is caused by the movement of intercostal muscles arid expiration by abdominal muscles during flight
- Assertion (A) : Mitosis increases the cell population and thus helps in the process of growth.
- Reason (R) : In certain organisms mitosis helps in reproduction.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In Echinodermata, the coelom is a multipurpose organ system.
- Reason (R) : The hydrocoel is capable of meeting the needs of respiration, nutrition, locomotion, sensory perception or a combination of these.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Sponges have an isolated phylogenetic position and are placed separately as parazoa.
- Reason (R) : Origin of sponges is uncertain and they differ from both protozoa and metazoa.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Sycon is capable of considerable regeneration, even from a single cell.
- Reason (R) : There is totipotency of cellular units in this animal.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Some of the sperms produced by the testes of Pila are incapable of fertilizing ova and are nonmotile.
- Reason (R) : Eupyrene types of sperms are non-energetic.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : The Kolliker՚s put in adult Amphioxus is a pocket of ciliated ectogerm cells and marks the position of neuropore.
- Reason (R) : The Kolliker՚s pit has no specialized sensory cells nor does it have any connection with brain.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Scoliodon is capable of maintaining orientation and equlibration with regard to gravity while swimming.
- Reason (R) : The neuromast organs of Scoliodon consist of lateral line receptors and pit organs.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Out of the two types of glucose phosphorylating enzymes, hexokinase is physiologically more important in controlling blood glucose level.
- Reason (R) : Glucokinase, the other phosphorylating enzyme, phosphorylates only D-glucose and has a much higher Km for D-glucose.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : The synthesis (anabolism) and degradation (catabolism) of protoplasm deals largely with protein metabolism.
- Reason (R) : Proteins generally form the major constituent of living matter.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In starvation and diabetes, the concentration of free fatty acids (FFA) in the blood increases.
- Reason (R) : The fatty acids circulate in blood in combination with plasma albumin.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In spite of sufficient insulin being secreted by the islets of Langerhans, diabetes mellitus may strike an individual.
- Reason (R) : The number of insulin receptors on the target cells decreases due to a negative feedback mechanism.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In metamorphosing tadpole of frog, the tail material is gradually accumulated in the body region and thus kelps in disappearance of the tail.
- Reason (R) : Lysosomes become highly active in the tail region of tadpole.
- Both A and Rare true and R is the correct explanation of A
- Both A and R are true but R is NOT the correct explanation of A
- A is true but R is false
- A is false but R is true