NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 37 of 112)
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- The deficiency of which one of the following hormones causes dwarfism and the excess of the same causes gigantism and acromegaly?
- Thyrotropin
- Somatotropin
- Parathormone
- Cortisone
- Which of the following soak most of the atmospheric CO2?
- Cultivated lands
- Bacteria
- Forests
- Oceans
- The phenomenon of ‘cyclomorphosis’ exhibited by certain members of Rotifera and Cladocera is caused by
- Variation in availability of food
- Prey avoidance mechanism
- Chemical induction and prey avoidance
- Chemical induction and change in the water temperature
- If a threshold stimulus is applied to a polarized membrane of a neuron, the
- Sodium-Potassium ATPase gets activated
- Sodium channels get opened
- Potassium channels get opened
- Both Sodium and Potassium channels get opened
- Consider the following statements regarding Na-K pump
- It utilizes ATP
- It acts on a resting neuron
- It involves efflux of 3 Na + per ATP
- It involves influx of 2K + per ATP
- Metabolic poisons stop the pump
- Which of the statements given above are correct?
- 1 and 2
- 1,2 and 5
- 3,4 and 5
- 1,2, 3,4 and 5
- Consider the following statements: For osmoregulation in aquatic medium
- A freshwater fish has to drink water continuously
- A marine bony fish has to drink water continuously
- A freshwater fish produces copious urine, which is hypsometric o blood
- A marine fish produces scanty urine, which is hyper osmotic to blood
- Which of the statements given above is⟋are correct?
- 1 only
- 4 only
- 1 and 4
- 2 and 3
- Match List I (Amino acids) with List II (Converted products due to oxidation) and select the correct answer
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 37 of 112) List-I List-II - Glycine
- Aspertate
- Proline
- Leucine
- a-Ketoglutarate
- Succinyl-CoA
- Pyruvate
- Acetyl-CoA
- Oxaloacetate
- A
- B
- C
- D
- 3
- 5
- 1
- 4
- 2
- 3
- 5
- 4
- 4
- 5
- 1
- 3
- 3
- 2
- 4
- 5
- Biological oxidation involves a sequential transfer of electrons from various dehydrogenate systems towards molecular oxygen. This is accomplished with the help of
- Cytochromes located in the inner mitochondrial membrane
- Flavoproteins located in the cytosol
- Cyanocobalamine located in the outer miltochondrial membrane
- Protoporphyrin IX located in the inner miltochondrial membrane
- The primary function of cortical reaction or egg activation during fertilization is to
- Secrete hyaluronidase enzyme
- Block the polyspermy
- Form the zygotic nucleus
- Change the pH of egg cytoplasm
- A major factor which is involved in the process of metamorphosis of amphibia is
- Thyroxin
- Follicle stimulating hormone
- Insulin
- Latinizing hormone
- When the tadpole larve of frog undergoes the process of metamorphosis then
- Fore limbs appear first
- Hind limbs appear first
- Reduction of tail takes place first
- Lungs appear first
- In Ascidians during retrogressive metamorphosis, the degenerating structure include
- Locomotory, Nervous and Notochord
- Digestive, Locomotory and Spinal cord
- Nervous, Digestive and Notochord
- Digestive and Spinal cord
- Rotational cleavage occurs in
- Insects
- Ascidians
- Mammals
- Amphibians
- In the chick blastoderm, the process of neural plate formation is initiated at
- Epiblast
- Area opaca
- Hypoblast
- Neural crest cells
- The mesoderm does not give rise to
- Muscular system
- Nervous system
- Circulatory system
- Gonads